diff --git a/src/packagedcode/rubygems.py b/src/packagedcode/rubygems.py
index e80295c48af..e38c798646f 100644
--- a/src/packagedcode/rubygems.py
+++ b/src/packagedcode/rubygems.py
@@ -97,7 +97,7 @@ def parse(cls, location, package_only=False):
 
     @classmethod
     def assemble(cls, package_data, resource, codebase, package_adder):
-        yield from assemble_extracted_gem(cls, package_data, resource, codebase)
+        yield from assemble_extracted_gem(cls, package_data, resource, codebase, package_adder)
 
 
 class BaseGemProjectHandler(models.DatafileHandler):
diff --git a/tests/packagedcode/data/plugin/rubygems-package-expected.json b/tests/packagedcode/data/plugin/rubygems-package-expected.json
index d72c1b66d45..ee3cf4ac110 100644
--- a/tests/packagedcode/data/plugin/rubygems-package-expected.json
+++ b/tests/packagedcode/data/plugin/rubygems-package-expected.json
@@ -63,7 +63,7 @@
             {
               "license_expression": "mit",
               "license_expression_spdx": "MIT",
-              "from_file": "package/m2r-2.1.0.gem",
+              "from_file": "m2r-2.1.0.gem",
               "start_line": 1,
               "end_line": 1,
               "matcher": "1-spdx-id",
@@ -366,7 +366,7 @@
                 {
                   "license_expression": "mit",
                   "license_expression_spdx": "MIT",
-                  "from_file": "package/m2r-2.1.0.gem",
+                  "from_file": "m2r-2.1.0.gem",
                   "start_line": 1,
                   "end_line": 1,
                   "matcher": "1-spdx-id",
@@ -548,13 +548,6 @@
         "pkg:gem/m2r@2.1.0?uuid=fixed-uid-done-for-testing-5642512d1758"
       ],
       "scan_errors": []
-    },
-    {
-      "path": "m2r-2.1.0.gem.json",
-      "type": "file",
-      "package_data": [],
-      "for_packages": [],
-      "scan_errors": []
     }
   ]
 }
\ No newline at end of file
diff --git a/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract.json b/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract.json
new file mode 100644
index 00000000000..b3cc3148952
--- /dev/null
+++ b/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract.json
@@ -0,0 +1,451 @@
+{
+  "packages": [
+    {
+      "type": "gem",
+      "namespace": null,
+      "name": "json",
+      "version": "version",
+      "qualifiers": {},
+      "subpath": null,
+      "primary_language": "Ruby",
+      "description": "JSON Implementation for Ruby\nThis is a JSON implementation as a Ruby extension in C.",
+      "release_date": null,
+      "parties": [
+        {
+          "type": "person",
+          "role": "author",
+          "name": "Florian Frank",
+          "email": null,
+          "url": null
+        },
+        {
+          "type": "person",
+          "role": "author",
+          "name": null,
+          "email": "flori@ping.de",
+          "url": null
+        }
+      ],
+      "keywords": [],
+      "homepage_url": "https://github.com/ruby/json",
+      "download_url": "https://rubygems.org/downloads/json-version.gem",
+      "size": null,
+      "sha1": null,
+      "md5": null,
+      "sha256": null,
+      "sha512": null,
+      "bug_tracking_url": null,
+      "code_view_url": null,
+      "vcs_url": null,
+      "copyright": null,
+      "holder": null,
+      "declared_license_expression": null,
+      "declared_license_expression_spdx": null,
+      "license_detections": [],
+      "other_license_expression": null,
+      "other_license_expression_spdx": null,
+      "other_license_detections": [],
+      "extracted_license_statement": null,
+      "notice_text": null,
+      "source_packages": [],
+      "is_private": false,
+      "is_virtual": false,
+      "extra_data": {},
+      "repository_homepage_url": "https://rubygems.org/gems/json/versions/version",
+      "repository_download_url": "https://rubygems.org/downloads/json-version.gem",
+      "api_data_url": "https://rubygems.org/api/v2/rubygems/json/versions/version.json",
+      "package_uid": "pkg:gem/json@version?uuid=fixed-uid-done-for-testing-5642512d1758",
+      "datafile_paths": [
+        "json-3.0.2-java.gem-extract/data.tar.gz-extract/json.gemspec"
+      ],
+      "datasource_ids": [
+        "gemspec"
+      ],
+      "purl": "pkg:gem/json@version"
+    }
+  ],
+  "dependencies": [],
+  "files": [
+    {
+      "path": "json-3.0.2-java.gem-extract",
+      "type": "directory",
+      "package_data": [],
+      "for_packages": [],
+      "scan_errors": []
+    },
+    {
+      "path": "json-3.0.2-java.gem-extract/checksums.yaml.gz-extract",
+      "type": "directory",
+      "package_data": [],
+      "for_packages": [],
+      "scan_errors": []
+    },
+    {
+      "path": "json-3.0.2-java.gem-extract/checksums.yaml.gz-extract/checksums.yaml.gz-extract",
+      "type": "file",
+      "package_data": [],
+      "for_packages": [],
+      "scan_errors": []
+    },
+    {
+      "path": "json-3.0.2-java.gem-extract/data.tar.gz-extract",
+      "type": "directory",
+      "package_data": [],
+      "for_packages": [],
+      "scan_errors": []
+    },
+    {
+      "path": "json-3.0.2-java.gem-extract/data.tar.gz-extract/BSDL",
+      "type": "file",
+      "package_data": [],
+      "for_packages": [],
+      "scan_errors": []
+    },
+    {
+      "path": "json-3.0.2-java.gem-extract/data.tar.gz-extract/COPYING",
+      "type": "file",
+      "package_data": [],
+      "for_packages": [],
+      "scan_errors": []
+    },
+    {
+      "path": "json-3.0.2-java.gem-extract/data.tar.gz-extract/LEGAL",
+      "type": "file",
+      "package_data": [],
+      "for_packages": [],
+      "scan_errors": []
+    },
+    {
+      "path": "json-3.0.2-java.gem-extract/data.tar.gz-extract/README.md",
+      "type": "file",
+      "package_data": [],
+      "for_packages": [],
+      "scan_errors": []
+    },
+    {
+      "path": "json-3.0.2-java.gem-extract/data.tar.gz-extract/json.gemspec",
+      "type": "file",
+      "package_data": [
+        {
+          "type": "gem",
+          "namespace": null,
+          "name": "json",
+          "version": "version",
+          "qualifiers": {},
+          "subpath": null,
+          "primary_language": "Ruby",
+          "description": "JSON Implementation for Ruby\nThis is a JSON implementation as a Ruby extension in C.",
+          "release_date": null,
+          "parties": [
+            {
+              "type": "person",
+              "role": "author",
+              "name": "Florian Frank",
+              "email": null,
+              "url": null
+            },
+            {
+              "type": "person",
+              "role": "author",
+              "name": null,
+              "email": "flori@ping.de",
+              "url": null
+            }
+          ],
+          "keywords": [],
+          "homepage_url": "https://github.com/ruby/json",
+          "download_url": "https://rubygems.org/downloads/json-version.gem",
+          "size": null,
+          "sha1": null,
+          "md5": null,
+          "sha256": null,
+          "sha512": null,
+          "bug_tracking_url": null,
+          "code_view_url": null,
+          "vcs_url": null,
+          "copyright": null,
+          "holder": null,
+          "declared_license_expression": null,
+          "declared_license_expression_spdx": null,
+          "license_detections": [],
+          "other_license_expression": null,
+          "other_license_expression_spdx": null,
+          "other_license_detections": [],
+          "extracted_license_statement": null,
+          "notice_text": null,
+          "source_packages": [],
+          "file_references": [],
+          "is_private": false,
+          "is_virtual": false,
+          "extra_data": {},
+          "dependencies": [],
+          "repository_homepage_url": "https://rubygems.org/gems/json/versions/version",
+          "repository_download_url": "https://rubygems.org/downloads/json-version.gem",
+          "api_data_url": "https://rubygems.org/api/v2/rubygems/json/versions/version.json",
+          "datasource_id": "gemspec",
+          "purl": "pkg:gem/json@version"
+        }
+      ],
+      "for_packages": [
+        "pkg:gem/json@version?uuid=fixed-uid-done-for-testing-5642512d1758"
+      ],
+      "scan_errors": []
+    },
+    {
+      "path": "json-3.0.2-java.gem-extract/data.tar.gz-extract/lib",
+      "type": "directory",
+      "package_data": [],
+      "for_packages": [],
+      "scan_errors": []
+    },
+    {
+      "path": "json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json",
+      "type": "directory",
+      "package_data": [],
+      "for_packages": [],
+      "scan_errors": []
+    },
+    {
+      "path": "json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json.rb",
+      "type": "file",
+      "package_data": [],
+      "for_packages": [],
+      "scan_errors": []
+    },
+    {
+      "path": "json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/common.rb",
+      "type": "file",
+      "package_data": [],
+      "for_packages": [],
+      "scan_errors": []
