third_party/closure_compiler/processor_test.py

   1 #!/usr/bin/env python
   2 # Copyright 2014 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 """Test resources processing, i.e. <if> and <include> tag handling."""
   7
   8 import unittest
   9 from processor import FileCache, Processor, LineNumber
  10
  11
  12 class ProcessorTest(unittest.TestCase):
  13   """Test <include> tag processing logic."""
  14
  15   def __init__(self, *args, **kwargs):
  16     unittest.TestCase.__init__(self, *args, **kwargs)
  17     self.maxDiff = None
  18
  19   def setUp(self):
  20     FileCache._cache["/debug.js"] = """
  21 // Copyright 2002 Older Chromium Author dudes.
  22 function debug(msg) { if (window.DEBUG) alert(msg); }
  23 """.strip()
  24
  25     FileCache._cache["/global.js"] = """
  26 // Copyright 2014 Old Chromium Author dudes.
  27 <include src="/debug.js">
  28 var global = 'type checking!';
  29 """.strip()
  30
  31     FileCache._cache["/checked.js"] = """
  32 // Copyright 2028 Future Chromium Author dudes.
  33 /**
  34  * @fileoverview Coolest app ever.
  35  * @author Douglas Crockford (douglas@crockford.com)
  36  */
  37 <include src="/global.js">
  38 debug(global);
  39 // Here continues checked.js, a swell file.
  40 """.strip()
  41
  42     self._processor = Processor("/checked.js")
  43
  44   def testInline(self):
  45     self.assertMultiLineEqual("""
  46 // Copyright 2028 Future Chromium Author dudes.
  47 /**
  48  * @fileoverview Coolest app ever.
  49  * @author Douglas Crockford (douglas@crockford.com)
  50  */
  51 // Copyright 2014 Old Chromium Author dudes.
  52 // Copyright 2002 Older Chromium Author dudes.
  53 function debug(msg) { if (window.DEBUG) alert(msg); }
  54 var global = 'type checking!';
  55 debug(global);
  56 // Here continues checked.js, a swell file.
  57 """.strip(), self._processor.contents)
  58
  59   def assertLineNumber(self, abs_line, expected_line):
  60     actual_line = self._processor.get_file_from_line(abs_line)
  61     self.assertEqual(expected_line.file, actual_line.file)
  62     self.assertEqual(expected_line.line_number, actual_line.line_number)
  63
  64   def testGetFileFromLine(self):
  65     """Verify that inlined files retain their original line info."""
  66     self.assertLineNumber(1, LineNumber("/checked.js", 1))
  67     self.assertLineNumber(5, LineNumber("/checked.js", 5))
  68     self.assertLineNumber(6, LineNumber("/global.js", 1))
  69     self.assertLineNumber(7, LineNumber("/debug.js", 1))
  70     self.assertLineNumber(8, LineNumber("/debug.js", 2))
  71     self.assertLineNumber(9, LineNumber("/global.js", 3))
  72     self.assertLineNumber(10, LineNumber("/checked.js", 7))
  73     self.assertLineNumber(11, LineNumber("/checked.js", 8))
  74
  75   def testIncludedFiles(self):
  76     """Verify that files are tracked correctly as they're inlined."""
  77     self.assertEquals(set(["/global.js", "/debug.js"]),
  78                       self._processor.included_files)
  79
  80
  81 class IfStrippingTest(unittest.TestCase):
  82   """Test that the contents of XML <if> blocks are stripped."""
  83
  84   def __init__(self, *args, **kwargs):
  85     unittest.TestCase.__init__(self, *args, **kwargs)
  86     self.maxDiff = None
  87
  88   def setUp(self):
  89     FileCache._cache["/century.js"] = """
  90   function getCurrentCentury() {
  91 <if expr="netscape_os">
  92     alert("Oh wow!");
  93     return "XX";
  94 </if>
  95     return "XXI";
  96   }
  97 """.strip()
  98
  99     self.processor_ = Processor("/century.js")
 100
 101   def testIfStripping(self):
 102     self.assertMultiLineEqual("""
 103   function getCurrentCentury() {
 104
 105     alert("Oh wow!");
 106     return "XX";
 107
 108     return "XXI";
 109   }
 110 """.strip(), self.processor_.contents)
 111
 112
 113 if __name__ == '__main__':
 114   unittest.main()