// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// https://developers.google.com/protocol-buffers/
//
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package com.google.protobuf;
import static protobuf_unittest.UnittestProto.optionalInt32Extension;
import protobuf_unittest.UnittestProto.TestAllExtensions;
import protobuf_unittest.UnittestProto.TestAllTypes;
import java.io.IOException;
import junit.framework.TestCase;
/**
* Unit test for {@link LazyFieldLite}.
*
* @author xiangl@google.com (Xiang Li)
*/
public class LazyFieldLiteTest extends TestCase {
public void testGetValue() {
MessageLite message = TestUtil.getAllSet();
LazyFieldLite lazyField = createLazyFieldLiteFromMessage(message);
assertEquals(message, lazyField.getValue(TestAllTypes.getDefaultInstance()));
changeValue(lazyField);
assertNotEqual(message, lazyField.getValue(TestAllTypes.getDefaultInstance()));
}
public void testGetValueEx() throws Exception {
TestAllExtensions message = TestUtil.getAllExtensionsSet();
LazyFieldLite lazyField = createLazyFieldLiteFromMessage(message);
assertEquals(message, lazyField.getValue(TestAllExtensions.getDefaultInstance()));
changeValue(lazyField);
assertNotEqual(message, lazyField.getValue(TestAllExtensions.getDefaultInstance()));
}
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);
assertEquals(message, lazyField.getValue(TestAllTypes.getDefaultInstance()));
}
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);
assertEquals(value, lazyField.getValue(TestAllExtensions.getDefaultInstance()));
}
public void testGetSerializedSize() {
MessageLite message = TestUtil.getAllSet();
LazyFieldLite lazyField = createLazyFieldLiteFromMessage(message);
assertEquals(message.getSerializedSize(), lazyField.getSerializedSize());
changeValue(lazyField);
assertNotEqual(message.getSerializedSize(), lazyField.getSerializedSize());
}
public void testGetSerializedSizeEx() throws Exception {
TestAllExtensions message = TestUtil.getAllExtensionsSet();
LazyFieldLite lazyField = createLazyFieldLiteFromMessage(message);
assertEquals(message.getSerializedSize(), lazyField.getSerializedSize());
changeValue(lazyField);
assertNotEqual(message.getSerializedSize(), lazyField.getSerializedSize());
}
public void testGetByteString() {
MessageLite message = TestUtil.getAllSet();
LazyFieldLite lazyField = createLazyFieldLiteFromMessage(message);
assertEquals(message.toByteString(), lazyField.toByteString());
changeValue(lazyField);
assertNotEqual(message.toByteString(), lazyField.toByteString());
}
public void testGetByteStringEx() throws Exception {
TestAllExtensions message = TestUtil.getAllExtensionsSet();
LazyFieldLite lazyField = createLazyFieldLiteFromMessage(message);
assertEquals(message.toByteString(), lazyField.toByteString());
changeValue(lazyField);
assertNotEqual(message.toByteString(), lazyField.toByteString());
}
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());
assertEquals(message, value);
}
public void testEmptyLazyField() throws Exception {
LazyFieldLite field = new LazyFieldLite();
assertEquals(0, field.getSerializedSize());
assertEquals(ByteString.EMPTY, field.toByteString());
}
public void testInvalidProto() throws Exception {
// Silently fails and uses the default instance.
LazyFieldLite field = new LazyFieldLite(
TestUtil.getExtensionRegistry(), ByteString.copyFromUtf8("invalid"));
assertEquals(
TestAllTypes.getDefaultInstance(), field.getValue(TestAllTypes.getDefaultInstance()));
assertEquals(0, field.getSerializedSize());
assertEquals(ByteString.EMPTY, field.toByteString());
}
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();
assertEquals(expected, field1.getValue(TestAllTypes.getDefaultInstance()));
}
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);
assertEquals(expected, field1.getValue(TestAllTypes.getDefaultInstance()));
// Now reverse which one is parsed first.
field1 = LazyFieldLite.fromValue(message1);
field2 = createLazyFieldLiteFromMessage(message2);
field2.getValue(TestAllTypes.getDefaultInstance()); // Force parsing.
field1.merge(field2);
assertEquals(expected, field1.getValue(TestAllTypes.getDefaultInstance()));
}
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.
assertEquals(message, invalid.getValue(TestAllTypes.getDefaultInstance()));
}
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.newBuilder().build();
ExtensionRegistryLite emptyRegistry = ExtensionRegistryLite.getEmptyRegistry();
LazyFieldLite field = LazyFieldLite.fromValue(messageWithExtensions);
field.merge(createLazyFieldLiteFromMessage(emptyRegistry, emptyMessage));
assertEquals(messageWithExtensions, field.getValue(TestAllExtensions.getDefaultInstance()));
// Now reverse the order of the merging.
field = createLazyFieldLiteFromMessage(emptyRegistry, emptyMessage);
field.merge(LazyFieldLite.fromValue(messageWithExtensions));
assertEquals(messageWithExtensions, field.getValue(TestAllExtensions.getDefaultInstance()));
// 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);
assertEquals(messageWithExtensions, field.getValue(TestAllExtensions.getDefaultInstance()));
// And again reverse.
field = createLazyFieldLiteFromMessage(emptyRegistry, emptyMessage);
field.getValue(TestAllExtensions.getDefaultInstance()); // Force parsing.
other = LazyFieldLite.fromValue(messageWithExtensions);
field.merge(other);
assertEquals(messageWithExtensions, field.getValue(TestAllExtensions.getDefaultInstance()));
}
// 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) {
assertFalse(unexpected == actual
|| (unexpected != null && unexpected.equals(actual)));
}
}