+    },
+    {
+      "path": "json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/ext",
+      "type": "directory",
+      "package_data": [],
+      "for_packages": [],
+      "scan_errors": []
+    },
+    {
+      "path": "json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/ext.rb",
+      "type": "file",
+      "package_data": [],
+      "for_packages": [],
+      "scan_errors": []
+    },
+    {
+      "path": "json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/ext/generator",
+      "type": "directory",
+      "package_data": [],
+      "for_packages": [],
+      "scan_errors": []
+    },
+    {
+      "path": "json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/ext/generator.jar-extract",
+      "type": "directory",
+      "package_data": [],
+      "for_packages": [],
+      "scan_errors": []
+    },
+    {
+      "path": "json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/ext/generator.jar-extract/META-INF",
+      "type": "directory",
+      "package_data": [],
+      "for_packages": [],
+      "scan_errors": []
+    },
+    {
+      "path": "json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/ext/generator.jar-extract/META-INF/MANIFEST.MF",
+      "type": "file",
+      "package_data": [
+        {
+          "type": "jar",
+          "namespace": null,
+          "name": null,
+          "version": null,
+          "qualifiers": {},
+          "subpath": null,
+          "primary_language": null,
+          "description": "",
+          "release_date": null,
+          "parties": [],
+          "keywords": [],
+          "homepage_url": null,
+          "download_url": null,
+          "size": null,
+          "sha1": null,
+          "md5": null,
+          "sha256": null,
+          "sha512": null,
+          "bug_tracking_url": null,
+          "code_view_url": null,
+          "vcs_url": null,
+          "copyright": null,
+          "holder": null,
+          "declared_license_expression": null,
+          "declared_license_expression_spdx": null,
+          "license_detections": [],
+          "other_license_expression": null,
+          "other_license_expression_spdx": null,
+          "other_license_detections": [],
+          "extracted_license_statement": null,
+          "notice_text": null,
+          "source_packages": [],
+          "file_references": [],
+          "is_private": false,
+          "is_virtual": false,
+          "extra_data": {},
+          "dependencies": [],
+          "repository_homepage_url": null,
+          "repository_download_url": null,
+          "api_data_url": null,
+          "datasource_id": "java_jar_manifest",
+          "purl": null
+        }
+      ],
+      "for_packages": [],
+      "scan_errors": []
+    },
+    {
+      "path": "json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/ext/generator.jar-extract/json",
+      "type": "directory",
+      "package_data": [],
+      "for_packages": [],
+      "scan_errors": []
+    },
+    {
+      "path": "json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/ext/generator.jar-extract/json/ext",
+      "type": "directory",
+      "package_data": [],
+      "for_packages": [],
+      "scan_errors": []
+    },
+    {
+      "path": "json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/ext/generator.jar-extract/json/ext/Generator.class",
+      "type": "file",
+      "package_data": [],
+      "for_packages": [],
+      "scan_errors": []
+    },
+    {
+      "path": "json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/ext/generator/state.rb",
+      "type": "file",
+      "package_data": [],
+      "for_packages": [],
+      "scan_errors": []
+    },
+    {
+      "path": "json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/truffle_ruby",
+      "type": "directory",
+      "package_data": [],
+      "for_packages": [],
+      "scan_errors": []
+    },
+    {
+      "path": "json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/truffle_ruby/generator.rb",
+      "type": "file",
+      "package_data": [],
+      "for_packages": [],
+      "scan_errors": []
+    },
+    {
+      "path": "json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/version.rb",
+      "type": "file",
+      "package_data": [],
+      "for_packages": [],
+      "scan_errors": []
+    },
+    {
+      "path": "json-3.0.2-java.gem-extract/metadata.gz-extract",
+      "type": "directory",
+      "package_data": [],
+      "for_packages": [],
+      "scan_errors": []
+    },
+    {
+      "path": "json-3.0.2-java.gem-extract/metadata.gz-extract/metadata.gz-extract",
+      "type": "file",
+      "package_data": [
+        {
+          "type": "gem",
+          "namespace": null,
+          "name": "json",
+          "version": "3.0.2",
+          "qualifiers": {
+            "platform": "java"
+          },
+          "subpath": null,
+          "primary_language": "Ruby",
+          "description": "JSON Implementation for Ruby\nA JSON implementation as a JRuby extension.",
+          "release_date": "2026-09-09",
+          "parties": [
+            {
+              "type": null,
+              "role": "author",
+              "name": "Daniel Luz",
+              "email": null,
+              "url": null
+            }
+          ],
+          "keywords": [],
+          "homepage_url": "https://github.com/ruby/json",
+          "download_url": "https://rubygems.org/downloads/json-3.0.2-java.gem",
+          "size": null,
+          "sha1": null,
+          "md5": null,
+          "sha256": null,
+          "sha512": null,
+          "bug_tracking_url": null,
+          "code_view_url": "https://github.com/ruby/json",
+          "vcs_url": null,
+          "copyright": null,
+          "holder": null,
+          "declared_license_expression": "ruby",
+          "declared_license_expression_spdx": "Ruby",
+          "license_detections": [
+            {
+              "license_expression": "ruby",
+              "license_expression_spdx": "Ruby",
+              "matches": [
+                {
+                  "license_expression": "ruby",
+                  "license_expression_spdx": "Ruby",
+                  "from_file": "json-3.0.2-java.gem-extract/metadata.gz-extract/metadata.gz-extract",
+                  "start_line": 1,
+                  "end_line": 1,
+                  "matcher": "1-spdx-id",
+                  "score": 100.0,
+                  "matched_length": 1,
+                  "match_coverage": 100.0,
+                  "rule_relevance": 100,
+                  "rule_identifier": "spdx-license-identifier-ruby-a13349454c4e6b2b906b10512a1b09cdf0400d7d",
+                  "rule_url": null,
+                  "matched_text": "Ruby"
+                }
+              ],
+              "identifier": "ruby-69064f70-573f-8fda-e447-1666ddbf8fcf"
+            }
+          ],
+          "other_license_expression": null,
+          "other_license_expression_spdx": null,
+          "other_license_detections": [],
+          "extracted_license_statement": "- Ruby\n",
+          "notice_text": null,
+          "source_packages": [],
+          "file_references": [],
+          "is_private": false,
+          "is_virtual": false,
+          "extra_data": {},
+          "dependencies": [],
+          "repository_homepage_url": "https://rubygems.org/gems/json/versions/3.0.2",
+          "repository_download_url": "https://rubygems.org/downloads/json-3.0.2-java.gem",
+          "api_data_url": "https://rubygems.org/api/v2/rubygems/json/versions/3.0.2.json",
+          "datasource_id": "gem_archive_extracted",
+          "purl": "pkg:gem/json@3.0.2?platform=java"
+        }
+      ],
+      "for_packages": [],
+      "scan_errors": []
+    }
+  ]
+}
\ No newline at end of file
diff --git a/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/checksums.yaml.gz-extract/checksums.yaml.gz-extract b/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/checksums.yaml.gz-extract/checksums.yaml.gz-extract
new file mode 100644
index 00000000000..1e4f463f9da
--- /dev/null
+++ b/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/checksums.yaml.gz-extract/checksums.yaml.gz-extract
@@ -0,0 +1,7 @@
+---
+SHA256:
+  metadata.gz: 4be775fd0d4221af4703313be47b36df730b542f95063025472d82386bc6f949
+  data.tar.gz: aa1136bf72ebb55174ab30a3ddcaf908364a7e0cde743b952435a5ab59195d0a
+SHA512:
+  metadata.gz: 3b1da37df8ae7d0a8a40e41caed988f2b9f33c8ef147e66220e811adbc26199482189055badf0023bc5c4b8f201f2954a30cfa355cd7629604485c0424869f06
+  data.tar.gz: 7e50467d636c6a30b701d4778650355e6856660add1de37eef2519865977107e715cf19d3bcceff288ee068b5993908535243b6b799f7bc37bd7f41b8c270d37
diff --git a/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/BSDL b/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/BSDL
new file mode 100644
index 00000000000..66d93598aa3
--- /dev/null
+++ b/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/BSDL
@@ -0,0 +1,22 @@
+Copyright (C) 1993-2013 Yukihiro Matsumoto. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+1. Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGE.
