Add test for ruby importer

Signed-off-by: sbs2001 <shivam.sandbhor@gmail.com>

Author: sbs2001

vulnerabilities/tests/test_ruby.py

@@ -0,0 +1,15 @@
+from vulnerabilities.scraper.ruby import get_all_versions_of_package
+from vulnerabilities.scraper.ruby import get_patched_range 
+from dephell_specifier import RangeSpecifier
+
+
+
+def test_get_all_versions_of_package():
+    versions = set(get_all_versions_of_package('actionpack'))
+    expected=set(['1.10.2', '4.0.3', '3.2.3', '4.2.0.beta3', '5.2.3', '4.1.14.2', '4.0.13'])
+    assert versions >= expected
+
+def test_get_patched_range():
+    expected = set([RangeSpecifier('>4'),RangeSpecifier('~>4.1')])
+    assert set(get_patched_range(['>4','~>4.1','>4.2rc']))  == expected
+