Added unit tests for the Dart Chrome.* API wrappers.

tools/json_schema_compiler/dart_generator_test.py

+#!/usr/bin/env python
+# Copyright (c) 2012 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 os
+import sys
+import unittest
+import glob
+
+from dart_generator import DartGenerator
+from compiler import GenerateSchema
+
+# If --rebase is passed to this test, this is set to True, indicating the test
+# output should be re-generated for each test (rather than running the tests
+# themselves).
+REBASE_MODE = False
+
+# The directory containing the input and expected output files corresponding
+# to each test name.
+TESTS_DIR = 'dart_test'
+
+class DartTest(unittest.TestCase):
+
+  def _RunTest(self, test_filename):
+    '''Given the name of a test, runs compiler.py on the file:
+      TESTS_DIR/test_filename.idl
+    and compares it to the output in the file:
+      TESTS_DIR/test_filename.dart
+    '''
+    file_rel = os.path.join(TESTS_DIR, test_filename)
+
+    output_dir = None
+    if REBASE_MODE:
+      output_dir = TESTS_DIR
+    output_code = GenerateSchema('dart', ['%s.idl' % file_rel], TESTS_DIR,
+                                 output_dir, None, None)
+
+    if not REBASE_MODE:
+      with open('%s.dart' % file_rel) as f:
+        expected_output = f.read()
+      # Remove the first line of the output code (as it contains the filename).
+      # Also remove all blank lines, ignoring them from the comparison.
+      # Compare with lists instead of strings for clearer diffs (especially with
+      # whitespace) when a test fails.
+      self.assertEqual([l for l in expected_output.split('\n') if l],
+                       [l for l in output_code.split('\n')[1:] if l])
+
+  def setUp(self):
+    # Increase the maximum diff amount to see the full diff on a failed test.
+    self.maxDiff = 2000
+
+  def testBasicEvent(self):
+    self._RunTest('basic_event')
+
+  def testBasicFunction(self):
+    self._RunTest('basic_function')
+
+  def testBasicType(self):
+    self._RunTest('basic_type')
+
+  def testComments(self):
+    self._RunTest('comments')
+
+  def testComplexType(self):
+    self._RunTest('complex_type')
+
+  def testEmptyNamespace(self):
+    self._RunTest('empty_namespace')
+
+  def testEmptyType(self):
+    self._RunTest('empty_type')
+
+  def testOpratableType(self):
+    self._RunTest('operatable_type')
+
+  def testTags(self):
+    self._RunTest('tags')
+
+if __name__ == '__main__':
+  if '--rebase' in sys.argv:
+    print "Running in rebase mode."
+    REBASE_MODE = True
+    sys.argv.remove('--rebase')
+  unittest.main()