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Diffstat (limited to 'java/compatibility_tests/v2.5.0/tests/src/main/java/com/google/protobuf/test/LazyStringArrayListTest.java')
-rw-r--r-- | java/compatibility_tests/v2.5.0/tests/src/main/java/com/google/protobuf/test/LazyStringArrayListTest.java | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/java/compatibility_tests/v2.5.0/tests/src/main/java/com/google/protobuf/test/LazyStringArrayListTest.java b/java/compatibility_tests/v2.5.0/tests/src/main/java/com/google/protobuf/test/LazyStringArrayListTest.java new file mode 100644 index 00000000..9bc94eef --- /dev/null +++ b/java/compatibility_tests/v2.5.0/tests/src/main/java/com/google/protobuf/test/LazyStringArrayListTest.java @@ -0,0 +1,163 @@ +// 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 junit.framework.TestCase; + +import java.util.ArrayList; +import java.util.List; + +/** + * Tests for {@link LazyStringArrayList}. + * + * @author jonp@google.com (Jon Perlow) + */ +public class LazyStringArrayListTest extends TestCase { + + private static String STRING_A = "A"; + private static String STRING_B = "B"; + private static String STRING_C = "C"; + + private static ByteString BYTE_STRING_A = ByteString.copyFromUtf8("A"); + private static ByteString BYTE_STRING_B = ByteString.copyFromUtf8("B"); + private static ByteString BYTE_STRING_C = ByteString.copyFromUtf8("C"); + + public void testJustStrings() { + LazyStringArrayList list = new LazyStringArrayList(); + list.add(STRING_A); + list.add(STRING_B); + list.add(STRING_C); + + assertEquals(3, list.size()); + assertSame(STRING_A, list.get(0)); + assertSame(STRING_B, list.get(1)); + assertSame(STRING_C, list.get(2)); + + list.set(1, STRING_C); + assertSame(STRING_C, list.get(1)); + + list.remove(1); + assertSame(STRING_A, list.get(0)); + assertSame(STRING_C, list.get(1)); + } + + public void testJustByteString() { + LazyStringArrayList list = new LazyStringArrayList(); + list.add(BYTE_STRING_A); + list.add(BYTE_STRING_B); + list.add(BYTE_STRING_C); + + assertEquals(3, list.size()); + assertSame(BYTE_STRING_A, list.getByteString(0)); + assertSame(BYTE_STRING_B, list.getByteString(1)); + assertSame(BYTE_STRING_C, list.getByteString(2)); + + list.remove(1); + assertSame(BYTE_STRING_A, list.getByteString(0)); + assertSame(BYTE_STRING_C, list.getByteString(1)); + } + + public void testConversionBackAndForth() { + LazyStringArrayList list = new LazyStringArrayList(); + list.add(STRING_A); + list.add(BYTE_STRING_B); + list.add(BYTE_STRING_C); + + // String a should be the same because it was originally a string + assertSame(STRING_A, list.get(0)); + + // String b and c should be different because the string has to be computed + // from the ByteString + String bPrime = list.get(1); + assertNotSame(STRING_B, bPrime); + assertEquals(STRING_B, bPrime); + String cPrime = list.get(2); + assertNotSame(STRING_C, cPrime); + assertEquals(STRING_C, cPrime); + + // String c and c should stay the same once cached. + assertSame(bPrime, list.get(1)); + assertSame(cPrime, list.get(2)); + + // ByteString needs to be computed from string for both a and b + ByteString aPrimeByteString = list.getByteString(0); + assertEquals(BYTE_STRING_A, aPrimeByteString); + ByteString bPrimeByteString = list.getByteString(1); + assertNotSame(BYTE_STRING_B, bPrimeByteString); + assertEquals(BYTE_STRING_B, list.getByteString(1)); + + // Once cached, ByteString should stay cached. + assertSame(aPrimeByteString, list.getByteString(0)); + assertSame(bPrimeByteString, list.getByteString(1)); + } + + public void testCopyConstructorCopiesByReference() { + LazyStringArrayList list1 = new LazyStringArrayList(); + list1.add(STRING_A); + list1.add(BYTE_STRING_B); + list1.add(BYTE_STRING_C); + + LazyStringArrayList list2 = new LazyStringArrayList(list1); + assertEquals(3, list2.size()); + assertSame(STRING_A, list2.get(0)); + assertSame(BYTE_STRING_B, list2.getByteString(1)); + assertSame(BYTE_STRING_C, list2.getByteString(2)); + } + + public void testListCopyConstructor() { + List<String> list1 = new ArrayList<String>(); + list1.add(STRING_A); + list1.add(STRING_B); + list1.add(STRING_C); + + LazyStringArrayList list2 = new LazyStringArrayList(list1); + assertEquals(3, list2.size()); + assertSame(STRING_A, list2.get(0)); + assertSame(STRING_B, list2.get(1)); + assertSame(STRING_C, list2.get(2)); + } + + public void testAddAllCopiesByReferenceIfPossible() { + LazyStringArrayList list1 = new LazyStringArrayList(); + list1.add(STRING_A); + list1.add(BYTE_STRING_B); + list1.add(BYTE_STRING_C); + + LazyStringArrayList list2 = new LazyStringArrayList(); + list2.addAll(list1); + + assertEquals(3, list2.size()); + assertSame(STRING_A, list2.get(0)); + assertSame(BYTE_STRING_B, list2.getByteString(1)); + assertSame(BYTE_STRING_C, list2.getByteString(2)); + } +} |