1 files changed, 59 insertions, 0 deletions
diff --git a/scripts/devscripts/test/test_flake8.py b/scripts/devscripts/test/test_flake8.py
new file mode 100644
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+++ b/scripts/devscripts/test/test_flake8.py
@@ -0,0 +1,59 @@
+# Copyright (C) 2017-2018, Benjamin Drung <bdrung@debian.org>
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+"""Run flake8 check."""
+
+import subprocess
+import sys
+import unittest
+
+from . import get_source_files, unittest_verbosity
+
+
+class Flake8TestCase(unittest.TestCase):
+    """
+    This unittest class provides a test that runs the flake8 code
+    checker (which combines pycodestyle and pyflakes) on the Python
+    source code. The list of source files is provided by the
+    get_source_files() function.
+    """
+
+    def test_flake8(self) -> None:
+        """Test: Run flake8 on Python source code."""
+        cmd = [
+            sys.executable,
+            "-m",
+            "flake8",
+            "--ignore=E203,W503",
+            "--max-line-length=88",
+        ] + get_source_files()
+        if unittest_verbosity() >= 2:
+            sys.stderr.write(f"Running following command:\n{' '.join(cmd)}\n")
+        process = subprocess.run(cmd, capture_output=True, check=False, text=True)
+
+        if process.returncode != 0:  # pragma: no cover
+            msgs = []
+            if process.stderr:
+                msgs.append(
+                    f"flake8 exited with code {process.returncode} and has"
+                    f" unexpected output on stderr:\n{process.stderr.rstrip()}"
+                )
+            if process.stdout:
+                msgs.append(f"flake8 found issues:\n{process.stdout.rstrip()}")
+            if not msgs:
+                msgs.append(
+                    f"flake8 exited with code {process.returncode} "
+                    "and has no output on stdout or stderr."
+                )
+            self.fail("\n".join(msgs))