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// Copyright 2018 The Bazel Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.devtools.build.lib.skyframe.serialization;
import static com.google.common.truth.Truth.assertThat;
import static com.google.devtools.build.lib.testutil.MoreAsserts.assertThrows;
import com.google.devtools.build.lib.skyframe.serialization.ObjectCodecRegistry.CodecDescriptor;
import com.google.devtools.build.lib.skyframe.serialization.SerializationException.NoCodecException;
import com.google.protobuf.ByteString;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** Tests for {@link ObjectCodecRegistry}. */
@RunWith(JUnit4.class)
public class ObjectCodecRegistryTest {
@Test
public void testDescriptorLookups() throws NoCodecException {
SingletonCodec<String> codec1 = SingletonCodec.of("value1", "mnemonic1");
SingletonCodec<String> codec2 = SingletonCodec.of("value2", "mnemonic2");
ObjectCodecRegistry underTest = ObjectCodecRegistry.newBuilder()
.setAllowDefaultCodec(false)
.add("foo", codec1)
.add("bar", codec2)
.build();
CodecDescriptor fooDescriptor = underTest.getCodecDescriptor("foo");
assertThat(fooDescriptor.getCodec()).isSameAs(codec1);
assertThat(underTest.getCodecDescriptor(ByteString.copyFromUtf8("foo")))
.isSameAs(fooDescriptor);
assertThat(underTest.getCodecDescriptorByTag(fooDescriptor.getTag())).isSameAs(fooDescriptor);
CodecDescriptor barDescriptor = underTest.getCodecDescriptor("bar");
assertThat(barDescriptor.getCodec()).isSameAs(codec2);
assertThat(underTest.getCodecDescriptor(ByteString.copyFromUtf8("bar")))
.isSameAs(barDescriptor);
assertThat(underTest.getCodecDescriptorByTag(barDescriptor.getTag())).isSameAs(barDescriptor);
assertThat(barDescriptor.getTag()).isNotEqualTo(fooDescriptor.getTag());
assertThrows(NoCodecException.class, () -> underTest.getCodecDescriptor("baz"));
assertThrows(
NoCodecException.class,
() -> underTest.getCodecDescriptor(ByteString.copyFromUtf8("baz")));
assertThrows(NoCodecException.class, () -> underTest.getCodecDescriptorByTag(42));
}
@Test
public void testDefaultCodecFallback() throws NoCodecException {
SingletonCodec<String> codec = SingletonCodec.of("value1", "mnemonic1");
ObjectCodecRegistry underTest = ObjectCodecRegistry.newBuilder()
.setAllowDefaultCodec(true)
.add("foo", codec)
.build();
CodecDescriptor fooDescriptor = underTest.getCodecDescriptor("foo");
assertThat(fooDescriptor.getCodec()).isSameAs(codec);
CodecDescriptor barDefaultDescriptor = underTest.getCodecDescriptor("bar");
assertThat(barDefaultDescriptor.getCodec()).isNotSameAs(codec);
assertThat(barDefaultDescriptor.getTag()).isNotEqualTo(fooDescriptor.getTag());
assertThat(underTest.getCodecDescriptorByTag(barDefaultDescriptor.getTag()))
.isSameAs(barDefaultDescriptor);
assertThat(underTest.getCodecDescriptor("baz")).isSameAs(barDefaultDescriptor);
// Bogus tags still throw.
assertThrows(NoCodecException.class, () -> underTest.getCodecDescriptorByTag(42));
}
@Test
public void testStableTagOrdering() throws NoCodecException {
SingletonCodec<String> codec1 = SingletonCodec.of("value1", "mnemonic1");
SingletonCodec<String> codec2 = SingletonCodec.of("value2", "mnemonic2");
ObjectCodecRegistry underTest1 = ObjectCodecRegistry.newBuilder()
.setAllowDefaultCodec(true)
.add("foo", codec1)
.add("bar", codec2)
.build();
ObjectCodecRegistry underTest2 = ObjectCodecRegistry.newBuilder()
.setAllowDefaultCodec(true)
.add("bar", codec2)
.add("foo", codec1)
.build();
assertThat(underTest1.getCodecDescriptor("foo").getTag())
.isEqualTo(underTest2.getCodecDescriptor("foo").getTag());
assertThat(underTest1.getCodecDescriptor("bar").getTag())
.isEqualTo(underTest2.getCodecDescriptor("bar").getTag());
// Default codec.
assertThat(underTest1.getCodecDescriptor("baz").getTag())
.isEqualTo(underTest2.getCodecDescriptor("baz").getTag());
}
@Test
public void testGetBuilder() throws NoCodecException {
SingletonCodec<String> codec1 = SingletonCodec.of("value1", "mnemonic1");
SingletonCodec<String> codec2 = SingletonCodec.of("value2", "mnemonic2");
ObjectCodecRegistry underTest =
ObjectCodecRegistry.newBuilder()
.setAllowDefaultCodec(false)
.add("foo", codec1)
.add("bar", codec2)
.build();
ObjectCodecRegistry copy = underTest.getBuilder().build();
assertThat(copy.getCodecDescriptor("bar").getTag()).isEqualTo(1);
assertThat(copy.getCodecDescriptor("foo").getTag()).isEqualTo(2);
assertThrows(NoCodecException.class, () -> copy.getCodecDescriptor("baz"));
}
}
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