def testReadlineLimitedBasic(self):
num_bytes = 1024 * 8 + 512
bps = 384000
request_counter = lambda: 1
f = StringIO.StringIO(' ' * num_bytes)
limited_f = proxyshaper.RateLimitedFile(request_counter, f, bps)
start = proxyshaper.TIMER()
self.assertEqual(num_bytes, len(limited_f.readline()))
expected_ms = 8.0 * num_bytes / bps * 1000.0
actual_ms = (proxyshaper.TIMER() - start) * 1000.0
self.assertValuesAlmostEqual(expected_ms, actual_ms)
def testWriteLimitedBasic(self):
num_bytes = 1024 * 10 + 350
bps = 384000
request_counter = lambda: 1
f = StringIO.StringIO()
limited_f = proxyshaper.RateLimitedFile(request_counter, f, bps)
start = proxyshaper.TIMER()
limited_f.write(' ' * num_bytes)
self.assertEqual(num_bytes, len(limited_f.getvalue()))
expected_ms = 8.0 * num_bytes / bps * 1000.0
actual_ms = (proxyshaper.TIMER() - start) * 1000.0
self.assertAlmostEqual(expected_ms, actual_ms)
def testReadLimitedSlowedByMultipleRequests(self):
num_bytes = 1024
bps = 384000
request_count = 2
request_counter = lambda: request_count
f = StringIO.StringIO(' ' * num_bytes)
limited_f = proxyshaper.RateLimitedFile(request_counter, f, bps)
start = proxyshaper.TIMER()
num_read_bytes = limited_f.read()
self.assertEqual(num_bytes, len(num_read_bytes))
expected_ms = 8.0 * num_bytes / (bps / float(request_count)) * 1000.0
actual_ms = (proxyshaper.TIMER() - start) * 1000.0
self.assertValuesAlmostEqual(expected_ms, actual_ms)