diff --git a/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/COPYING b/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/COPYING
new file mode 100644
index 00000000000..426810a7fbb
--- /dev/null
+++ b/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/COPYING
@@ -0,0 +1,56 @@
+Ruby is copyrighted free software by Yukihiro Matsumoto <matz@netlab.jp>.
+You can redistribute it and/or modify it under either the terms of the
+2-clause BSDL (see the file BSDL), or the conditions below:
+
+  1. You may make and give away verbatim copies of the source form of the
+     software without restriction, provided that you duplicate all of the
+     original copyright notices and associated disclaimers.
+
+  2. You may modify your copy of the software in any way, provided that
+     you do at least ONE of the following:
+
+       a) place your modifications in the Public Domain or otherwise
+          make them Freely Available, such as by posting said
+	  modifications to Usenet or an equivalent medium, or by allowing
+	  the author to include your modifications in the software.
+
+       b) use the modified software only within your corporation or
+          organization.
+
+       c) give non-standard binaries non-standard names, with
+          instructions on where to get the original software distribution.
+
+       d) make other distribution arrangements with the author.
+
+  3. You may distribute the software in object code or binary form,
+     provided that you do at least ONE of the following:
+
+       a) distribute the binaries and library files of the software,
+	  together with instructions (in the manual page or equivalent)
+	  on where to get the original distribution.
+
+       b) accompany the distribution with the machine-readable source of
+	  the software.
+
+       c) give non-standard binaries non-standard names, with
+          instructions on where to get the original software distribution.
+
+       d) make other distribution arrangements with the author.
+
+  4. You may modify and include the part of the software into any other
+     software (possibly commercial).  But some files in the distribution
+     are not written by the author, so that they are not under these terms.
+
+     For the list of those files and their copying conditions, see the
+     file LEGAL.
+
+  5. The scripts and library files supplied as input to or produced as
+     output from the software do not automatically fall under the
+     copyright of the software, but belong to whomever generated them,
+     and may be sold commercially, and may be aggregated with this
+     software.
+
+  6. THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
+     IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+     WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+     PURPOSE.
diff --git a/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/LEGAL b/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/LEGAL
new file mode 100644
index 00000000000..3d3e0935aee
--- /dev/null
+++ b/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/LEGAL
@@ -0,0 +1,20 @@
+# -*- rdoc -*-
+
+= LEGAL NOTICE INFORMATION
+--------------------------
+
+All the files in this distribution are covered under either the Ruby's
+license (see the file COPYING) or public-domain except some files
+mentioned below.
+
+ext/json/ext/vendor/fpconv.h::
+  This file is adapted from https://github.com/night-shift/fpconv
+  It is licensed under Boost Software License 1.0.
+
+ext/json/ext/vendor/jeaiii-ltoa.h::
+  This file is adapted from https://github.com/jeaiii/itoa
+  It is licensed under the MIT License
+
+ext/json/ext/vendor/fast_float_parser.h::
+  This file is adapted from the Fast Float C++ library by The fast_float authors https://github.com/fastfloat/fast_float
+  It is licensed under the MIT License
diff --git a/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/README.md b/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/README.md
new file mode 100644
index 00000000000..0f39ee6c4c5
--- /dev/null
+++ b/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/README.md
@@ -0,0 +1,33 @@
+# JSON implementation for Ruby
+
+## Description
+
+This is an implementation of the JSON specification according to RFC 7159
+http://www.ietf.org/rfc/rfc7159.txt .
+
+The JSON generator generate UTF-8 character sequences by default.
+If an :ascii\_only option with a true value is given, they escape all
+non-ASCII and control characters with \uXXXX escape sequences, and support
+UTF-16 surrogate pairs in order to be able to generate the whole range of
+unicode code points.
+
+All strings, that are to be encoded as JSON strings, should be UTF-8 byte
+sequences on the Ruby side.
+
+## Author
+
+Florian Frank <mailto:flori@ping.de>
+
+## License
+
+Ruby License, see https://www.ruby-lang.org/en/about/license.txt.
+
+## Download
+
+The latest version of this library can be downloaded at
+
+* https://rubygems.org/gems/json
+
+Online Documentation should be located at
+
+* https://www.rubydoc.info/gems/json
diff --git a/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/json.gemspec b/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/json.gemspec
new file mode 100644
index 00000000000..55757310250
--- /dev/null
+++ b/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/json.gemspec
@@ -0,0 +1,62 @@
+# frozen_string_literal: true
+
+version = File.foreach(File.join(__dir__, "lib/json/version.rb")) do |line|
+  /^\s*VERSION\s*=\s*'(.*)'/ =~ line and break $1
+end rescue nil
+
+spec = Gem::Specification.new do |s|
+  java_ext = Gem::Platform === s.platform && s.platform =~ 'java' || RUBY_ENGINE == 'jruby'
+
+  s.name = "json"
+  s.version = version
+
+  s.summary = "JSON Implementation for Ruby"
+  s.homepage = "https://github.com/ruby/json"
+  s.metadata = {
+    'bug_tracker_uri'   => 'https://github.com/ruby/json/issues',
+    'changelog_uri'     => 'https://github.com/ruby/json/blob/master/CHANGES.md',
+    'documentation_uri' => 'https://docs.ruby-lang.org/en/master/JSON.html',
+    'homepage_uri'      => s.homepage,
+    'source_code_uri'   => 'https://github.com/ruby/json',
+  }
+
+  s.required_ruby_version = Gem::Requirement.new(">= 2.7")
+
+  if java_ext
+    s.description = "A JSON implementation as a JRuby extension."
