// 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,
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
package com.google.protobuf;
import static com.google.common.truth.Truth.assertThat;
import static protobuf_unittest.UnittestProto.optionalInt32Extension;
import protobuf_unittest.UnittestProto.TestAllExtensions;
import protobuf_unittest.UnittestProto.TestAllTypes;
import java.io.IOException;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** Unit test for {@link LazyFieldLite}. */
@RunWith(JUnit4.class)
public class LazyFieldLiteTest {
@Test
public void testGetValue() {
MessageLite message = TestUtil.getAllSet();
LazyFieldLite lazyField = createLazyFieldLiteFromMessage(message);
assertThat(message).isEqualTo(lazyField.getValue(TestAllTypes.getDefaultInstance()));
changeValue(lazyField);
assertNotEqual(message, lazyField.getValue(TestAllTypes.getDefaultInstance()));
}
@Test
public void testGetValueEx() throws Exception {
TestAllExtensions message = TestUtil.getAllExtensionsSet();
LazyFieldLite lazyField = createLazyFieldLiteFromMessage(message);
assertThat(message).isEqualTo(lazyField.getValue(TestAllExtensions.getDefaultInstance()));
changeValue(lazyField);
assertNotEqual(message, lazyField.getValue(TestAllExtensions.getDefaultInstance()));
}
@Test
public void testSetValue() {
MessageLite message = TestUtil.getAllSet();
LazyFieldLite lazyField = createLazyFieldLiteFromMessage(message);
changeValue(lazyField);
assertNotEqual(message, lazyField.getValue(TestAllTypes.getDefaultInstance()));
message = lazyField.getValue(TestAllTypes.getDefaultInstance());
changeValue(lazyField);
assertThat(message).isEqualTo(lazyField.getValue(TestAllTypes.getDefaultInstance()));
}
@Test
public void testSetValueEx() throws Exception {
TestAllExtensions message = TestUtil.getAllExtensionsSet();
LazyFieldLite lazyField = createLazyFieldLiteFromMessage(message);
changeValue(lazyField);
assertNotEqual(message, lazyField.getValue(TestAllExtensions.getDefaultInstance()));
MessageLite value = lazyField.getValue(TestAllExtensions.getDefaultInstance());
changeValue(lazyField);
assertThat(value).isEqualTo(lazyField.getValue(TestAllExtensions.getDefaultInstance()));
}
@Test
public void testGetSerializedSize() {
MessageLite message = TestUtil.getAllSet();
LazyFieldLite lazyField = createLazyFieldLiteFromMessage(message);
assertThat(message.getSerializedSize()).isEqualTo(lazyField.getSerializedSize());
changeValue(lazyField);
assertNotEqual(message.getSerializedSize(), lazyField.getSerializedSize());
}
@Test
public void testGetSerializedSizeEx() throws Exception {
TestAllExtensions message = TestUtil.getAllExtensionsSet();
LazyFieldLite lazyField = createLazyFieldLiteFromMessage(message);
assertThat(message.getSerializedSize()).isEqualTo(lazyField.getSerializedSize());
changeValue(lazyField);
assertNotEqual(message.getSerializedSize(), lazyField.getSerializedSize());
}
@Test
public void testGetByteString() {
MessageLite message = TestUtil.getAllSet();
LazyFieldLite lazyField = createLazyFieldLiteFromMessage(message);
assertThat(message.toByteString()).isEqualTo(lazyField.toByteString());
changeValue(lazyField);
assertNotEqual(message.toByteString(), lazyField.toByteString());
}
@Test
public void testGetByteStringEx() throws Exception {
TestAllExtensions message = TestUtil.getAllExtensionsSet();
LazyFieldLite lazyField = createLazyFieldLiteFromMessage(message);
assertThat(message.toByteString()).isEqualTo(lazyField.toByteString());
changeValue(lazyField);
assertNotEqual(message.toByteString(), lazyField.toByteString());
}
@Test
public void testMergeExtensions() throws Exception {
TestAllExtensions message = TestUtil.getAllExtensionsSet();
LazyFieldLite original = createLazyFieldLiteFromMessage(message);
LazyFieldLite merged = new LazyFieldLite();
merged.merge(original);
TestAllExtensions value =
(TestAllExtensions) merged.getValue(TestAllExtensions.getDefaultInstance());
assertThat(message).isEqualTo(value);
}
@Test
public void testEmptyLazyField() throws Exception {
LazyFieldLite field = new LazyFieldLite();
assertThat(field.getSerializedSize()).isEqualTo(0);
assertThat(field.toByteString()).isEqualTo(ByteString.EMPTY);
}
@Test
public void testInvalidProto() throws Exception {
// Silently fails and uses the default instance.
