Address CRW

- add pytest.raises
 - add **kwargs in PackagingUtility.run(...)

tests/integration/test_buildrequire_invalid_module.py

@@ -4,42 +4,39 @@ import pytest
 from sh import ErrorReturnCode
 
 
-# expected error message
-CANNOT_FIND_ANY_MODULE_BUILDS = "Cannot find any module builds"  # ...
-
-
 def test_buildrequire_invalid_module(pkg_util, scenario, repo, koji):
     """
-        Run a build with with an invalid 'build_require' module.
-        I.e.: required module is picked in such a way,
-        that it is not tagged according to the the base module (platform) requirements,
-        see platform's modulemd file and its 'koji_tag_with_modules' attribute
-        (e.g.: platform: el-8.1.0 --> rhel-8.1.0-modules-build).
+    Run a build with with an invalid 'build_require' module.
+    I.e.: required module is picked in such a way,
+    that it is not tagged according to the the base module (platform) requirements,
+    see platform's modulemd file and its 'koji_tag_with_modules' attribute
+    (e.g.: platform: el-8.1.0 --> rhel-8.1.0-modules-build).
 
-        Koji resolver is expected to not be able to satisfy this build requirement
-        and hence fail the build.
+    Koji resolver is expected to not be able to satisfy this build requirement
+    and hence fail the build.
 
-        Assert that:
-        * the module build hasn't been accepted by MBS:
-          rhpkg utility returns something else than 0
-        * "Cannot find any module build..." found on STDERR
+    Assert that:
+    * the module build hasn't been accepted by MBS:
+      rhpkg utility returns something else than 0
+    * "Cannot find any module build..." found on STDERR
 
-        If assert fails:
-        * cancel all triggered module builds.
+    If assert fails:
+    * cancel all triggered module builds.
 
-        """
+    """
 
     repo.bump()
 
-    try:
-        builds = pkg_util.run("--optional", "rebuild_strategy=all")
-
-        for build in builds:
-            print("Canceling module-build {}...".format(build.id))
-            pkg_util.cancel(build)
-
-        pytest.fail("Invalid 'build_require' was satisfied and module build was accepted by MBS!")
-
-    except ErrorReturnCode as e:
-        # expected outcome: build submission fails
-        assert CANNOT_FIND_ANY_MODULE_BUILDS in e.stderr.decode("utf-8")
+    expected_error = "Cannot find any module builds"
+    with pytest.raises(ErrorReturnCode) as excinfo:
+        # Override 'baked' (_err=sys.stderr) stderr redirect:
+        #   Here we are fine with what plain sh.Command gives us
+        #   (otherwise ErrorReturnCode.stderr is incomplete).
+        builds = pkg_util.run("--optional", "rebuild_strategy=all", _err=None)
+        try:
+            for build in builds:
+                print("Canceling module-build {}...".format(build.id))
+                pkg_util.cancel(build)
+        except:
+            pass
+    assert expected_error in excinfo.value.stderr.decode("utf-8")

tests/integration/utils.py

@@ -167,15 +167,13 @@ class PackagingUtility:
 
     def __init__(self, packaging_utility, mbs_api):
         self._packaging_utility = Command(packaging_utility).bake(
-            # review: is redirect necessary?
-            # In case of failure, I can't find the stderr in the resulting exception object..
-            # _out=sys.stdout,
-            # _err=sys.stderr,
+            _out=sys.stdout,
+            _err=sys.stderr,
             _tee=True
         )
         self._mbs_api = mbs_api
 
-    def run(self, *args, reuse=None):
+    def run(self, *args, reuse=None, **kwargs):
         """Run one or more module builds
 
         :param args: Options and arguments for the build command
@@ -195,7 +193,7 @@ class PackagingUtility:
             else:
                 build_ids = [reuse]
         else:
-            stdout = self._packaging_utility("module-build", *args).stdout.decode("utf-8")
+            stdout = self._packaging_utility("module-build", *args, **kwargs).stdout.decode("utf-8")
             build_ids = re.findall(self._mbs_api + r"module-builds/(\d+)", stdout)
         return [Build(self._mbs_api, int(build_id)) for build_id in build_ids]