+    s.author = "Daniel Luz"
+    s.email = "dev+ruby@mernen.com"
+  else
+    s.description = "This is a JSON implementation as a Ruby extension in C."
+    s.authors = ["Florian Frank"]
+    s.email = "flori@ping.de"
+  end
+
+  s.licenses = ["Ruby"]
+
+  s.extra_rdoc_files = ["README.md"]
+  s.rdoc_options = ["--title", "JSON implementation for Ruby", "--main", "README.md"]
+
+  s.files = [
+    "CHANGES.md",
+    "COPYING",
+    "BSDL",
+    "LEGAL",
+    "README.md",
+    "json.gemspec",
+  ] + Dir.glob("lib/**/*.rb", base: File.expand_path("..", __FILE__))
+
+  if java_ext
+    s.platform = 'java'
+    s.files += Dir["lib/json/ext/**/*.jar"]
+  else
+    s.extensions = Dir["ext/json/**/extconf.rb"]
+    s.files += Dir["ext/json/**/*.{c,h,rb}"]
+  end
+end
+
+if RUBY_ENGINE == 'jruby' && $0 == __FILE__
+  Gem::Builder.new(spec).build
+else
+  spec
+end
diff --git a/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json.rb b/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json.rb
new file mode 100644
index 00000000000..c481352354b
--- /dev/null
+++ b/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+require 'json/common'
+
+##
+# = JavaScript \Object Notation (\JSON)
+#
+# \JSON is a lightweight data-interchange format.
+#
+# \JSON is easy for us humans to read and write,
+# and equally simple for machines to read (parse) and write (generate).
+#
+# \JSON is language-independent, making it an ideal interchange format
+# for applications in differing programming languages
+# and on differing operating systems.
+#
+
+module JSON
+  require 'json/version'
+  require 'json/ext'
+end
diff --git a/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/common.rb b/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/common.rb
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/ext.rb b/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/ext.rb
new file mode 100644
index 00000000000..da17df1e8a6
--- /dev/null
+++ b/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/ext.rb
@@ -0,0 +1,69 @@
+# frozen_string_literal: true
+
+require 'json/common'
+
+module JSON
+  # This module holds all the modules/classes that implement JSON's
+  # functionality as C extensions.
+  module Ext
+    class Parser
+      class << self
+        def parse(...)
+          new(...).parse
+        end
+        alias_method :parse, :parse # Allow redefinition by extensions
+      end
+
+      def initialize(source, opts = nil)
+        @source = source
+        @config = Config.new(opts)
+      end
+
+      def source
+        @source.dup
+      end
+
+      def parse
+        @config.parse(@source)
+      end
+    end
+
+    require 'json/ext/parser'
+    Ext::Parser::Config = Ext::ParserConfig
+    JSON.parser = Ext::Parser
+
+    if RUBY_ENGINE == 'truffleruby'
+      require 'json/truffle_ruby/generator'
+      JSON.generator = JSON::TruffleRuby::Generator
+    else
+      require 'json/ext/generator'
+      JSON.generator = Generator
+    end
+  end
+
+  if defined?(ResumableParser) # Not yet available on JRuby
+    class ResumableParser
+      # Returns whether the parser is entirely done: no unconsumed bytes in
+      # the buffer, no document under construction and no parsed value
+      # awaiting retrieval.
+      #
+      # The main use case is detecting a truncated stream once the input is
+      # exhausted:
+      #
+      #   loop do
+      #     begin
+      #       parser << socket.readpartial(4096)
+      #     rescue EOFError
+      #       break
+      #     end
+      #     while parser.parse
+      #       process(parser.value)
+      #     end
+      #   end
+      #   warn "stream was truncated" unless parser.empty?
+      def empty?
+        eos? && !partial_value? && !value?
+      end
+    end
+  end
+end
diff --git a/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/ext/generator.jar-extract/META-INF/MANIFEST.MF b/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/ext/generator.jar-extract/META-INF/MANIFEST.MF
new file mode 100644
index 00000000000..f817567d050
--- /dev/null
+++ b/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/ext/generator.jar-extract/META-INF/MANIFEST.MF
@@ -0,0 +1,3 @@
+Manifest-Version: 1.0
+Created-By: 10.0.1 (Oracle Corporation)
+
diff --git a/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/ext/generator.jar-extract/json/ext/Generator.class b/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/ext/generator.jar-extract/json/ext/Generator.class
new file mode 100644
index 00000000000..13c6f213ff0
Binary files /dev/null and b/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/ext/generator.jar-extract/json/ext/Generator.class differ
diff --git a/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/ext/generator/state.rb b/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/ext/generator/state.rb
new file mode 100644
index 00000000000..a9578b9bd7a
--- /dev/null
+++ b/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/ext/generator/state.rb
@@ -0,0 +1,77 @@
+# frozen_string_literal: true
+
+module JSON
+  module Ext
+    module Generator
+      class State
+        # call-seq: new(opts = {})
+        #
+        # Instantiates a new State object, configured by _opts_.
+        #
+        # Argument +opts+, if given, contains a \Hash of options for the generation.
+        # See {Generating Options}[rdoc-ref:JSON@Generating+Options].
+        def initialize(opts = nil)
+          if opts && !opts.empty?
+            configure(opts)
+          end
+        end
+
+        # call-seq: configure(opts)
+        #
+        # Configure this State instance with the Hash _opts_, and return
+        # itself.
+        def configure(opts)
+          unless opts.is_a?(Hash)
+            if opts.respond_to?(:to_hash)
+              opts = opts.to_hash
+            elsif opts.respond_to?(:to_h)
+              opts = opts.to_h
+            else
+              raise TypeError, "can't convert #{opts.class} into Hash"
+            end
+          end
+          _configure(opts)
+        end
+
+        alias_method :merge, :configure
+
+        # call-seq: to_h
+        #
+        # Returns the configuration instance variables as a hash, that can be
+        # passed to the configure method.
+        def to_h
+          result = {
+            indent: indent,
+            space: space,
+            space_before: space_before,
+            object_nl: object_nl,
+            array_nl: array_nl,
+            as_json: as_json,
+            allow_nan: allow_nan?,
+            ascii_only: ascii_only?,
+            max_nesting: max_nesting,
+            script_safe: script_safe?,
+            strict: strict?,
+            depth: depth,
+            buffer_initial_length: buffer_initial_length,
+            sort_keys: sort_keys
+          }
+
+          allow_duplicate_key = allow_duplicate_key?
+          unless allow_duplicate_key.nil?
+            result[:allow_duplicate_key] = allow_duplicate_key
+          end
+
+          instance_variables.each do |iv|
+            iv = iv.to_s[1..-1]
+            result[iv.to_sym] = self[iv]
+          end
+
+          result
+        end
+
+        alias_method :to_hash, :to_h
+      end
+    end
+  end
+end
diff --git a/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/truffle_ruby/generator.rb b/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/truffle_ruby/generator.rb
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/version.rb b/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/version.rb
new file mode 100644
index 00000000000..318272defda
--- /dev/null
+++ b/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/lib/json/version.rb
@@ -0,0 +1,5 @@
+# frozen_string_literal: true
+
+module JSON
+  VERSION = '3.0.2'
+end
diff --git a/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/metadata.gz-extract/metadata.gz-extract b/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/metadata.gz-extract/metadata.gz-extract
new file mode 100644
index 00000000000..b8b3b9a4fdf
--- /dev/null
+++ b/tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/metadata.gz-extract/metadata.gz-extract
@@ -0,0 +1,62 @@
+--- !ruby/object:Gem::Specification
+name: json
+version: !ruby/object:Gem::Version
+  version: 3.0.2
+platform: java
+authors:
+- Daniel Luz
+bindir: bin
+cert_chain: []
+date: 2026-09-09 00:00:00.000000000 Z
+dependencies: []
+description: A JSON implementation as a JRuby extension.
