Added test for blank configuration file

jessebona · web-flow · commit 8a7142d76323 · 2019-02-02T10:38:04.000+11:00
diff --git a/tests/commands/migrate_config_test.py b/tests/commands/migrate_config_test.py
@@ -147,3 +147,12 @@ def test_migrate_config_sha_to_rev(tmpdir):
         '    rev: v1.2.0\n'
         '    hooks: []\n'
     )
+
+@pytest.mark.parametrize('contents', ('', '\n'))
+def test_empty_configuration_file_user_error(tmpdir, contents):
+    cfg = tmpdir.join(C.CONFIG_FILE)
+    cfg.write(contents)
+    with tmpdir.as_cwd():
+        assert not migrate_config(C.CONFIG_FILE)
+    # even though the config is invalid, this should be a noop
+    assert cfg.read() == contents
