def test_git_diff_error(self):
# Patch the output of `git diff` to return an error
self._set_git_diff_output("", "fatal error", 1)
# Expect an error
with pytest.raises(CommandError):
diff_cover_tool.main(["diff-cover", "coverage.xml"])
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 = self.tmp_path / "dummy"
temp_dir.mkdir()
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_tool.main(args)
else:
code = diff_quality_tool.main(args)
assert 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 expected.strip() == html.strip()
return temp_dir
def pytest_unconfigure(config):
if config.option.cov_source:
print()
cov_dir = Path(__file__).parent / "coverage"
xml = str(cov_dir / "output.xml")
html = str(cov_dir / "diff.html")
exit = main(["", xml, "--html-report", html, "--fail-under", "100"])
print(f"\nHTML diff coverage showing missing lines written to {html}")
if exit != 0:
sys.exit(exit)
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_tool.main(tool_args)
else:
code = diff_quality_tool.main(tool_args)
assert code == expected_status
# Check the console report
with open(expected_console_path) as expected_file:
report = string_buffer.getvalue()
expected = expected_file.read()
assert expected.strip() == report.strip().decode("utf-8")
from diff_cover.diff_cover_tool import main main()