+email: dev+ruby@mernen.com
+executables: []
+extensions: []
+extra_rdoc_files:
+- README.md
+files:
+- BSDL
+- CHANGES.md
+- COPYING
+- LEGAL
+- README.md
+- json.gemspec
+- lib/json.rb
+- lib/json/common.rb
+- lib/json/ext.rb
+- lib/json/ext/generator.jar
+- lib/json/ext/generator/state.rb
+- lib/json/truffle_ruby/generator.rb
+- lib/json/version.rb
+homepage: https://github.com/ruby/json
+licenses:
+- Ruby
+metadata:
+  bug_tracker_uri: https://github.com/ruby/json/issues
+  changelog_uri: https://github.com/ruby/json/blob/master/CHANGES.md
+  documentation_uri: https://docs.ruby-lang.org/en/master/JSON.html
+  homepage_uri: https://github.com/ruby/json
+  source_code_uri: https://github.com/ruby/json
+rdoc_options:
+- "--title"
+- JSON implementation for Ruby
+- "--main"
+- README.md
+require_paths:
+- lib
+required_ruby_version: !ruby/object:Gem::Requirement
+  requirements:
+  - - ">="
+    - !ruby/object:Gem::Version
+      version: '2.7'
+required_rubygems_version: !ruby/object:Gem::Requirement
+  requirements:
+  - - ">="
+    - !ruby/object:Gem::Version
+      version: '0'
+requirements: []
+rubygems_version: 3.6.3
+specification_version: 4
+summary: JSON Implementation for Ruby
+test_files: []
diff --git a/tests/packagedcode/data/rubygems/package/m2r-2.1.0.gem.json b/tests/packagedcode/data/rubygems/package/m2r-2.1.0.gem.json
index 24edcc7bdfc..ee3cf4ac110 100644
--- a/tests/packagedcode/data/rubygems/package/m2r-2.1.0.gem.json
+++ b/tests/packagedcode/data/rubygems/package/m2r-2.1.0.gem.json
@@ -1,171 +1,553 @@
-[
-  {
-    "type": "gem", 
-    "namespace": null, 
-    "name": "m2r", 
-    "version": "2.1.0", 
-    "qualifiers": {}, 
-    "subpath": null, 
-    "primary_language": "Ruby", 
-    "description": "Mongrel2 interface and handler library for Ruby.\nMongrel2 Rack handler and pure handler. Works with Rack, so it works with Rails!", 
-    "release_date": "2013-10-29", 
-    "parties": [
-      {
-        "type": null, 
-        "role": "author", 
-        "name": "Colin Curtin", 
-        "email": null, 
-        "url": null
-      }, 
-      {
-        "type": null, 
-        "role": "author", 
-        "name": "Pradeep Elankumaran", 
-        "email": null, 
-        "url": null
-      }, 
-      {
-        "type": null, 
-        "role": "author", 
-        "name": "Pawel Pacana", 
-        "email": null, 
-        "url": null
-      }, 
-      {
-        "type": null, 
-        "role": "author", 
-        "name": "Robert Pankowecki", 
-        "email": null, 
-        "url": null
-      }
-    ], 
-    "keywords": [], 
-    "homepage_url": "http://github.com/perplexes/m2r", 
-    "download_url": "https://rubygems.org/downloads/m2r-2.1.0.gem", 
-    "size": null, 
-    "sha1": null, 
-    "md5": null, 
-    "sha256": null, 
-    "sha512": null, 
-    "bug_tracking_url": null, 
-    "code_view_url": null, 
-    "vcs_url": null, 
-    "copyright": null, 
-    "license_expression": "mit", 
-    "declared_license": [
-      "MIT"
-    ], 
-    "notice_text": null, 
-    "dependencies": [
-      {
-        "purl": "pkg:gem/ffi-rzmq", 
-        "requirement": ">= 1.0.1", 
-        "scope": "runtime", 
-        "is_runtime": true, 
-        "is_optional": false, 
-        "is_pinned": false
-      }, 
-      {
-        "purl": "pkg:gem/ffi", 
-        "requirement": ">= 1.0.0", 
-        "scope": "runtime", 
-        "is_runtime": true, 
-        "is_optional": false, 
-        "is_pinned": false
-      }, 
-      {
-        "purl": "pkg:gem/multi_json", 
-        "requirement": null, 
-        "scope": "runtime", 
-        "is_runtime": true, 
-        "is_optional": false, 
-        "is_pinned": false
-      }, 
-      {
-        "purl": "pkg:gem/tnetstring", 
-        "requirement": null, 
-        "scope": "runtime", 
-        "is_runtime": true, 
-        "is_optional": false, 
-        "is_pinned": false
-      }, 
-      {
-        "purl": "pkg:gem/rack", 
-        "requirement": null, 
-        "scope": "development", 
-        "is_runtime": false, 
-        "is_optional": true, 
-        "is_pinned": false
-      }, 
-      {
-        "purl": "pkg:gem/rake", 
-        "requirement": null, 
-        "scope": "development", 
-        "is_runtime": false, 
-        "is_optional": true, 
-        "is_pinned": false
-      }, 
-      {
-        "purl": "pkg:gem/minitest", 
-        "requirement": "= 3.2.0", 
-        "scope": "development", 
-        "is_runtime": false, 
-        "is_optional": true, 
-        "is_pinned": true
-      }, 
-      {
-        "purl": "pkg:gem/mocha", 
-        "requirement": ">= 0.14.0", 
-        "scope": "development", 
-        "is_runtime": false, 
-        "is_optional": true, 
-        "is_pinned": false
-      }, 
-      {
-        "purl": "pkg:gem/bbq", 
-        "requirement": "= 0.0.4", 
-        "scope": "development", 
-        "is_runtime": false, 
-        "is_optional": true, 
-        "is_pinned": true
-      }, 
-      {
-        "purl": "pkg:gem/capybara-mechanize", 
-        "requirement": "= 0.3.0", 
-        "scope": "development", 
-        "is_runtime": false, 
-        "is_optional": true, 
-        "is_pinned": true
-      }, 
-      {
-        "purl": "pkg:gem/activesupport", 
-        "requirement": "~> 3.2.7", 
-        "scope": "development", 
-        "is_runtime": false, 
-        "is_optional": true, 
-        "is_pinned": false
-      }, 
-      {
-        "purl": "pkg:gem/yard", 
-        "requirement": "~> 0.8.2", 
-        "scope": "development", 
-        "is_runtime": false, 
-        "is_optional": true, 
-        "is_pinned": false
-      }, 
-      {
-        "purl": "pkg:gem/kramdown", 
-        "requirement": "~> 0.13.7", 
-        "scope": "development", 
-        "is_runtime": false, 
-        "is_optional": true, 
-        "is_pinned": false
-      }
-    ], 
-    "source_packages": [], 
-    "purl": "pkg:gem/m2r@2.1.0", 
-    "repository_homepage_url": "https://rubygems.org/gems/m2r/versions/2.1.0", 
-    "repository_download_url": "https://rubygems.org/downloads/m2r-2.1.0.gem", 
-    "api_data_url": "https://rubygems.org/api/v2/rubygems/m2r/versions/2.1.0.json"
-  }
-]
\ No newline at end of file
+{
+  "packages": [
+    {
+      "type": "gem",
+      "namespace": null,
+      "name": "m2r",
+      "version": "2.1.0",
+      "qualifiers": {},
+      "subpath": null,
+      "primary_language": "Ruby",
+      "description": "Mongrel2 interface and handler library for Ruby.\nMongrel2 Rack handler and pure handler. Works with Rack, so it works with Rails!",
+      "release_date": "2013-10-29",
+      "parties": [
+        {
+          "type": null,
+          "role": "author",
+          "name": "Colin Curtin",
+          "email": null,
+          "url": null
+        },
+        {
+          "type": null,
+          "role": "author",
+          "name": "Pradeep Elankumaran",
+          "email": null,
+          "url": null
+        },
+        {
+          "type": null,
