1 files changed, 82 insertions, 0 deletions
diff --git a/python/mozlint/test/test_roller.py b/python/mozlint/test/test_roller.py
new file mode 100644
index 000000000..b4b82c346
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+++ b/python/mozlint/test/test_roller.py
@@ -0,0 +1,82 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+import os
+import sys
+
+import pytest
+
+from mozlint import ResultContainer
+from mozlint.errors import LintersNotConfigured, LintException
+
+
+here = os.path.abspath(os.path.dirname(__file__))
+
+
+linters = ('string.lint', 'regex.lint', 'external.lint')
+
+
+def test_roll_no_linters_configured(lint, files):
+    with pytest.raises(LintersNotConfigured):
+        lint.roll(files)
+
+
+def test_roll_successful(lint, linters, files):
+    lint.read(linters)
+
+    result = lint.roll(files)
+    assert len(result) == 1
+    assert lint.return_code == 1
+
+    path = result.keys()[0]
+    assert os.path.basename(path) == 'foobar.js'
+
+    errors = result[path]
+    assert isinstance(errors, list)
+    assert len(errors) == 6
+
+    container = errors[0]
+    assert isinstance(container, ResultContainer)
+    assert container.rule == 'no-foobar'
+
+
+def test_roll_catch_exception(lint, lintdir, files):
+    lint.read(os.path.join(lintdir, 'raises.lint'))
+
+    # suppress printed traceback from test output
+    old_stderr = sys.stderr
+    sys.stderr = open(os.devnull, 'w')
+    with pytest.raises(LintException):
+        lint.roll(files)
+    sys.stderr = old_stderr
+
+
+def test_roll_with_excluded_path(lint, linters, files):
+    lint.lintargs.update({'exclude': ['**/foobar.js']})
+
+    lint.read(linters)
+    result = lint.roll(files)
+
+    assert len(result) == 0
+    assert lint.return_code == 0
+
+
+def test_roll_with_invalid_extension(lint, lintdir, filedir):
+    lint.read(os.path.join(lintdir, 'external.lint'))
+    result = lint.roll(os.path.join(filedir, 'foobar.py'))
+    assert len(result) == 0
+    assert lint.return_code == 0
+
+
+def test_roll_with_failure_code(lint, lintdir, files):
+    lint.read(os.path.join(lintdir, 'badreturncode.lint'))
+
+    assert lint.return_code is None
+    result = lint.roll(files)
+    assert len(result) == 0
+    assert lint.return_code == 1
+
+
+if __name__ == '__main__':
+    sys.exit(pytest.main(['--verbose', __file__]))