test handling of command exec errors

This adds a test for common command exec errors when checking out
repositories. The test checks if the correct error is thrown
(CommandExecError) instead of failing silently or with an
unspecific exception.

Signed-off-by: Felix Moessbauer <felix.moessbauer@siemens.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>

tests/test_commands.py

@@ -26,7 +26,9 @@ import pathlib
 import shutil
 import json
 import yaml
+import pytest
 from kas import kas
+from kas.kasusererror import CommandExecError
 
 
 def test_for_all_repos(changedir, tmpdir):
@@ -61,6 +63,14 @@ def test_checkout(changedir, tmpdir):
     assert not os.path.exists('build/sstate-cache')
 
 
+def test_invalid_checkout(changedir, tmpdir, capsys):
+    tdir = str(tmpdir / 'test_commands')
+    shutil.copytree('tests/test_commands', tdir)
+    os.chdir(tdir)
+    with pytest.raises(CommandExecError):
+        kas.kas(['checkout', 'test-invalid.yml'])
+
+
 def test_checkout_create_refs(changedir, tmpdir):
     tdir = str(tmpdir / 'test_commands')
     repo_cache = pathlib.Path(str(tmpdir.mkdir('repos')))

tests/test_commands/test-invalid.yml

@@ -0,0 +1,7 @@
+header:
+  version: 8
+
+repos:
+  kas_invalid:
+    url: https://example.com/kas.git
+    refspec: this-ref-is-invalid