+          "role": "author",
+          "name": "Pawel Pacana",
+          "email": null,
+          "url": null
+        },
+        {
+          "type": null,
+          "role": "author",
+          "name": "Robert Pankowecki",
+          "email": null,
+          "url": null
+        }
+      ],
+      "keywords": [],
+      "homepage_url": "http://github.com/perplexes/m2r",
+      "download_url": "https://rubygems.org/downloads/m2r-2.1.0.gem",
+      "size": null,
+      "sha1": null,
+      "md5": null,
+      "sha256": null,
+      "sha512": null,
+      "bug_tracking_url": null,
+      "code_view_url": null,
+      "vcs_url": null,
+      "copyright": null,
+      "holder": null,
+      "declared_license_expression": "mit",
+      "declared_license_expression_spdx": "MIT",
+      "license_detections": [
+        {
+          "license_expression": "mit",
+          "license_expression_spdx": "MIT",
+          "matches": [
+            {
+              "license_expression": "mit",
+              "license_expression_spdx": "MIT",
+              "from_file": "m2r-2.1.0.gem",
+              "start_line": 1,
+              "end_line": 1,
+              "matcher": "1-spdx-id",
+              "score": 100.0,
+              "matched_length": 1,
+              "match_coverage": 100.0,
+              "rule_relevance": 100,
+              "rule_identifier": "spdx-license-identifier-mit-5da48780aba670b0860c46d899ed42a0f243ff06",
+              "rule_url": null,
+              "matched_text": "MIT"
+            }
+          ],
+          "identifier": "mit-a822f434-d61f-f2b1-c792-8b8cb9e7b9bf"
+        }
+      ],
+      "other_license_expression": null,
+      "other_license_expression_spdx": null,
+      "other_license_detections": [],
+      "extracted_license_statement": "- MIT\n",
+      "notice_text": null,
+      "source_packages": [],
+      "is_private": false,
+      "is_virtual": false,
+      "extra_data": {},
+      "repository_homepage_url": "https://rubygems.org/gems/m2r/versions/2.1.0",
+      "repository_download_url": "https://rubygems.org/downloads/m2r-2.1.0.gem",
+      "api_data_url": "https://rubygems.org/api/v2/rubygems/m2r/versions/2.1.0.json",
+      "package_uid": "pkg:gem/m2r@2.1.0?uuid=fixed-uid-done-for-testing-5642512d1758",
+      "datafile_paths": [
+        "m2r-2.1.0.gem"
+      ],
+      "datasource_ids": [
+        "gem_archive"
+      ],
+      "purl": "pkg:gem/m2r@2.1.0"
+    }
+  ],
+  "dependencies": [
+    {
+      "purl": "pkg:gem/ffi-rzmq",
+      "extracted_requirement": ">= 1.0.1",
+      "scope": "runtime",
+      "is_runtime": true,
+      "is_optional": false,
+      "is_pinned": false,
+      "is_direct": true,
+      "resolved_package": {},
+      "extra_data": {},
+      "dependency_uid": "pkg:gem/ffi-rzmq?uuid=fixed-uid-done-for-testing-5642512d1758",
+      "for_package_uid": "pkg:gem/m2r@2.1.0?uuid=fixed-uid-done-for-testing-5642512d1758",
+      "datafile_path": "m2r-2.1.0.gem",
+      "datasource_id": "gem_archive"
+    },
+    {
+      "purl": "pkg:gem/ffi",
+      "extracted_requirement": ">= 1.0.0",
+      "scope": "runtime",
+      "is_runtime": true,
+      "is_optional": false,
+      "is_pinned": false,
+      "is_direct": true,
+      "resolved_package": {},
+      "extra_data": {},
+      "dependency_uid": "pkg:gem/ffi?uuid=fixed-uid-done-for-testing-5642512d1758",
+      "for_package_uid": "pkg:gem/m2r@2.1.0?uuid=fixed-uid-done-for-testing-5642512d1758",
+      "datafile_path": "m2r-2.1.0.gem",
+      "datasource_id": "gem_archive"
+    },
+    {
+      "purl": "pkg:gem/multi_json",
+      "extracted_requirement": null,
+      "scope": "runtime",
+      "is_runtime": true,
+      "is_optional": false,
+      "is_pinned": false,
+      "is_direct": true,
+      "resolved_package": {},
+      "extra_data": {},
+      "dependency_uid": "pkg:gem/multi_json?uuid=fixed-uid-done-for-testing-5642512d1758",
+      "for_package_uid": "pkg:gem/m2r@2.1.0?uuid=fixed-uid-done-for-testing-5642512d1758",
+      "datafile_path": "m2r-2.1.0.gem",
+      "datasource_id": "gem_archive"
+    },
+    {
+      "purl": "pkg:gem/tnetstring",
+      "extracted_requirement": null,
+      "scope": "runtime",
+      "is_runtime": true,
+      "is_optional": false,
+      "is_pinned": false,
+      "is_direct": true,
+      "resolved_package": {},
+      "extra_data": {},
+      "dependency_uid": "pkg:gem/tnetstring?uuid=fixed-uid-done-for-testing-5642512d1758",
+      "for_package_uid": "pkg:gem/m2r@2.1.0?uuid=fixed-uid-done-for-testing-5642512d1758",
+      "datafile_path": "m2r-2.1.0.gem",
+      "datasource_id": "gem_archive"
+    },
+    {
+      "purl": "pkg:gem/rack",
+      "extracted_requirement": null,
+      "scope": "development",
+      "is_runtime": false,
+      "is_optional": true,
+      "is_pinned": false,
+      "is_direct": true,
+      "resolved_package": {},
+      "extra_data": {},
+      "dependency_uid": "pkg:gem/rack?uuid=fixed-uid-done-for-testing-5642512d1758",
+      "for_package_uid": "pkg:gem/m2r@2.1.0?uuid=fixed-uid-done-for-testing-5642512d1758",
+      "datafile_path": "m2r-2.1.0.gem",
+      "datasource_id": "gem_archive"
+    },
+    {
+      "purl": "pkg:gem/rake",
+      "extracted_requirement": null,
+      "scope": "development",
+      "is_runtime": false,
+      "is_optional": true,
+      "is_pinned": false,
+      "is_direct": true,
+      "resolved_package": {},
+      "extra_data": {},
+      "dependency_uid": "pkg:gem/rake?uuid=fixed-uid-done-for-testing-5642512d1758",
+      "for_package_uid": "pkg:gem/m2r@2.1.0?uuid=fixed-uid-done-for-testing-5642512d1758",
+      "datafile_path": "m2r-2.1.0.gem",
+      "datasource_id": "gem_archive"
+    },
+    {
+      "purl": "pkg:gem/minitest",
+      "extracted_requirement": "= 3.2.0",
+      "scope": "development",
+      "is_runtime": false,
+      "is_optional": true,
+      "is_pinned": true,
+      "is_direct": true,
+      "resolved_package": {},
+      "extra_data": {},
+      "dependency_uid": "pkg:gem/minitest?uuid=fixed-uid-done-for-testing-5642512d1758",
+      "for_package_uid": "pkg:gem/m2r@2.1.0?uuid=fixed-uid-done-for-testing-5642512d1758",
+      "datafile_path": "m2r-2.1.0.gem",
+      "datasource_id": "gem_archive"
+    },
+    {
+      "purl": "pkg:gem/mocha",
+      "extracted_requirement": ">= 0.14.0",
+      "scope": "development",
+      "is_runtime": false,
+      "is_optional": true,
+      "is_pinned": false,
+      "is_direct": true,
+      "resolved_package": {},
+      "extra_data": {},
+      "dependency_uid": "pkg:gem/mocha?uuid=fixed-uid-done-for-testing-5642512d1758",
+      "for_package_uid": "pkg:gem/m2r@2.1.0?uuid=fixed-uid-done-for-testing-5642512d1758",
+      "datafile_path": "m2r-2.1.0.gem",
+      "datasource_id": "gem_archive"
+    },
+    {
+      "purl": "pkg:gem/bbq",
+      "extracted_requirement": "= 0.0.4",
+      "scope": "development",
+      "is_runtime": false,
+      "is_optional": true,
+      "is_pinned": true,
