1 files changed, 138 insertions, 0 deletions
diff --git a/testing/web-platform/tests/tools/lint/tests/test_lint.py b/testing/web-platform/tests/tools/lint/tests/test_lint.py
new file mode 100644
index 000000000..ebca206c8
--- /dev/null
+++ b/testing/web-platform/tests/tools/lint/tests/test_lint.py
@@ -0,0 +1,138 @@
+from __future__ import unicode_literals
+
+import os
+
+import mock
+import pytest
+import six
+
+from .. import lint as lint_mod
+from ..lint import filter_whitelist_errors, parse_whitelist, lint
+
+_dummy_repo = os.path.join(os.path.dirname(__file__), "dummy")
+
+
+def _mock_lint(name):
+    wrapped = getattr(lint_mod, name)
+    return mock.patch(lint_mod.__name__ + "." + name, wraps=wrapped)
+
+
+def test_filter_whitelist_errors():
+    filtered = filter_whitelist_errors({}, '', [])
+    assert filtered == []
+
+
+def test_parse_whitelist():
+    input_buffer = six.StringIO("""
+# Comment
+CR AT EOL: svg/import/*
+CR AT EOL: streams/resources/test-utils.js
+
+INDENT TABS: .gitmodules
+INDENT TABS: app-uri/*
+INDENT TABS: svg/*
+
+TRAILING WHITESPACE: app-uri/*
+
+CONSOLE:streams/resources/test-utils.js: 12
+
+*:*.pdf
+*:resources/*
+""")
+
+    expected_data = {
+        '.gitmodules': {
+            'INDENT TABS': {None},
+        },
+        'app-uri/*': {
+            'TRAILING WHITESPACE': {None},
+            'INDENT TABS': {None},
+        },
+        'streams/resources/test-utils.js': {
+            'CONSOLE': {12},
+            'CR AT EOL': {None},
+        },
+        'svg/*': {
+            'INDENT TABS': {None},
+        },
+        'svg/import/*': {
+            'CR AT EOL': {None},
+        },
+    }
+    expected_ignored = {"*.pdf", "resources/*"}
+    data, ignored = parse_whitelist(input_buffer)
+    assert data == expected_data
+    assert ignored == expected_ignored
+
+
+def test_lint_no_files(capsys):
+    rv = lint(_dummy_repo, [], False)
+    assert rv == 0
+    out, err = capsys.readouterr()
+    assert out == ""
+    assert err == ""
+
+
+def test_lint_ignored_file(capsys):
+    with _mock_lint("check_path") as mocked_check_path:
+        with _mock_lint("check_file_contents") as mocked_check_file_contents:
+            rv = lint(_dummy_repo, ["broken_ignored.html"], False)
+            assert rv == 0
+            assert not mocked_check_path.called
+            assert not mocked_check_file_contents.called
+    out, err = capsys.readouterr()
+    assert out == ""
+    assert err == ""
+
+
+def test_lint_not_existing_file(capsys):
+    with _mock_lint("check_path") as mocked_check_path:
+        with _mock_lint("check_file_contents") as mocked_check_file_contents:
+            # really long path-linted filename
+            name = "a" * 256 + ".html"
+            rv = lint(_dummy_repo, [name], False)
+            assert rv == 0
+            assert not mocked_check_path.called
+            assert not mocked_check_file_contents.called
+    out, err = capsys.readouterr()
+    assert out == ""
+    assert err == ""
+
+
+def test_lint_passing(capsys):
+    with _mock_lint("check_path") as mocked_check_path:
+        with _mock_lint("check_file_contents") as mocked_check_file_contents:
+            rv = lint(_dummy_repo, ["okay.html"], False)
+            assert rv == 0
+            assert mocked_check_path.call_count == 1
+            assert mocked_check_file_contents.call_count == 1
+    out, err = capsys.readouterr()
+    assert out == ""
+    assert err == ""
+
+
+def test_lint_failing(capsys):
+    with _mock_lint("check_path") as mocked_check_path:
+        with _mock_lint("check_file_contents") as mocked_check_file_contents:
+            rv = lint(_dummy_repo, ["broken.html"], False)
+            assert rv == 1
+            assert mocked_check_path.call_count == 1
+            assert mocked_check_file_contents.call_count == 1
+    out, err = capsys.readouterr()
+    assert "TRAILING WHITESPACE" in out
+    assert "broken.html 1 " in out
+    assert err == ""
+
+
+def test_lint_passing_and_failing(capsys):
+    with _mock_lint("check_path") as mocked_check_path:
+        with _mock_lint("check_file_contents") as mocked_check_file_contents:
+            rv = lint(_dummy_repo, ["broken.html", "okay.html"], False)
+            assert rv == 1
+            assert mocked_check_path.call_count == 2
+            assert mocked_check_file_contents.call_count == 2
+    out, err = capsys.readouterr()
+    assert "TRAILING WHITESPACE" in out
+    assert "broken.html 1 " in out
+    assert "okay.html" not in out
+    assert err == ""