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# Copyright 2015 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 unittest
import fieldtrial_util
import os
import tempfile
class FieldTrialUtilUnittest(unittest.TestCase):
def runGenerateArgs(self, config, platform):
result = None
with tempfile.NamedTemporaryFile('w', delete=False) as base_file:
try:
base_file.write(config)
base_file.close()
result = fieldtrial_util.GenerateArgs(base_file.name, platform)
finally:
os.unlink(base_file.name)
return result
def test_GenArgsEmptyPaths(self):
args = fieldtrial_util.GenerateArgs('', 'linux')
self.assertEqual([], args)
def test_GenArgsOneConfig(self):
config = '''{
"BrowserBlackList": [
{
"platforms": ["win"],
"experiments": [{"name": "Enabled"}]
}
],
"SimpleParams": [
{
"platforms": ["win"],
"experiments": [
{
"name": "Default",
"params": {"id": "abc"},
"enable_features": ["a", "b"]
}
]
}
],
"c": [
{
"platforms": ["win"],
"experiments": [
{
"name": "d.",
"params": {"url": "http://www.google.com"},
"enable_features": ["x"],
"disable_features": ["y"]
}
]
}
]
}'''
result = self.runGenerateArgs(config, 'win')
self.assertEqual(['--force-fieldtrials='
'BrowserBlackList/Enabled/SimpleParams/Default/c/d.',
'--force-fieldtrial-params='
'SimpleParams.Default:id/abc,'
'c.d%2E:url/http%3A%2F%2Fwww%2Egoogle%2Ecom',
'--enable-features=a,b,x',
'--disable-features=y'], result)
def test_DuplicateEnableFeatures(self):
config = '''{
"X": [
{
"platforms": ["win"],
"experiments": [
{
"name": "x",
"enable_features": ["x"]
}
]
}
],
"Y": [
{
"platforms": ["win"],
"experiments": [
{
"name": "Default",
"enable_features": ["x", "y"]
}
]
}
]
}'''
with self.assertRaises(Exception) as raised:
self.runGenerateArgs(config, 'win')
self.assertEqual('Duplicate feature(s) in enable_features: x',
str(raised.exception))
def test_DuplicateDisableFeatures(self):
config = '''{
"X": [
{
"platforms": ["win"],
"experiments": [
{
"name": "x",
"enable_features": ["y", "z"]
}
]
}
],
"Y": [
{
"platforms": ["win"],
"experiments": [
{
"name": "Default",
"enable_features": ["z", "x", "y"]
}
]
}
]
}'''
with self.assertRaises(Exception) as raised:
self.runGenerateArgs(config, 'win')
self.assertEqual('Duplicate feature(s) in enable_features: y, z',
str(raised.exception))
def test_DuplicateEnableDisable(self):
config = '''{
"X": [
{
"platforms": ["win"],
"experiments": [
{
"name": "x",
"enable_features": ["x"]
}
]
}
],
"Y": [
{
"platforms": ["win"],
"experiments": [
{
"name": "Default",
"disable_features": ["x", "y"]
}
]
}
]
}'''
with self.assertRaises(Exception) as raised:
self.runGenerateArgs(config, 'win')
self.assertEqual('Conflicting features set as both enabled and disabled: x',
str(raised.exception))
if __name__ == '__main__':
unittest.main()
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