+      "is_direct": true,
+      "resolved_package": {},
+      "extra_data": {},
+      "dependency_uid": "pkg:gem/bbq?uuid=fixed-uid-done-for-testing-5642512d1758",
+      "for_package_uid": "pkg:gem/m2r@2.1.0?uuid=fixed-uid-done-for-testing-5642512d1758",
+      "datafile_path": "m2r-2.1.0.gem",
+      "datasource_id": "gem_archive"
+    },
+    {
+      "purl": "pkg:gem/capybara-mechanize",
+      "extracted_requirement": "= 0.3.0",
+      "scope": "development",
+      "is_runtime": false,
+      "is_optional": true,
+      "is_pinned": true,
+      "is_direct": true,
+      "resolved_package": {},
+      "extra_data": {},
+      "dependency_uid": "pkg:gem/capybara-mechanize?uuid=fixed-uid-done-for-testing-5642512d1758",
+      "for_package_uid": "pkg:gem/m2r@2.1.0?uuid=fixed-uid-done-for-testing-5642512d1758",
+      "datafile_path": "m2r-2.1.0.gem",
+      "datasource_id": "gem_archive"
+    },
+    {
+      "purl": "pkg:gem/activesupport",
+      "extracted_requirement": "~> 3.2.7",
+      "scope": "development",
+      "is_runtime": false,
+      "is_optional": true,
+      "is_pinned": false,
+      "is_direct": true,
+      "resolved_package": {},
+      "extra_data": {},
+      "dependency_uid": "pkg:gem/activesupport?uuid=fixed-uid-done-for-testing-5642512d1758",
+      "for_package_uid": "pkg:gem/m2r@2.1.0?uuid=fixed-uid-done-for-testing-5642512d1758",
+      "datafile_path": "m2r-2.1.0.gem",
+      "datasource_id": "gem_archive"
+    },
+    {
+      "purl": "pkg:gem/yard",
+      "extracted_requirement": "~> 0.8.2",
+      "scope": "development",
+      "is_runtime": false,
+      "is_optional": true,
+      "is_pinned": false,
+      "is_direct": true,
+      "resolved_package": {},
+      "extra_data": {},
+      "dependency_uid": "pkg:gem/yard?uuid=fixed-uid-done-for-testing-5642512d1758",
+      "for_package_uid": "pkg:gem/m2r@2.1.0?uuid=fixed-uid-done-for-testing-5642512d1758",
+      "datafile_path": "m2r-2.1.0.gem",
+      "datasource_id": "gem_archive"
+    },
+    {
+      "purl": "pkg:gem/kramdown",
+      "extracted_requirement": "~> 0.13.7",
+      "scope": "development",
+      "is_runtime": false,
+      "is_optional": true,
+      "is_pinned": false,
+      "is_direct": true,
+      "resolved_package": {},
+      "extra_data": {},
+      "dependency_uid": "pkg:gem/kramdown?uuid=fixed-uid-done-for-testing-5642512d1758",
+      "for_package_uid": "pkg:gem/m2r@2.1.0?uuid=fixed-uid-done-for-testing-5642512d1758",
+      "datafile_path": "m2r-2.1.0.gem",
+      "datasource_id": "gem_archive"
+    }
+  ],
+  "files": [
+    {
+      "path": "m2r-2.1.0.gem",
+      "type": "file",
+      "package_data": [
+        {
+          "type": "gem",
+          "namespace": null,
+          "name": "m2r",
+          "version": "2.1.0",
+          "qualifiers": {},
+          "subpath": null,
+          "primary_language": "Ruby",
+          "description": "Mongrel2 interface and handler library for Ruby.\nMongrel2 Rack handler and pure handler. Works with Rack, so it works with Rails!",
+          "release_date": "2013-10-29",
+          "parties": [
+            {
+              "type": null,
+              "role": "author",
+              "name": "Colin Curtin",
+              "email": null,
+              "url": null
+            },
+            {
+              "type": null,
+              "role": "author",
+              "name": "Pradeep Elankumaran",
+              "email": null,
+              "url": null
+            },
+            {
+              "type": null,
+              "role": "author",
+              "name": "Pawel Pacana",
+              "email": null,
+              "url": null
+            },
+            {
+              "type": null,
+              "role": "author",
+              "name": "Robert Pankowecki",
+              "email": null,
+              "url": null
+            }
+          ],
+          "keywords": [],
+          "homepage_url": "http://github.com/perplexes/m2r",
+          "download_url": "https://rubygems.org/downloads/m2r-2.1.0.gem",
+          "size": null,
+          "sha1": null,
+          "md5": null,
+          "sha256": null,
+          "sha512": null,
+          "bug_tracking_url": null,
+          "code_view_url": null,
+          "vcs_url": null,
+          "copyright": null,
+          "holder": null,
+          "declared_license_expression": "mit",
+          "declared_license_expression_spdx": "MIT",
+          "license_detections": [
+            {
+              "license_expression": "mit",
+              "license_expression_spdx": "MIT",
+              "matches": [
+                {
+                  "license_expression": "mit",
+                  "license_expression_spdx": "MIT",
+                  "from_file": "m2r-2.1.0.gem",
+                  "start_line": 1,
+                  "end_line": 1,
+                  "matcher": "1-spdx-id",
+                  "score": 100.0,
+                  "matched_length": 1,
+                  "match_coverage": 100.0,
+                  "rule_relevance": 100,
+                  "rule_identifier": "spdx-license-identifier-mit-5da48780aba670b0860c46d899ed42a0f243ff06",
+                  "rule_url": null,
+                  "matched_text": "MIT"
+                }
+              ],
+              "identifier": "mit-a822f434-d61f-f2b1-c792-8b8cb9e7b9bf"
+            }
+          ],
+          "other_license_expression": null,
+          "other_license_expression_spdx": null,
+          "other_license_detections": [],
+          "extracted_license_statement": "- MIT\n",
+          "notice_text": null,
+          "source_packages": [],
+          "file_references": [],
+          "is_private": false,
+          "is_virtual": false,
+          "extra_data": {},
+          "dependencies": [
+            {
+              "purl": "pkg:gem/ffi-rzmq",
+              "extracted_requirement": ">= 1.0.1",
+              "scope": "runtime",
+              "is_runtime": true,
+              "is_optional": false,
+              "is_pinned": false,
+              "is_direct": true,
+              "resolved_package": {},
+              "extra_data": {}
+            },
+            {
+              "purl": "pkg:gem/ffi",
+              "extracted_requirement": ">= 1.0.0",
+              "scope": "runtime",
+              "is_runtime": true,
+              "is_optional": false,
+              "is_pinned": false,
+              "is_direct": true,
+              "resolved_package": {},
+              "extra_data": {}
+            },
+            {
+              "purl": "pkg:gem/multi_json",
+              "extracted_requirement": null,
+              "scope": "runtime",
+              "is_runtime": true,
+              "is_optional": false,
+              "is_pinned": false,
+              "is_direct": true,
+              "resolved_package": {},
+              "extra_data": {}
+            },
+            {
+              "purl": "pkg:gem/tnetstring",
+              "extracted_requirement": null,
