Add ChromeCodingConvention.java to Closure Compiler to preserve getInstance() type

third_party/closure_compiler/coding_conventions_test.py

+#!/usr/bin/env python
+# Copyright 2014 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.
+
+import argparse
+import os
+import tempfile
+import unittest
+
+from checker import Checker
+
+
+def rel_to_abs(rel_path):

[Dan Beam, 2014/07/29 19:17:16]

unused

[Vitaly Pavlenko, 2014/07/29 20:26:18]

Done.

+  script_path = os.path.dirname(os.path.abspath(__file__))
+  return os.path.join(script_path, rel_path)
+
+
+class CodingConventionTest(unittest.TestCase):
+  def __init__(self, *args, **kwargs):
+    unittest.TestCase.__init__(self, *args, **kwargs)
+    self.maxDiff = None
+
+  def setUp(self):
+    self._checker = Checker(verbose=False, return_output=True)
+
+  def _runCheckerTest(self, config):

[Dan Beam, 2014/07/29 19:17:17]

only used once, adds more code

[Vitaly Pavlenko, 2014/07/29 20:26:19]

Done.

+    test_name = config["name"]
+    file_content = config["file"]
+    expected_output = config["expected_output"]
+
+    temp_path = tempfile.mktemp()
+    with open(temp_path, "w") as temp_file:
+      print >> temp_file, file_content

[Dan Beam, 2014/07/29 19:17:16]

just sutff the file into FileCache._cache instead of writing a temp file and
removing it (just like I did...)

[Vitaly Pavlenko, 2014/07/29 20:26:18]

Done.

+    output = self._checker.check(temp_path)
+    os.remove(temp_path)
+
+    self.assertTrue(expected_output in output,
+        msg="{}\n\nExpected line: \n{}\n\nOutput:\n{}\n".format(
+            test_name, expected_output, output))

[Dan Beam, 2014/07/29 19:17:16]

"{}".format() -> "%s" % ()

[Vitaly Pavlenko, 2014/07/29 20:26:19]

Done.

+
+  def testGetInstance(self):
+    self._runCheckerTest({
+      "name": "getInstance",
+      "file": """
+var cr = {
+  /** @param {!Function} ctor */
+  addSingletonGetter: function(ctor) {
+    ctor.getInstance = function() {
+      return ctor.instance_ || (ctor.instance_ = new ctor());
+    };
+  }
+};
+
+/** @constructor */
+function Class() {
+  /** @param {number} num */
+  this.needsNumber = function(num) {};
+}
+
+cr.addSingletonGetter(Class);
+Class.getInstance().needsNumber("wrong type");
+""",
+      "expected_output": "WARNING - actual parameter 1 of Class.needsNumber does not match formal parameter",
+    })
+
+
+if __name__ == "__main__":
+  parser = argparse.ArgumentParser()
+  parser.add_argument("-v", "--verbose", action="store_true",
+                      help="Show more information as this script runs")
+  opts = parser.parse_args()
+
+  unittest.main()