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Diffstat (limited to 'java/core/src/test/java/com/google/protobuf/RopeByteStringTest.java')
-rw-r--r-- | java/core/src/test/java/com/google/protobuf/RopeByteStringTest.java | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/java/core/src/test/java/com/google/protobuf/RopeByteStringTest.java b/java/core/src/test/java/com/google/protobuf/RopeByteStringTest.java new file mode 100644 index 00000000..4ec3a409 --- /dev/null +++ b/java/core/src/test/java/com/google/protobuf/RopeByteStringTest.java @@ -0,0 +1,189 @@ +// Protocol Buffers - Google's data interchange format +// Copyright 2008 Google Inc. All rights reserved. +// https://developers.google.com/protocol-buffers/ +// +// 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; + +import java.io.ByteArrayInputStream; +import java.io.ByteArrayOutputStream; +import java.io.InputStream; +import java.io.ObjectInputStream; +import java.io.ObjectOutputStream; +import java.io.UnsupportedEncodingException; +import java.util.Arrays; +import java.util.Iterator; + +/** + * This class tests {@link RopeByteString} by inheriting the tests from + * {@link LiteralByteStringTest}. Only a couple of methods are overridden. + * + * <p>A full test of the result of {@link RopeByteString#substring(int, int)} is found in the + * separate class {@link RopeByteStringSubstringTest}. + * + * @author carlanton@google.com (Carl Haverl) + */ +public class RopeByteStringTest extends LiteralByteStringTest { + + @Override + protected void setUp() throws Exception { + classUnderTest = "RopeByteString"; + referenceBytes = ByteStringTest.getTestBytes(22341, 22337766L); + Iterator<ByteString> iter = ByteStringTest.makeConcretePieces(referenceBytes).iterator(); + stringUnderTest = iter.next(); + while (iter.hasNext()) { + stringUnderTest = stringUnderTest.concat(iter.next()); + } + expectedHashCode = -1214197238; + } + + @Override + public void testGetTreeDepth() { + assertEquals(classUnderTest + " must have the expected tree depth", + 4, stringUnderTest.getTreeDepth()); + } + + public void testBalance() { + int numberOfPieces = 10000; + int pieceSize = 64; + byte[] testBytes = ByteStringTest.getTestBytes(numberOfPieces * pieceSize, 113377L); + + // Build up a big ByteString from smaller pieces to force a rebalance + ByteString concatenated = ByteString.EMPTY; + for (int i = 0; i < numberOfPieces; ++i) { + concatenated = concatenated.concat(ByteString.copyFrom(testBytes, i * pieceSize, pieceSize)); + } + + assertEquals(classUnderTest + " from string must have the expected type", + classUnderTest, getActualClassName(concatenated)); + assertTrue(classUnderTest + " underlying bytes must match after balancing", + Arrays.equals(testBytes, concatenated.toByteArray())); + ByteString testString = ByteString.copyFrom(testBytes); + assertTrue(classUnderTest + " balanced string must equal flat string", + concatenated.equals(testString)); + assertTrue(classUnderTest + " flat string must equal balanced string", + testString.equals(concatenated)); + assertEquals(classUnderTest + " balanced string must have same hash code as flat string", + testString.hashCode(), concatenated.hashCode()); + } + + @Override + public void testToString() throws UnsupportedEncodingException { + String sourceString = "I love unicode \u1234\u5678 characters"; + ByteString sourceByteString = ByteString.copyFromUtf8(sourceString); + int copies = 250; + + // By building the RopeByteString by concatenating, this is actually a fairly strenuous test. + StringBuilder builder = new StringBuilder(copies * sourceString.length()); + ByteString unicode = ByteString.EMPTY; + for (int i = 0; i < copies; ++i) { + builder.append(sourceString); + unicode = RopeByteString.concatenate(unicode, sourceByteString); + } + String testString = builder.toString(); + + assertEquals(classUnderTest + " from string must have the expected type", + classUnderTest, getActualClassName(unicode)); + String roundTripString = unicode.toString(UTF_8); + assertEquals(classUnderTest + " unicode bytes must match", + testString, roundTripString); + ByteString flatString = ByteString.copyFromUtf8(testString); + assertEquals(classUnderTest + " string must equal the flat string", flatString, unicode); + assertEquals(classUnderTest + " string must must have same hashCode as the flat string", + flatString.hashCode(), unicode.hashCode()); + } + + @Override + public void testCharsetToString() { + String sourceString = "I love unicode \u1234\u5678 characters"; + ByteString sourceByteString = ByteString.copyFromUtf8(sourceString); + int copies = 250; + + // By building the RopeByteString by concatenating, this is actually a fairly strenuous test. + StringBuilder builder = new StringBuilder(copies * sourceString.length()); + ByteString unicode = ByteString.EMPTY; + for (int i = 0; i < copies; ++i) { + builder.append(sourceString); + unicode = RopeByteString.concatenate(unicode, sourceByteString); + } + String testString = builder.toString(); + + assertEquals(classUnderTest + " from string must have the expected type", + classUnderTest, getActualClassName(unicode)); + String roundTripString = unicode.toString(Internal.UTF_8); + assertEquals(classUnderTest + " unicode bytes must match", + testString, roundTripString); + ByteString flatString = ByteString.copyFromUtf8(testString); + assertEquals(classUnderTest + " string must equal the flat string", flatString, unicode); + assertEquals(classUnderTest + " string must must have same hashCode as the flat string", + flatString.hashCode(), unicode.hashCode()); + } + + @Override + public void testToString_returnsCanonicalEmptyString() { + RopeByteString ropeByteString = + RopeByteString.newInstanceForTest(ByteString.EMPTY, ByteString.EMPTY); + assertSame(classUnderTest + " must be the same string references", + ByteString.EMPTY.toString(Internal.UTF_8), ropeByteString.toString(Internal.UTF_8)); + } + + @Override + public void testToString_raisesException() { + try { + ByteString byteString = + RopeByteString.newInstanceForTest(ByteString.EMPTY, ByteString.EMPTY); + byteString.toString("invalid"); + fail("Should have thrown an exception."); + } catch (UnsupportedEncodingException expected) { + // This is success + } + + try { + ByteString byteString = RopeByteString.concatenate(ByteString.copyFromUtf8("foo"), + ByteString.copyFromUtf8("bar")); + byteString.toString("invalid"); + fail("Should have thrown an exception."); + } catch (UnsupportedEncodingException expected) { + // This is success + } + } + + @Override + public void testJavaSerialization() throws Exception { + ByteArrayOutputStream out = new ByteArrayOutputStream(); + ObjectOutputStream oos = new ObjectOutputStream(out); + oos.writeObject(stringUnderTest); + oos.close(); + byte[] pickled = out.toByteArray(); + InputStream in = new ByteArrayInputStream(pickled); + ObjectInputStream ois = new ObjectInputStream(in); + Object o = ois.readObject(); + assertTrue("Didn't get a ByteString back", o instanceof ByteString); + assertEquals("Should get an equal ByteString back", stringUnderTest, o); + } +} |