+              "scope": "runtime",
+              "is_runtime": true,
+              "is_optional": false,
+              "is_pinned": false,
+              "is_direct": true,
+              "resolved_package": {},
+              "extra_data": {}
+            },
+            {
+              "purl": "pkg:gem/rack",
+              "extracted_requirement": null,
+              "scope": "development",
+              "is_runtime": false,
+              "is_optional": true,
+              "is_pinned": false,
+              "is_direct": true,
+              "resolved_package": {},
+              "extra_data": {}
+            },
+            {
+              "purl": "pkg:gem/rake",
+              "extracted_requirement": null,
+              "scope": "development",
+              "is_runtime": false,
+              "is_optional": true,
+              "is_pinned": false,
+              "is_direct": true,
+              "resolved_package": {},
+              "extra_data": {}
+            },
+            {
+              "purl": "pkg:gem/minitest",
+              "extracted_requirement": "= 3.2.0",
+              "scope": "development",
+              "is_runtime": false,
+              "is_optional": true,
+              "is_pinned": true,
+              "is_direct": true,
+              "resolved_package": {},
+              "extra_data": {}
+            },
+            {
+              "purl": "pkg:gem/mocha",
+              "extracted_requirement": ">= 0.14.0",
+              "scope": "development",
+              "is_runtime": false,
+              "is_optional": true,
+              "is_pinned": false,
+              "is_direct": true,
+              "resolved_package": {},
+              "extra_data": {}
+            },
+            {
+              "purl": "pkg:gem/bbq",
+              "extracted_requirement": "= 0.0.4",
+              "scope": "development",
+              "is_runtime": false,
+              "is_optional": true,
+              "is_pinned": true,
+              "is_direct": true,
+              "resolved_package": {},
+              "extra_data": {}
+            },
+            {
+              "purl": "pkg:gem/capybara-mechanize",
+              "extracted_requirement": "= 0.3.0",
+              "scope": "development",
+              "is_runtime": false,
+              "is_optional": true,
+              "is_pinned": true,
+              "is_direct": true,
+              "resolved_package": {},
+              "extra_data": {}
+            },
+            {
+              "purl": "pkg:gem/activesupport",
+              "extracted_requirement": "~> 3.2.7",
+              "scope": "development",
+              "is_runtime": false,
+              "is_optional": true,
+              "is_pinned": false,
+              "is_direct": true,
+              "resolved_package": {},
+              "extra_data": {}
+            },
+            {
+              "purl": "pkg:gem/yard",
+              "extracted_requirement": "~> 0.8.2",
+              "scope": "development",
+              "is_runtime": false,
+              "is_optional": true,
+              "is_pinned": false,
+              "is_direct": true,
+              "resolved_package": {},
+              "extra_data": {}
+            },
+            {
+              "purl": "pkg:gem/kramdown",
+              "extracted_requirement": "~> 0.13.7",
+              "scope": "development",
+              "is_runtime": false,
+              "is_optional": true,
+              "is_pinned": false,
+              "is_direct": true,
+              "resolved_package": {},
+              "extra_data": {}
+            }
+          ],
+          "repository_homepage_url": "https://rubygems.org/gems/m2r/versions/2.1.0",
+          "repository_download_url": "https://rubygems.org/downloads/m2r-2.1.0.gem",
+          "api_data_url": "https://rubygems.org/api/v2/rubygems/m2r/versions/2.1.0.json",
+          "datasource_id": "gem_archive",
+          "purl": "pkg:gem/m2r@2.1.0"
+        }
+      ],
+      "for_packages": [
+        "pkg:gem/m2r@2.1.0?uuid=fixed-uid-done-for-testing-5642512d1758"
+      ],
+      "scan_errors": []
+    }
+  ]
+}
\ No newline at end of file
diff --git a/tests/packagedcode/test_plugin_package.py b/tests/packagedcode/test_plugin_package.py
index 77fe034dbaf..68ee6d97176 100644
--- a/tests/packagedcode/test_plugin_package.py
+++ b/tests/packagedcode/test_plugin_package.py
@@ -123,7 +123,7 @@ def test_package_command_scan_python(self):
         check_json_scan(expected_file, result_file, remove_uuid=True, regen=REGEN_TEST_FIXTURES)
 
     def test_package_command_scan_rubygems(self):
-        test_dir = self.get_test_loc('rubygems/package')
+        test_dir = self.get_test_loc('rubygems/package/m2r-2.1.0.gem')
         result_file = self.get_temp_file('json')
         expected_file = self.get_test_loc('plugin/rubygems-package-expected.json')
         run_scan_click(['--package', '--strip-root', '--processes', '-1', test_dir, '--json', result_file])
diff --git a/tests/packagedcode/test_rubygems.py b/tests/packagedcode/test_rubygems.py
index af55f355ab7..fffee60c3ee 100644
--- a/tests/packagedcode/test_rubygems.py
+++ b/tests/packagedcode/test_rubygems.py
@@ -17,10 +17,8 @@
 from packagedcode import rubygems
 from packages_test_utils import PackageTester
 from scancode_config import REGEN_TEST_FIXTURES
-
-# TODO: Add test with https://rubygems.org/gems/pbox2d/versions/1.0.3-java
-# this is a multiple personality package (Java  and Ruby)
-# see also https://rubygems.org/downloads/jaro_winkler-1.5.1-java.gem
+from scancode.cli_test_utils import run_scan_click
+from scancode.cli_test_utils import check_json_scan
 
 
 class TestGemSpec(PackageTester):
@@ -84,6 +82,24 @@ def test_rubygems_with_variables_gemspec(self):
         packages = rubygems.GemspecHandler.parse(test_file)
         self.check_packages_data(packages, expected_loc, regen=REGEN_TEST_FIXTURES)
 
+    def test_ruby_gem_scan(self):
+        test_file = self.get_test_loc('rubygems/package/m2r-2.1.0.gem')
+        expected_file = self.get_test_loc('rubygems/package/m2r-2.1.0.gem.json')
+        result_file = self.get_temp_file('results.json')
+        run_scan_click(['--package', test_file, '--json', result_file])
+        check_json_scan(
+            expected_file, result_file, remove_uuid=True, regen=REGEN_TEST_FIXTURES
+        )
+
+    def test_ruby_extracted_gem_scan(self):
+        test_file = self.get_test_loc('rubygems/package/json-3.0.2-java.gem-extract')
+        expected_file = self.get_test_loc('rubygems/package/json-3.0.2-java.gem-extract.json')
+        result_file = self.get_temp_file('results.json')
+        run_scan_click(['--package', test_file, '--json', result_file])
+        check_json_scan(
+            expected_file, result_file, remove_uuid=True, regen=REGEN_TEST_FIXTURES
+        )
+
 
 class TestRubyGemMetadata(FileBasedTesting):
     test_data_dir = os.path.join(os.path.dirname(__file__), 'data')