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34 lines
1.4 KiB
Python
34 lines
1.4 KiB
Python
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import datetime
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from marionette_harness.runner import BrowserMobTestCase
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class TestBrowserMobProxy(BrowserMobTestCase):
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"""To run this test, you'll need to download the browsermob-proxy from
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http://bmp.lightbody.net/, and then pass the path to the startup
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script (typically /path/to/browsermob-proxy-2.0.0/bin/browsermob-proxy)
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as the --browsermob-script argument when running runtests.py.
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You can additionally pass --browsermob-port to specify the port that
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the proxy will run on; it defaults to 8080.
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This test is NOT run in CI, as bmp and dependencies aren't available
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there.
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"""
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def test_browsermob_proxy_limits(self):
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"""This illustrates the use of download limits in the proxy,
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and verifies that it's slower to load a page @100kbps
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than it is to download the same page @1000kbps.
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"""
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proxy = self.create_browsermob_proxy()
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proxy.limits({'downstream_kbps': 1000})
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time1 = datetime.datetime.now()
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self.marionette.navigate('http://forecast.weather.gov')
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time2 = datetime.datetime.now()
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proxy.limits({'downstream_kbps': 100})
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time3 = datetime.datetime.now()
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self.marionette.refresh()
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time4 = datetime.datetime.now()
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self.assertTrue(time4 - time3 > time2 - time1,
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"page load @ 100kbps not slower than page load @ 1000kbps")
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