def test_git_diff_error_diff_quality(self):
# Patch the output of `git diff` to return an error
self._set_git_diff_output("", "fatal error", 1)
# Expect an error
with self.assertRaises(CommandError):
diff_quality_main(["diff-quality", "--violations", "pycodestyle"])
def test_git_diff_error_diff_quality(self):
# Patch the output of `git diff` to return an error
self._set_git_diff_output('', 'fatal error', 1)
# Expect an error
with self.assertRaises(CommandError):
diff_quality_main(['diff-quality', '--violations', 'pycodestyle'])
def _check_html_report(
self,
git_diff_path,
expected_html_path,
tool_args,
expected_status=0,
css_file=None,
):
"""
Verify that the tool produces the expected HTML report.
`git_diff_path` is a path to a fixture containing the (patched) output of
the call to `git diff`.
`expected_console_path` is a path to the fixture containing
the expected HTML output of the tool.
`tool_args` is a list of command line arguments to pass
to the tool. You should include the name of the tool
as the first argument.
"""
# Patch the output of `git diff`
with open(git_diff_path, encoding="utf-8") as git_diff_file:
self._set_git_diff_output(git_diff_file.read(), "")
# Create a temporary directory to hold the output HTML report
# Add a cleanup to ensure the directory gets deleted
temp_dir = tempfile.mkdtemp()
self.addCleanup(lambda: shutil.rmtree(temp_dir))
html_report_path = os.path.join(temp_dir, "diff_coverage.html")
args = tool_args + ["--html-report", html_report_path]
if css_file:
css_file = os.path.join(temp_dir, css_file)
args += ["--external-css-file", css_file]
# Execute the tool
if "diff-cover" in args[0]:
code = diff_cover_main(args)
else:
code = diff_quality_main(args)
self.assertEqual(code, expected_status)
# Check the HTML report
with open(expected_html_path, encoding="utf-8") as expected_file:
with open(html_report_path, encoding="utf-8") as html_report:
html = html_report.read()
expected = expected_file.read()
if css_file is None:
html = self._clear_css(html)
expected = self._clear_css(expected)
assert_long_str_equal(expected, html, strip=True)
return temp_dir
def _call_quality_expecting_error(
self, tool_name, expected_error, report_arg="pylint_report.txt"
):
"""
Makes calls to diff_quality that should fail to ensure
we get back the correct failure.
Takes in a string which is a tool to call and
an string which is the error you expect to see
"""
with open("git_diff_add.txt", encoding="utf-8") as git_diff_file:
self._set_git_diff_output(git_diff_file.read(), "")
argv = ["diff-quality", f"--violations={tool_name}", report_arg]
with patch("diff_cover.diff_quality_tool.LOGGER") as logger:
exit_value = diff_quality_main(argv)
logger.error.assert_called_with(expected_error)
self.assertEqual(exit_value, 1)
def _check_console_report(self,
git_diff_path,
expected_console_path,
tool_args,
expected_status=0):
"""
Verify that the tool produces the expected console report.
`git_diff_path` is a path to a fixture containing the (patched) output of
the call to `git diff`.
`expected_console_path` is a path to the fixture containing
the expected console output of the tool.
`tool_args` is a list of command line arguments to pass
to the tool. You should include the name of the tool
as the first argument.
"""
# Patch the output of `git diff`
with open(git_diff_path, encoding="utf-8") as git_diff_file:
self._set_git_diff_output(git_diff_file.read(), "")
# Capture stdout to a string buffer
string_buffer = BytesIO()
self._capture_stdout(string_buffer)
# Execute the tool
if "diff-cover" in tool_args[0]:
code = diff_cover_main(tool_args)
else:
code = diff_quality_main(tool_args)
self.assertEqual(code, expected_status)
# Check the console report
with open(expected_console_path) as expected_file:
report = string_buffer.getvalue()
expected = expected_file.read()
assert_long_str_equal(expected, report, strip=True)