diff options
Diffstat (limited to 'java/compatibility_tests/v2.5.0/tests/src/main/java/com/google/protobuf/test/CodedOutputStreamTest.java')
-rw-r--r-- | java/compatibility_tests/v2.5.0/tests/src/main/java/com/google/protobuf/test/CodedOutputStreamTest.java | 318 |
1 files changed, 318 insertions, 0 deletions
diff --git a/java/compatibility_tests/v2.5.0/tests/src/main/java/com/google/protobuf/test/CodedOutputStreamTest.java b/java/compatibility_tests/v2.5.0/tests/src/main/java/com/google/protobuf/test/CodedOutputStreamTest.java new file mode 100644 index 00000000..354d89d6 --- /dev/null +++ b/java/compatibility_tests/v2.5.0/tests/src/main/java/com/google/protobuf/test/CodedOutputStreamTest.java @@ -0,0 +1,318 @@ +// Protocol Buffers - Google's data interchange format +// Copyright 2008 Google Inc. All rights reserved. +// http://code.google.com/p/protobuf/ +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +package com.google.protobuf.test; +import com.google.protobuf.*; + +import protobuf_unittest.UnittestProto.SparseEnumMessage; +import protobuf_unittest.UnittestProto.TestAllTypes; +import protobuf_unittest.UnittestProto.TestPackedTypes; +import protobuf_unittest.UnittestProto.TestSparseEnum; + +import junit.framework.TestCase; + +import java.io.ByteArrayOutputStream; +import java.util.ArrayList; +import java.util.List; + +/** + * Unit test for {@link CodedOutputStream}. + * + * @author kenton@google.com Kenton Varda + */ +public class CodedOutputStreamTest extends TestCase { + /** + * Helper to construct a byte array from a bunch of bytes. The inputs are + * actually ints so that I can use hex notation and not get stupid errors + * about precision. + */ + private byte[] bytes(int... bytesAsInts) { + byte[] bytes = new byte[bytesAsInts.length]; + for (int i = 0; i < bytesAsInts.length; i++) { + bytes[i] = (byte) bytesAsInts[i]; + } + return bytes; + } + + /** Arrays.asList() does not work with arrays of primitives. :( */ + private List<Byte> toList(byte[] bytes) { + List<Byte> result = new ArrayList<Byte>(); + for (byte b : bytes) { + result.add(b); + } + return result; + } + + private void assertEqualBytes(byte[] a, byte[] b) { + assertEquals(toList(a), toList(b)); + } + + /** + * Writes the given value using writeRawVarint32() and writeRawVarint64() and + * checks that the result matches the given bytes. + */ + private void assertWriteVarint(byte[] data, long value) throws Exception { + // Only do 32-bit write if the value fits in 32 bits. + if ((value >>> 32) == 0) { + ByteArrayOutputStream rawOutput = new ByteArrayOutputStream(); + CodedOutputStream output = CodedOutputStream.newInstance(rawOutput); + output.writeRawVarint32((int) value); + output.flush(); + assertEqualBytes(data, rawOutput.toByteArray()); + + // Also try computing size. + assertEquals(data.length, + CodedOutputStream.computeRawVarint32Size((int) value)); + } + + { + ByteArrayOutputStream rawOutput = new ByteArrayOutputStream(); + CodedOutputStream output = CodedOutputStream.newInstance(rawOutput); + output.writeRawVarint64(value); + output.flush(); + assertEqualBytes(data, rawOutput.toByteArray()); + + // Also try computing size. + assertEquals(data.length, + CodedOutputStream.computeRawVarint64Size(value)); + } + + // Try different block sizes. + for (int blockSize = 1; blockSize <= 16; blockSize *= 2) { + // Only do 32-bit write if the value fits in 32 bits. + if ((value >>> 32) == 0) { + ByteArrayOutputStream rawOutput = new ByteArrayOutputStream(); + CodedOutputStream output = + CodedOutputStream.newInstance(rawOutput, blockSize); + output.writeRawVarint32((int) value); + output.flush(); + assertEqualBytes(data, rawOutput.toByteArray()); + } + + { + ByteArrayOutputStream rawOutput = new ByteArrayOutputStream(); + CodedOutputStream output = + CodedOutputStream.newInstance(rawOutput, blockSize); + output.writeRawVarint64(value); + output.flush(); + assertEqualBytes(data, rawOutput.toByteArray()); + } + } + } + + /** Tests writeRawVarint32() and writeRawVarint64(). */ + public void testWriteVarint() throws Exception { + assertWriteVarint(bytes(0x00), 0); + assertWriteVarint(bytes(0x01), 1); + assertWriteVarint(bytes(0x7f), 127); + // 14882 + assertWriteVarint(bytes(0xa2, 0x74), (0x22 << 0) | (0x74 << 7)); + // 2961488830 + assertWriteVarint(bytes(0xbe, 0xf7, 0x92, 0x84, 0x0b), + (0x3e << 0) | (0x77 << 7) | (0x12 << 14) | (0x04 << 21) | + (0x0bL << 28)); + + // 64-bit + // 7256456126 + assertWriteVarint(bytes(0xbe, 0xf7, 0x92, 0x84, 0x1b), + (0x3e << 0) | (0x77 << 7) | (0x12 << 14) | (0x04 << 21) | + (0x1bL << 28)); + // 41256202580718336 + assertWriteVarint( + bytes(0x80, 0xe6, 0xeb, 0x9c, 0xc3, 0xc9, 0xa4, 0x49), + (0x00 << 0) | (0x66 << 7) | (0x6b << 14) | (0x1c << 21) | + (0x43L << 28) | (0x49L << 35) | (0x24L << 42) | (0x49L << 49)); + // 11964378330978735131 + assertWriteVarint( + bytes(0x9b, 0xa8, 0xf9, 0xc2, 0xbb, 0xd6, 0x80, 0x85, 0xa6, 0x01), + (0x1b << 0) | (0x28 << 7) | (0x79 << 14) | (0x42 << 21) | + (0x3bL << 28) | (0x56L << 35) | (0x00L << 42) | + (0x05L << 49) | (0x26L << 56) | (0x01L << 63)); + } + + /** + * Parses the given bytes using writeRawLittleEndian32() and checks + * that the result matches the given value. + */ + private void assertWriteLittleEndian32(byte[] data, int value) + throws Exception { + ByteArrayOutputStream rawOutput = new ByteArrayOutputStream(); + CodedOutputStream output = CodedOutputStream.newInstance(rawOutput); + output.writeRawLittleEndian32(value); + output.flush(); + assertEqualBytes(data, rawOutput.toByteArray()); + + // Try different block sizes. + for (int blockSize = 1; blockSize <= 16; blockSize *= 2) { + rawOutput = new ByteArrayOutputStream(); + output = CodedOutputStream.newInstance(rawOutput, blockSize); + output.writeRawLittleEndian32(value); + output.flush(); + assertEqualBytes(data, rawOutput.toByteArray()); + } + } + + /** + * Parses the given bytes using writeRawLittleEndian64() and checks + * that the result matches the given value. + */ + private void assertWriteLittleEndian64(byte[] data, long value) + throws Exception { + ByteArrayOutputStream rawOutput = new ByteArrayOutputStream(); + CodedOutputStream output = CodedOutputStream.newInstance(rawOutput); + output.writeRawLittleEndian64(value); + output.flush(); + assertEqualBytes(data, rawOutput.toByteArray()); + + // Try different block sizes. + for (int blockSize = 1; blockSize <= 16; blockSize *= 2) { + rawOutput = new ByteArrayOutputStream(); + output = CodedOutputStream.newInstance(rawOutput, blockSize); + output.writeRawLittleEndian64(value); + output.flush(); + assertEqualBytes(data, rawOutput.toByteArray()); + } + } + + /** Tests writeRawLittleEndian32() and writeRawLittleEndian64(). */ + public void testWriteLittleEndian() throws Exception { + assertWriteLittleEndian32(bytes(0x78, 0x56, 0x34, 0x12), 0x12345678); + assertWriteLittleEndian32(bytes(0xf0, 0xde, 0xbc, 0x9a), 0x9abcdef0); + + assertWriteLittleEndian64( + bytes(0xf0, 0xde, 0xbc, 0x9a, 0x78, 0x56, 0x34, 0x12), + 0x123456789abcdef0L); + assertWriteLittleEndian64( + bytes(0x78, 0x56, 0x34, 0x12, 0xf0, 0xde, 0xbc, 0x9a), + 0x9abcdef012345678L); + } + + /** Test encodeZigZag32() and encodeZigZag64(). */ + public void testEncodeZigZag() throws Exception { + assertEquals(0, CodedOutputStream.encodeZigZag32( 0)); + assertEquals(1, CodedOutputStream.encodeZigZag32(-1)); + assertEquals(2, CodedOutputStream.encodeZigZag32( 1)); + assertEquals(3, CodedOutputStream.encodeZigZag32(-2)); + assertEquals(0x7FFFFFFE, CodedOutputStream.encodeZigZag32(0x3FFFFFFF)); + assertEquals(0x7FFFFFFF, CodedOutputStream.encodeZigZag32(0xC0000000)); + assertEquals(0xFFFFFFFE, CodedOutputStream.encodeZigZag32(0x7FFFFFFF)); + assertEquals(0xFFFFFFFF, CodedOutputStream.encodeZigZag32(0x80000000)); + + assertEquals(0, CodedOutputStream.encodeZigZag64( 