test: add setup.py integration cases

Signed-off-by: Alfredo Deza <adeza@anchore.com>

test/integration/pkg_cases.go

@@ -77,13 +77,21 @@ var cases = []struct {
 		},
 	},
 	{
-		name:        "find python packages",
+		name:        "find python requirements.txt packages",
 		pkgType:     pkg.PythonRequirementsPkg,
 		pkgLanguage: pkg.Python,
 		pkgInfo: map[string]string{
 			"flask": "4.0.0",
 		},
 	},
+	{
+		name:        "find python setup.py packages",
+		pkgType:     pkg.PythonSetupPkg,
+		pkgLanguage: pkg.Python,
+		pkgInfo: map[string]string{
+			"mypy": "v0.770",
+		},
+	},
 	{
 		name:        "find bundler packages",
 		pkgType:     pkg.BundlerPkg,

test/integration/test-fixtures/image-pkg-coverage/python/setup/setup.py

@@ -0,0 +1,42 @@
+from setuptools import setup
+
+# TODO: if py gets upgrade to >=1.6,
+#       remove _width_of_current_line in terminal.py
+INSTALL_REQUIRES = [
+    "py>=1.5.0",
+    "packaging",
+    "attrs>=17.4.0",  # should match oldattrs tox env.
+    "more-itertools>=4.0.0",
+    'atomicwrites>=1.0;sys_platform=="win32"',
+    'pathlib2>=2.2.0;python_version<"3.6"',
+    'colorama;sys_platform=="win32"',
+    "pluggy>=0.12,<1.0",
+    'importlib-metadata>=0.12;python_version<"3.8"',
+    "wcwidth",
+]
+
+
+def main():
+    setup(
+        use_scm_version={"write_to": "src/_pytest/_version.py"},
+        setup_requires=["setuptools-scm", "setuptools>=40.0"],
+        package_dir={"": "src"},
+        extras_require={
+            "testing": [
+                "argcomplete",
+                "hypothesis>=3.56",
+                "mock",
+                "nose",
+                "requests",
+                "xmlschema",
+            ],
+            "checkqa-mypy": [
+                "mypy==v0.770",  # keep this in sync with .pre-commit-config.yaml.
+            ],
+        },
+        install_requires=INSTALL_REQUIRES,
+    )
+
+
+if __name__ == "__main__":
+    main()