chrome/browser/web_dev_style/closure_lint_test.py

   1 #!/usr/bin/env python
   2 # Copyright 2015 The Chromium Authors. All rights reserved.
   3 # Use of this source code is governed by a BSD-style license that can be
   4 # found in the LICENSE file.
   5
   6 import js_checker
   7 from os import path as os_path
   8 import re
   9 from sys import path as sys_path
  10 import unittest
  11
  12 _HERE = os_path.dirname(os_path.abspath(__file__))
  13 sys_path.append(os_path.join(_HERE, '..', '..', '..', 'tools'))
  14
  15 import find_depot_tools  # pylint: disable=W0611
  16 from testing_support.super_mox import SuperMoxTestBase
  17
  18
  19 class ClosureLintTest(SuperMoxTestBase):
  20   def setUp(self):
  21     SuperMoxTestBase.setUp(self)
  22
  23     input_api = self.mox.CreateMockAnything()
  24     input_api.os_path = os_path
  25     input_api.re = re
  26
  27     input_api.change = self.mox.CreateMockAnything()
  28     self.mox.StubOutWithMock(input_api.change, 'RepositoryRoot')
  29     src_root = os_path.join(os_path.dirname(__file__), '..', '..', '..')
  30     input_api.change.RepositoryRoot().MultipleTimes().AndReturn(src_root)
  31
  32     output_api = self.mox.CreateMockAnything()
  33
  34     self.mox.ReplayAll()
  35
  36     self.checker = js_checker.JSChecker(input_api, output_api)
  37
  38   def ShouldPassClosureLint(self, source):
  39     errors = self.checker.ClosureLint('', source=source)
  40
  41     for error in errors:
  42       print 'Error: ' + error.message
  43
  44     self.assertListEqual([], errors)
  45
  46   def testBindFalsePositives(self):
  47     sources = [
  48       [
  49         'var addOne = function(prop) {\n',
  50         '  this[prop] += 1;\n',
  51         '}.bind(counter, timer);\n',
  52         '\n',
  53         'setInterval(addOne, 1000);\n',
  54         '\n',
  55       ],
  56       [
  57         '/** Da clickz. */\n',
  58         'button.onclick = function() { this.add_(this.total_); }.bind(this);\n',
  59       ],
  60     ]
  61     for source in sources:
  62       self.ShouldPassClosureLint(source)
  63
  64   def testPromiseFalsePositives(self):
  65     sources = [
  66       [
  67         'Promise.reject(1).catch(function(error) {\n',
  68         '  alert(error);\n',
  69         '});\n',
  70       ],
  71       [
  72         'var loaded = new Promise();\n',
  73         'loaded.then(runAwesomeApp);\n',
  74         'loaded.catch(showSadFace);\n',
  75         '\n',
  76         '/** Da loadz. */\n',
  77         'document.onload = function() { loaded.resolve(); };\n',
  78         '\n',
  79         '/** Da errorz. */\n',
  80         'document.onerror = function() { loaded.reject(); };\n',
  81         '\n',
  82         "if (document.readystate == 'complete') loaded.resolve();\n",
  83       ],
  84     ]
  85     for source in sources:
  86       self.ShouldPassClosureLint(source)
  87
  88
  89 if __name__ == '__main__':
  90   unittest.main()