Add WPTEXPORT footer automatically in DepsUpdater and imported/PRESUBMIT

third_party/WebKit/LayoutTests/imported/PRESUBMIT_test.py

Index: third_party/WebKit/LayoutTests/imported/PRESUBMIT_test.py
diff --git a/third_party/WebKit/LayoutTests/imported/PRESUBMIT_test.py b/third_party/WebKit/LayoutTests/imported/PRESUBMIT_test.py
new file mode 100644
index 0000000000000000000000000000000000000000..baaf9cf814cd078ac340c24143f4e2e8e3aff727
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/imported/PRESUBMIT_test.py
@@ -0,0 +1,51 @@
+# Copyright (c) 2016 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+from PRESUBMIT import PostUploadHook
+import unittest
+# TODO: how to run the tests so this is imported correctly?

[foolip, 2016/11/17 09:59:14]

TODO(jeffcarp)

+# from PRESUBMIT_test_mocks import MockOutputApi  # pylint: disable=F0401

[qyearsley, 2016/11/17 00:23:27]

I think you'd have to add something to the effect of:

sys.path.append(os.path.join('..', '..', '..', '..'))

Does that work? (Also, the `import unittest` would usually go at the top I
think)

+
+
+class PresubmitTest(unittest.TestCase):
+
+    def test_adds_WPTEXPORT_true_if_not_exists(self):
+        mock['description'] = 'mock description'
+        PostUploadHook(MockCL(), None, MockOutputAPI())
+        self.assertIn('WPTEXPORT=true', mock['description'])
+
+    def test_doesnt_add_WPTEXPORT_if_exists(self):
+        mock['description'] = 'mock description\nWPTEXPORT=false'
+        PostUploadHook(MockCL(), None, MockOutputAPI())
+        self.assertIn('WPTEXPORT=false', mock['description'])
+
+
+# TODO: Couldn't figure out how to mock this without using a global variable

[qyearsley, 2016/11/17 00:23:27]

How about making the MockCL constructor take a description - then the above
methods would look more like:

    def test_doesnt_add_WPTEXPORT_if_exists(self):
        mock_cl = MockCL(description='mock description\nWPTEXPORT=false')
        PostUploadHook(mock_cl, None, MockOutputAPI())
        self.assertIn('WPTEXPORT=false', mock_cl.description)

+mock = { 'description': '' }
+
+
+class MockCL(object):
+    # TODO(jeffcarp): add to PRESUBMIT_test_mocks
+
+    def __init__(self):
+        self.issue = 'mock issue'
+
+    class RpcServer(object):
+
+        def get_description(self, _issue):
+            return mock['description']
+
+        def update_description(self, _issue, description):
+            mock['description'] = description
+
+
+class MockOutputAPI():
+
+    def PresubmitNotifyResult(self, description):
+        return description
+
+
+if __name__ == '__main__':
+    unittest.main()
+