Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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254 lines
11 KiB
254 lines
11 KiB
#! /usr/bin/env python |
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# |
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# Protocol Buffers - Google's data interchange format |
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# Copyright 2008 Google Inc. All rights reserved. |
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# https://developers.google.com/protocol-buffers/ |
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# |
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# Redistribution and use in source and binary forms, with or without |
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# modification, are permitted provided that the following conditions are |
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# met: |
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# |
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# * Redistributions of source code must retain the above copyright |
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# notice, this list of conditions and the following disclaimer. |
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# * Redistributions in binary form must reproduce the above |
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# copyright notice, this list of conditions and the following disclaimer |
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# in the documentation and/or other materials provided with the |
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# distribution. |
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# * Neither the name of Google Inc. nor the names of its |
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# contributors may be used to endorse or promote products derived from |
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# this software without specific prior written permission. |
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# |
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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"""Test for google.protobuf.internal.wire_format.""" |
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__author__ = 'robinson@google.com (Will Robinson)' |
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import unittest |
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from google.protobuf import message |
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from google.protobuf.internal import wire_format |
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class WireFormatTest(unittest.TestCase): |
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def testPackTag(self): |
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field_number = 0xabc |
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tag_type = 2 |
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self.assertEqual((field_number << 3) | tag_type, |
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wire_format.PackTag(field_number, tag_type)) |
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PackTag = wire_format.PackTag |
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# Number too high. |
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self.assertRaises(message.EncodeError, PackTag, field_number, 6) |
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# Number too low. |
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self.assertRaises(message.EncodeError, PackTag, field_number, -1) |
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def testUnpackTag(self): |
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# Test field numbers that will require various varint sizes. |
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for expected_field_number in (1, 15, 16, 2047, 2048): |
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for expected_wire_type in range(6): # Highest-numbered wiretype is 5. |
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field_number, wire_type = wire_format.UnpackTag( |
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wire_format.PackTag(expected_field_number, expected_wire_type)) |
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self.assertEqual(expected_field_number, field_number) |
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self.assertEqual(expected_wire_type, wire_type) |
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self.assertRaises(TypeError, wire_format.UnpackTag, None) |
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self.assertRaises(TypeError, wire_format.UnpackTag, 'abc') |
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self.assertRaises(TypeError, wire_format.UnpackTag, 0.0) |
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self.assertRaises(TypeError, wire_format.UnpackTag, object()) |
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def testZigZagEncode(self): |
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Z = wire_format.ZigZagEncode |
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self.assertEqual(0, Z(0)) |
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self.assertEqual(1, Z(-1)) |
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self.assertEqual(2, Z(1)) |
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self.assertEqual(3, Z(-2)) |
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self.assertEqual(4, Z(2)) |
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self.assertEqual(0xfffffffe, Z(0x7fffffff)) |
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self.assertEqual(0xffffffff, Z(-0x80000000)) |
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self.assertEqual(0xfffffffffffffffe, Z(0x7fffffffffffffff)) |
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self.assertEqual(0xffffffffffffffff, Z(-0x8000000000000000)) |
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self.assertRaises(TypeError, Z, None) |
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self.assertRaises(TypeError, Z, 'abcd') |
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self.assertRaises(TypeError, Z, 0.0) |
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self.assertRaises(TypeError, Z, object()) |
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def testZigZagDecode(self): |
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Z = wire_format.ZigZagDecode |
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self.assertEqual(0, Z(0)) |
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self.assertEqual(-1, Z(1)) |
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self.assertEqual(1, Z(2)) |
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self.assertEqual(-2, Z(3)) |
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self.assertEqual(2, Z(4)) |
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self.assertEqual(0x7fffffff, Z(0xfffffffe)) |
