python3Packages.subunit: fix build and add tests

pkgs/development/python-modules/subunit/default.nix

@@ -1,22 +1,33 @@
 { buildPythonPackage
-, pkgs
-, testtools
+# pkgs dependencies
+, check
+, cppunit
+, pkg-config
+, subunit
+
+# python dependencies
+, fixtures
+, hypothesis
+, pytest
 , testscenarios
+, testtools
 }:
 
 buildPythonPackage {
-  name = pkgs.subunit.name;
-  src = pkgs.subunit.src;
+  inherit (subunit) name src meta;
 
+  nativeBuildInputs = [ pkg-config ];
+  buildInputs = [ check cppunit ];
   propagatedBuildInputs = [ testtools ];
-  checkInputs = [ testscenarios ];
-  nativeBuildInputs = [ pkgs.pkgconfig ];
-  buildInputs = [ pkgs.check pkgs.cppunit ];
 
-  patchPhase = ''
-    sed -i 's/version=VERSION/version="${pkgs.subunit.version}"/' setup.py
+  checkInputs = [ testscenarios hypothesis fixtures pytest ];
+  # ignore tests which call shell code, or call methods which haven't been implemented
+  checkPhase = ''
+    pytest python/subunit \
+      --ignore=python/subunit/tests/test_{output_filter,test_protocol{,2}}.py
   '';
 
-  meta = pkgs.subunit.meta;
-
+  patchPhase = ''
+    sed -i 's/version=VERSION/version="${subunit.version}"/' setup.py
+  '';
 }

pkgs/top-level/python-packages.nix

@@ -6158,7 +6158,9 @@ in {
 
   subdownloader = callPackage ../development/python-modules/subdownloader { };
 
-  subunit = callPackage ../development/python-modules/subunit { };
+  subunit = callPackage ../development/python-modules/subunit {
+    inherit (pkgs) subunit pkg-config cppunit check;
+  };
 
   sure = callPackage ../development/python-modules/sure { };