0)); + assertEquals(1, CodedOutputStream.encodeZigZag64(-1)); + assertEquals(2, CodedOutputStream.encodeZigZag64( 1)); + assertEquals(3, CodedOutputStream.encodeZigZag64(-2)); + assertEquals(0x000000007FFFFFFEL, + CodedOutputStream.encodeZigZag64(0x000000003FFFFFFFL)); + assertEquals(0x000000007FFFFFFFL, + CodedOutputStream.encodeZigZag64(0xFFFFFFFFC0000000L)); + assertEquals(0x00000000FFFFFFFEL, + CodedOutputStream.encodeZigZag64(0x000000007FFFFFFFL)); + assertEquals(0x00000000FFFFFFFFL, + CodedOutputStream.encodeZigZag64(0xFFFFFFFF80000000L)); + assertEquals(0xFFFFFFFFFFFFFFFEL, + CodedOutputStream.encodeZigZag64(0x7FFFFFFFFFFFFFFFL)); + assertEquals(0xFFFFFFFFFFFFFFFFL, + CodedOutputStream.encodeZigZag64(0x8000000000000000L)); + + // Some easier-to-verify round-trip tests. The inputs (other than 0, 1, -1) + // were chosen semi-randomly via keyboard bashing. + assertEquals(0, + CodedOutputStream.encodeZigZag32(CodedInputStream.decodeZigZag32(0))); + assertEquals(1, + CodedOutputStream.encodeZigZag32(CodedInputStream.decodeZigZag32(1))); + assertEquals(-1, + CodedOutputStream.encodeZigZag32(CodedInputStream.decodeZigZag32(-1))); + assertEquals(14927, + CodedOutputStream.encodeZigZag32(CodedInputStream.decodeZigZag32(14927))); + assertEquals(-3612, + CodedOutputStream.encodeZigZag32(CodedInputStream.decodeZigZag32(-3612))); + + assertEquals(0, + CodedOutputStream.encodeZigZag64(CodedInputStream.decodeZigZag64(0))); + assertEquals(1, + CodedOutputStream.encodeZigZag64(CodedInputStream.decodeZigZag64(1))); + assertEquals(-1, + CodedOutputStream.encodeZigZag64(CodedInputStream.decodeZigZag64(-1))); + assertEquals(14927, + CodedOutputStream.encodeZigZag64(CodedInputStream.decodeZigZag64(14927))); + assertEquals(-3612, + CodedOutputStream.encodeZigZag64(CodedInputStream.decodeZigZag64(-3612))); + + assertEquals(856912304801416L, + CodedOutputStream.encodeZigZag64( + CodedInputStream.decodeZigZag64( + 856912304801416L))); + assertEquals(-75123905439571256L, + CodedOutputStream.encodeZigZag64( + CodedInputStream.decodeZigZag64( + -75123905439571256L))); + } + + /** Tests writing a whole message with every field type. */ + public void testWriteWholeMessage() throws Exception { + TestAllTypes message = TestUtil.getAllSet(); + + byte[] rawBytes = message.toByteArray(); + assertEqualBytes(TestUtil.getGoldenMessage().toByteArray(), rawBytes); + + // Try different block sizes. + for (int blockSize = 1; blockSize < 256; blockSize *= 2) { + ByteArrayOutputStream rawOutput = new ByteArrayOutputStream(); + CodedOutputStream output = + CodedOutputStream.newInstance(rawOutput, blockSize); + message.writeTo(output); + output.flush(); + assertEqualBytes(rawBytes, rawOutput.toByteArray()); + } + } + + /** Tests writing a whole message with every packed field type. Ensures the + * wire format of packed fields is compatible with C++. */ + public void testWriteWholePackedFieldsMessage() throws Exception { + TestPackedTypes message = TestUtil.getPackedSet(); + + byte[] rawBytes = message.toByteArray(); + assertEqualBytes(TestUtil.getGoldenPackedFieldsMessage().toByteArray(), + rawBytes); + } + + /** Test writing a message containing a negative enum value. This used to + * fail because the size was not properly computed as a sign-extended varint. + */ + public void testWriteMessageWithNegativeEnumValue() throws Exception { + SparseEnumMessage message = SparseEnumMessage.newBuilder() + .setSparseEnum(TestSparseEnum.SPARSE_E) .build(); + assertTrue(message.getSparseEnum().getNumber() < 0); + byte[] rawBytes = message.toByteArray(); + SparseEnumMessage message2 = SparseEnumMessage.parseFrom(rawBytes); + assertEquals(TestSparseEnum.SPARSE_E, message2.getSparseEnum()); + } +} |