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self.assertEqual(-0x80000000, Z(0xffffffff)) |
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self.assertEqual(0x7fffffffffffffff, Z(0xfffffffffffffffe)) |
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self.assertEqual(-0x8000000000000000, Z(0xffffffffffffffff)) |
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self.assertRaises(TypeError, Z, None) |
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self.assertRaises(TypeError, Z, 'abcd') |
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self.assertRaises(TypeError, Z, 0.0) |
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self.assertRaises(TypeError, Z, object()) |
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def NumericByteSizeTestHelper(self, byte_size_fn, value, expected_value_size): |
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# Use field numbers that cause various byte sizes for the tag information. |
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for field_number, tag_bytes in ((15, 1), (16, 2), (2047, 2), (2048, 3)): |
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expected_size = expected_value_size + tag_bytes |
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actual_size = byte_size_fn(field_number, value) |
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self.assertEqual(expected_size, actual_size, |
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'byte_size_fn: %s, field_number: %d, value: %r\n' |
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'Expected: %d, Actual: %d'% ( |
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byte_size_fn, field_number, value, expected_size, actual_size)) |
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def testByteSizeFunctions(self): |
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# Test all numeric *ByteSize() functions. |
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NUMERIC_ARGS = [ |
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# Int32ByteSize(). |
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[wire_format.Int32ByteSize, 0, 1], |
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[wire_format.Int32ByteSize, 127, 1], |
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[wire_format.Int32ByteSize, 128, 2], |
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[wire_format.Int32ByteSize, -1, 10], |
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# Int64ByteSize(). |
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[wire_format.Int64ByteSize, 0, 1], |
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[wire_format.Int64ByteSize, 127, 1], |
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[wire_format.Int64ByteSize, 128, 2], |
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[wire_format.Int64ByteSize, -1, 10], |
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# UInt32ByteSize(). |
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[wire_format.UInt32ByteSize, 0, 1], |
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[wire_format.UInt32ByteSize, 127, 1], |
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[wire_format.UInt32ByteSize, 128, 2], |
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[wire_format.UInt32ByteSize, wire_format.UINT32_MAX, 5], |
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# UInt64ByteSize(). |
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[wire_format.UInt64ByteSize, 0, 1], |
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[wire_format.UInt64ByteSize, 127, 1], |
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[wire_format.UInt64ByteSize, 128, 2], |
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[wire_format.UInt64ByteSize, wire_format.UINT64_MAX, 10], |
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# SInt32ByteSize(). |
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[wire_format.SInt32ByteSize, 0, 1], |
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[wire_format.SInt32ByteSize, -1, 1], |
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[wire_format.SInt32ByteSize, 1, 1], |
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[wire_format.SInt32ByteSize, -63, 1], |
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[wire_format.SInt32ByteSize, 63, 1], |
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[wire_format.SInt32ByteSize, -64, 1], |
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[wire_format.SInt32ByteSize, 64, 2], |
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# SInt64ByteSize(). |
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[wire_format.SInt64ByteSize, 0, 1], |
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[wire_format.SInt64ByteSize, -1, 1], |
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[wire_format.SInt64ByteSize, 1, 1], |
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[wire_format.SInt64ByteSize, -63, 1], |
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[wire_format.SInt64ByteSize, 63, 1], |
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[wire_format.SInt64ByteSize, -64, 1], |
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[wire_format.SInt64ByteSize, 64, 2], |
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# Fixed32ByteSize(). |
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[wire_format.Fixed32ByteSize, 0, 4], |
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[wire_format.Fixed32ByteSize, wire_format.UINT32_MAX, 4], |
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# Fixed64ByteSize(). |
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[wire_format.Fixed64ByteSize, 0, 8], |
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[wire_format.Fixed64ByteSize, wire_format.UINT64_MAX, 8], |
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# SFixed32ByteSize(). |
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[wire_format.SFixed32ByteSize, 0, 4], |
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[wire_format.SFixed32ByteSize, wire_format.INT32_MIN, 4], |
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[wire_format.SFixed32ByteSize, wire_format.INT32_MAX, 4], |
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# SFixed64ByteSize(). |
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[wire_format.SFixed64ByteSize, 0, 8], |
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[wire_format.SFixed64ByteSize, wire_format.INT64_MIN, 8], |
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[wire_format.SFixed64ByteSize, wire_format.INT64_MAX, 8], |
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# FloatByteSize(). |
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[wire_format.FloatByteSize, 0.0, 4], |
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[wire_format.FloatByteSize, 1000000000.0, 4], |
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[wire_format.FloatByteSize, -1000000000.0, 4], |
