replace f string with urljoin

Signed-off-by: Tushar Goel <tushar.goel.dav@gmail.com>

Author: TG1999

vulnerabilities/importers/alpine_linux.py

@@ -111,7 +111,7 @@ def fetch_advisory_links(
         return iter([])
     for anchor_tag in anchor_tags:
         if anchor_tag.text.endswith("json"):
-            yield f"{advisory_directory_link}{anchor_tag.text}"
+            yield urljoin(advisory_directory_link, anchor_tag.text)
 
 
 def check_for_attributes(record) -> bool:

vulnerabilities/tests/test_alpine.py

@@ -491,9 +491,14 @@ def test_fetch_advisory_directory_links_failure(caplog):
 
 
 def test_fetch_advisory_links():
-    expected = ["v3.11community.json", "v3.11main.json"]
+    expected = [
+        "https://secdb.alpinelinux.org/v3.11/community.json",
+        "https://secdb.alpinelinux.org/v3.11/main.json",
+    ]
     with open(os.path.join(TEST_DATA, "web_pages", "v3.11.html")) as f:
-        assert list(fetch_advisory_links(f.read(), "v3.11")) == expected
+        assert (
+            list(fetch_advisory_links(f.read(), "https://secdb.alpinelinux.org/v3.11/")) == expected
+        )
 
 
 def test_fetch_advisory_links_failure(caplog):