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// Copyright 2017 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.testutils;
import static com.google.common.truth.Truth.assertThat;
import com.google.devtools.build.lib.skyframe.serialization.DeserializationContext;
import com.google.devtools.build.lib.skyframe.serialization.ObjectCodec;
import com.google.devtools.build.lib.skyframe.serialization.SerializationContext;
import com.google.devtools.build.lib.skyframe.serialization.SerializationException;
import com.google.devtools.build.lib.skyframe.serialization.strings.StringCodecs;
import com.google.devtools.build.lib.syntax.Environment.Frame;
import com.google.protobuf.CodedInputStream;
import com.google.protobuf.CodedOutputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
/** Helpers for serialization tests. */
public class TestUtils {
private TestUtils() {}
/** Serialize a value to a new byte array. */
public static <T> byte[] toBytes(ObjectCodec<T> codec, T value)
throws IOException, SerializationException {
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
CodedOutputStream codedOut = CodedOutputStream.newInstance(bytes);
codec.serialize(SerializationContext.create(), value, codedOut);
codedOut.flush();
return bytes.toByteArray();
}
/** Deserialize a value from a byte array. */
public static <T> T fromBytes(ObjectCodec<T> codec, byte[] bytes)
throws SerializationException, IOException {
return codec.deserialize(DeserializationContext.create(), CodedInputStream.newInstance(bytes));
}
/**
* Asserts that two {@link Frame}s have the same structure. Needed because {@link Frame} doesn't
* override {@link Object#equals}.
*/
public static void assertFramesEqual(Frame frame1, Frame frame2) {
assertThat(frame1.mutability().getAnnotation())
.isEqualTo(frame2.mutability().getAnnotation());
assertThat(frame1.getLabel()).isEqualTo(frame2.getLabel());
assertThat(frame1.getTransitiveBindings())
.containsExactlyEntriesIn(frame2.getTransitiveBindings()).inOrder();
if (frame1.getParent() == null || frame2.getParent() == null) {
assertThat(frame1.getParent()).isNull();
assertThat(frame2.getParent()).isNull();
} else {
assertFramesEqual(frame1.getParent(), frame2.getParent());
}
}
/**
* Fake string codec that replaces all input and output string values with the constant "dummy".
*/
public static class ConstantStringCodec implements ObjectCodec<String> {
private static final ObjectCodec<String> stringCodec = StringCodecs.simple();
@Override
public Class<String> getEncodedClass() {
return String.class;
}
@Override
public void serialize(SerializationContext context, String value, CodedOutputStream codedOut)
throws SerializationException, IOException {
stringCodec.serialize(context, "dummy", codedOut);
}
@Override
public String deserialize(DeserializationContext context, CodedInputStream codedIn)
throws SerializationException, IOException {
stringCodec.deserialize(context, codedIn);
return "dummy";
}
}
}
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