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# DoubleByteSize(). |
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[wire_format.DoubleByteSize, 0.0, 8], |
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[wire_format.DoubleByteSize, 1000000000.0, 8], |
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[wire_format.DoubleByteSize, -1000000000.0, 8], |
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# BoolByteSize(). |
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[wire_format.BoolByteSize, False, 1], |
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[wire_format.BoolByteSize, True, 1], |
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# EnumByteSize(). |
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[wire_format.EnumByteSize, 0, 1], |
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[wire_format.EnumByteSize, 127, 1], |
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[wire_format.EnumByteSize, 128, 2], |
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[wire_format.EnumByteSize, wire_format.UINT32_MAX, 5], |
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] |
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for args in NUMERIC_ARGS: |
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self.NumericByteSizeTestHelper(*args) |
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# Test strings and bytes. |
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for byte_size_fn in (wire_format.StringByteSize, wire_format.BytesByteSize): |
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# 1 byte for tag, 1 byte for length, 3 bytes for contents. |
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self.assertEqual(5, byte_size_fn(10, 'abc')) |
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# 2 bytes for tag, 1 byte for length, 3 bytes for contents. |
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self.assertEqual(6, byte_size_fn(16, 'abc')) |
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# 2 bytes for tag, 2 bytes for length, 128 bytes for contents. |
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self.assertEqual(132, byte_size_fn(16, 'a' * 128)) |
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# Test UTF-8 string byte size calculation. |
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# 1 byte for tag, 1 byte for length, 8 bytes for content. |
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self.assertEqual(10, wire_format.StringByteSize( |
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5, b'\xd0\xa2\xd0\xb5\xd1\x81\xd1\x82'.decode('utf-8'))) |
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class MockMessage(object): |
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def __init__(self, byte_size): |
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self.byte_size = byte_size |
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def ByteSize(self): |
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return self.byte_size |
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message_byte_size = 10 |
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mock_message = MockMessage(byte_size=message_byte_size) |
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# Test groups. |
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# (2 * 1) bytes for begin and end tags, plus message_byte_size. |
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self.assertEqual(2 + message_byte_size, |
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wire_format.GroupByteSize(1, mock_message)) |
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# (2 * 2) bytes for begin and end tags, plus message_byte_size. |
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self.assertEqual(4 + message_byte_size, |
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wire_format.GroupByteSize(16, mock_message)) |
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# Test messages. |
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# 1 byte for tag, plus 1 byte for length, plus contents. |
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self.assertEqual(2 + mock_message.byte_size, |
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wire_format.MessageByteSize(1, mock_message)) |
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# 2 bytes for tag, plus 1 byte for length, plus contents. |
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self.assertEqual(3 + mock_message.byte_size, |
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wire_format.MessageByteSize(16, mock_message)) |
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# 2 bytes for tag, plus 2 bytes for length, plus contents. |
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mock_message.byte_size = 128 |
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self.assertEqual(4 + mock_message.byte_size, |
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wire_format.MessageByteSize(16, mock_message)) |
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# Test message set item byte size. |
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# 4 bytes for tags, plus 1 byte for length, plus 1 byte for type_id, |
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# plus contents. |
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mock_message.byte_size = 10 |
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self.assertEqual(mock_message.byte_size + 6, |
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wire_format.MessageSetItemByteSize(1, mock_message)) |
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# 4 bytes for tags, plus 2 bytes for length, plus 1 byte for type_id, |
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# plus contents. |
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mock_message.byte_size = 128 |
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self.assertEqual(mock_message.byte_size + 7, |
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wire_format.MessageSetItemByteSize(1, mock_message)) |
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# 4 bytes for tags, plus 2 bytes for length, plus 2 byte for type_id, |
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# plus contents. |
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self.assertEqual(mock_message.byte_size + 8, |
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wire_format.MessageSetItemByteSize(128, mock_message)) |
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# Too-long varint. |
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self.assertRaises(message.EncodeError, |
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wire_format.UInt64ByteSize, 1, 1 << 128) |
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if __name__ == '__main__': |
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unittest.main()
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