Include hook id in output with --verbose. Closes #88.

tests/output_test.py

@@ -0,0 +1,77 @@
+import pytest
+
+from pre_commit import color
+from pre_commit.output import get_hook_message
+
+
+@pytest.mark.parametrize(
+    'kwargs',
+    (
+        # both end_msg and end_len
+        {'end_msg': 'end', 'end_len': 1, 'end_color': '', 'use_color': True},
+        # Neither end_msg nor end_len
+        {},
+        # Neither color option for end_msg
+        {'end_msg': 'end'},
+        # No use_color for end_msg
+        {'end_msg': 'end', 'end_color': ''},
+        # No end_color for end_msg
+        {'end_msg': 'end', 'use_color': ''},
+    ),
+)
+def test_get_hook_message_raises(kwargs):
+    with pytest.raises(ValueError):
+        get_hook_message('start', **kwargs)
+
+
+def test_case_with_end_len():
+    ret = get_hook_message('start', end_len=5, cols=15)
+    assert ret == 'start' + '.' * 4
+
+
+def test_case_with_end_msg():
+    ret = get_hook_message(
+        'start',
+        end_msg='end',
+        end_color='',
+        use_color=False,
+        cols=15,
+    )
+    assert ret == 'start' + '.' * 6 + 'end' + '\n'
+
+
+def test_case_with_end_msg_using_color():
+    ret = get_hook_message(
+        'start',
+        end_msg='end',
+        end_color=color.RED,
+        use_color=True,
+        cols=15,
+    )
+    assert ret == 'start' + '.' * 6 + color.RED + 'end' + color.NORMAL + '\n'
+
+
+def test_case_with_postfix_message():
+    ret = get_hook_message(
+        'start',
+        postfix='post ',
+        end_msg='end',
+        end_color='',
+        use_color=False,
+        cols=20,
+    )
+    assert ret == 'start' + '.' * 6 + 'post ' + 'end' + '\n'
+
+
+def test_make_sure_postfix_is_not_colored():
+    ret = get_hook_message(
+        'start',
+        postfix='post ',
+        end_msg='end',
+        end_color=color.RED,
+        use_color=True,
+        cols=20,
+    )
+    assert ret == (
+        'start' + '.' * 6 + 'post ' + color.RED + 'end' + color.NORMAL + '\n'
+    )