requirement: Remove incorrect assertion around URL requirements without egg fragment

CHANGELOG.md

@@ -13,6 +13,10 @@ All versions prior to 0.0.9 are untracked.
 * Fixed an issue where packages on PyPI with no published versions trigger a
   dependency resolution failure instead of being skipped
   ([#357](https://github.com/trailofbits/pip-audit/pull/357))
+
+* Fixed an incorrect assertion triggering for non-editable URL requirements that
+  don't have an egg fragment
+  ([#359](https://github.com/trailofbits/pip-audit/pull/359))
 
 ## [2.4.3]
 

pip_audit/_dependency_source/requirement.py

@@ -14,12 +14,7 @@
 from packaging.requirements import Requirement
 from packaging.specifiers import SpecifierSet
 from packaging.version import Version
-from pip_requirements_parser import (
-    EditableRequirement,
-    InstallRequirement,
-    InvalidRequirementLine,
-    RequirementsFile,
-)
+from pip_requirements_parser import InstallRequirement, InvalidRequirementLine, RequirementsFile
 
 from pip_audit._dependency_source import (
     DependencyFixError,
@@ -95,13 +90,12 @@ def collect(self) -> Iterator[Dependency]:
                 req_names: Set[str] = set()
                 for req in rf.requirements:
                     if req.req is None:
-                        # For editable requirements that don't have an egg fragment that lists the
-                        # the package name and version, `pip-requirements-parser` won't attach a
+                        # For URL requirements that don't have an egg fragment that lists the
+                        # package name and version, `pip-requirements-parser` won't attach a
                         # `Requirement` object to the `InstallRequirement`.
                         #
                         # In this case, we can't audit the dependency so we should signal to the
                         # caller that we're skipping it.
-                        assert isinstance(req, EditableRequirement)
                         yield SkippedDependency(
                             name=req.requirement_line.line,
                             skip_reason="could not deduce package/specifier pair from requirement, "

test/dependency_source/test_requirement.py

@@ -140,6 +140,26 @@ def test_requirement_source_editable_without_egg_fragment(monkeypatch):
     )
 
 
+def test_requirement_source_non_editable_without_egg_fragment(monkeypatch):
+    source = requirement.RequirementSource([Path("requirements1.txt")], ResolveLibResolver())
+
+    monkeypatch.setattr(
+        pip_requirements_parser,
+        "get_file_content",
+        lambda _: "git+https://github.com/unbit/uwsgi.git@1bb9ad77c6d2d310c2d6d1d9ad62de61f725b824",
+    )
+
+    specs = list(source.collect())
+    assert (
+        SkippedDependency(
+            name="git+https://github.com/unbit/uwsgi.git@1bb9ad77c6d2d310c2d6d1d9ad62de61f725b824",
+            skip_reason="could not deduce package/specifier pair from requirement, please specify "
+            "them with #egg=your_package_name==your_package_version",
+        )
+        in specs
+    )
+
+
 def _check_fixes(
     input_reqs: List[str],
     expected_reqs: List[str],