LazyFieldLite field =
new LazyFieldLite(TestUtil.getExtensionRegistry(), ByteString.copyFromUtf8("invalid"));
assertThat(
field.getValue(TestAllTypes.getDefaultInstance()))
.isEqualTo(TestAllTypes.getDefaultInstance());
assertThat(field.getSerializedSize()).isEqualTo(0);
assertThat(field.toByteString()).isEqualTo(ByteString.EMPTY);
}
@Test
public void testMergeBeforeParsing() throws Exception {
TestAllTypes message1 = TestAllTypes.newBuilder().setOptionalInt32(1).build();
LazyFieldLite field1 = createLazyFieldLiteFromMessage(message1);
TestAllTypes message2 = TestAllTypes.newBuilder().setOptionalInt64(2).build();
LazyFieldLite field2 = createLazyFieldLiteFromMessage(message2);
field1.merge(field2);
TestAllTypes expected =
TestAllTypes.newBuilder().setOptionalInt32(1).setOptionalInt64(2).build();
assertThat(field1.getValue(TestAllTypes.getDefaultInstance())).isEqualTo(expected);
}
@Test
public void testMergeOneNotParsed() throws Exception {
// Test a few different paths that involve one message that was not parsed.
TestAllTypes message1 = TestAllTypes.newBuilder().setOptionalInt32(1).build();
TestAllTypes message2 = TestAllTypes.newBuilder().setOptionalInt64(2).build();
TestAllTypes expected =
TestAllTypes.newBuilder().setOptionalInt32(1).setOptionalInt64(2).build();
LazyFieldLite field1 = LazyFieldLite.fromValue(message1);
field1.getValue(TestAllTypes.getDefaultInstance()); // Force parsing.
LazyFieldLite field2 = createLazyFieldLiteFromMessage(message2);
field1.merge(field2);
assertThat(field1.getValue(TestAllTypes.getDefaultInstance())).isEqualTo(expected);
// Now reverse which one is parsed first.
field1 = LazyFieldLite.fromValue(message1);
field2 = createLazyFieldLiteFromMessage(message2);
field2.getValue(TestAllTypes.getDefaultInstance()); // Force parsing.
field1.merge(field2);
assertThat(field1.getValue(TestAllTypes.getDefaultInstance())).isEqualTo(expected);
}
@Test
public void testMergeInvalid() throws Exception {
// Test a few different paths that involve one message that was not parsed.
TestAllTypes message = TestAllTypes.newBuilder().setOptionalInt32(1).build();
LazyFieldLite valid = LazyFieldLite.fromValue(message);
LazyFieldLite invalid =
new LazyFieldLite(TestUtil.getExtensionRegistry(), ByteString.copyFromUtf8("invalid"));
invalid.merge(valid);
// We swallow the exception and just use the set field.
assertThat(invalid.getValue(TestAllTypes.getDefaultInstance())).isEqualTo(message);
}
@Test
public void testMergeKeepsExtensionsWhenPossible() throws Exception {
// In this test we attempt to only use the empty registry, which will strip out all extensions
// when serializing and then parsing. We verify that each code path will attempt to not
// serialize and parse a message that was set directly without going through the
// extensionRegistry.
TestAllExtensions messageWithExtensions =
TestAllExtensions.newBuilder().setExtension(optionalInt32Extension, 42).build();
TestAllExtensions emptyMessage = TestAllExtensions.getDefaultInstance();
ExtensionRegistryLite emptyRegistry = ExtensionRegistryLite.getEmptyRegistry();
LazyFieldLite field = LazyFieldLite.fromValue(messageWithExtensions);
field.merge(createLazyFieldLiteFromMessage(emptyRegistry, emptyMessage));
assertThat(field.getValue(TestAllExtensions.getDefaultInstance()))
.isEqualTo(messageWithExtensions);
// Now reverse the order of the merging.
field = createLazyFieldLiteFromMessage(emptyRegistry, emptyMessage);
field.merge(LazyFieldLite.fromValue(messageWithExtensions));
assertThat(field.getValue(TestAllExtensions.getDefaultInstance()))
.isEqualTo(messageWithExtensions);
// Now try parsing the empty field first.
field = LazyFieldLite.fromValue(messageWithExtensions);
LazyFieldLite other = createLazyFieldLiteFromMessage(emptyRegistry, emptyMessage);
other.getValue(TestAllExtensions.getDefaultInstance()); // Force parsing.
field.merge(other);
assertThat(field.getValue(TestAllExtensions.getDefaultInstance()))
.isEqualTo(messageWithExtensions);
// And again reverse.
field = createLazyFieldLiteFromMessage(emptyRegistry, emptyMessage);
field.getValue(TestAllExtensions.getDefaultInstance()); // Force parsing.
other = LazyFieldLite.fromValue(messageWithExtensions);
field.merge(other);
assertThat(field.getValue(TestAllExtensions.getDefaultInstance()))
.isEqualTo(messageWithExtensions);
}
// Help methods.
private LazyFieldLite createLazyFieldLiteFromMessage(MessageLite message) {
return createLazyFieldLiteFromMessage(TestUtil.getExtensionRegistry(), message);
}
private LazyFieldLite createLazyFieldLiteFromMessage(
ExtensionRegistryLite extensionRegistry, MessageLite message) {
ByteString bytes = message.toByteString();
return new LazyFieldLite(extensionRegistry, bytes);
}
private void changeValue(LazyFieldLite lazyField) {
TestAllTypes.Builder builder = TestUtil.getAllSet().toBuilder();
builder.addRepeatedBool(true);
MessageLite newMessage = builder.build();
lazyField.setValue(newMessage);
}
private void assertNotEqual(Object unexpected, Object actual) {
assertThat(unexpected).isNotSameInstanceAs(actual);
assertThat((unexpected != null && unexpected.equals(actual))).isFalse();
}
}
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