1#!/usr/bin/python 2# Copyright (C) 2010 Google Inc. All rights reserved. 3# 4# Redistribution and use in source and binary forms, with or without 5# modification, are permitted provided that the following conditions are 6# met: 7# 8# * Redistributions of source code must retain the above copyright 9# notice, this list of conditions and the following disclaimer. 10# * Redistributions in binary form must reproduce the above 11# copyright notice, this list of conditions and the following disclaimer 12# in the documentation and/or other materials provided with the 13# distribution. 14# * Neither the name of Google Inc. nor the names of its 15# contributors may be used to endorse or promote products derived from 16# this software without specific prior written permission. 17# 18# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 30"""Unit tests for metered_stream.py.""" 31 32import os 33import optparse 34import pdb 35import sys 36import unittest 37 38from webkitpy.common.array_stream import ArrayStream 39from webkitpy.layout_tests.layout_package import metered_stream 40 41 42class TestMeteredStream(unittest.TestCase): 43 def test_regular(self): 44 a = ArrayStream() 45 m = metered_stream.MeteredStream(verbose=False, stream=a) 46 self.assertTrue(a.empty()) 47 48 # basic test - note that the flush() is a no-op, but we include it 49 # for coverage. 50 m.write("foo") 51 m.flush() 52 exp = ['foo'] 53 self.assertEquals(a.get(), exp) 54 55 # now check that a second write() does not overwrite the first. 56 m.write("bar") 57 exp.append('bar') 58 self.assertEquals(a.get(), exp) 59 60 m.update("batter") 61 exp.append('batter') 62 self.assertEquals(a.get(), exp) 63 64 # The next update() should overwrite the laste update() but not the 65 # other text. Note that the cursor is effectively positioned at the 66 # end of 'foo', even though we had to erase three more characters. 67 m.update("foo") 68 exp.append('\b\b\b\b\b\b \b\b\b\b\b\b') 69 exp.append('foo') 70 self.assertEquals(a.get(), exp) 71 72 m.progress("progress") 73 exp.append('\b\b\b \b\b\b') 74 exp.append('progress') 75 self.assertEquals(a.get(), exp) 76 77 # now check that a write() does overwrite the progress bar 78 m.write("foo") 79 exp.append('\b\b\b\b\b\b\b\b \b\b\b\b\b\b\b\b') 80 exp.append('foo') 81 self.assertEquals(a.get(), exp) 82 83 # Now test that we only back up to the most recent newline. 84 85 # Note also that we do not back up to erase the most recent write(), 86 # i.e., write()s do not get erased. 87 a.reset() 88 m.update("foo\nbar") 89 m.update("baz") 90 self.assertEquals(a.get(), ['foo\nbar', '\b\b\b \b\b\b', 'baz']) 91 92 def test_verbose(self): 93 a = ArrayStream() 94 m = metered_stream.MeteredStream(verbose=True, stream=a) 95 self.assertTrue(a.empty()) 96 m.write("foo") 97 self.assertEquals(a.get(), ['foo']) 98 99 import logging 100 b = ArrayStream() 101 logger = logging.getLogger() 102 handler = logging.StreamHandler(b) 103 logger.addHandler(handler) 104 m.update("bar") 105 logger.handlers.remove(handler) 106 self.assertEquals(a.get(), ['foo']) 107 self.assertEquals(b.get(), ['bar\n']) 108 109 m.progress("dropped") 110 self.assertEquals(a.get(), ['foo']) 111 self.assertEquals(b.get(), ['bar\n']) 112 113 114if __name__ == '__main__': 115 unittest.main() 116