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package io.grpc.protobuf.lite;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.fail;
import com.google.common.io.ByteStreams;
import com.google.protobuf.ByteString;
import com.google.protobuf.Empty;
import com.google.protobuf.Enum;
import com.google.protobuf.InvalidProtocolBufferException;
import com.google.protobuf.Type;
import io.grpc.Drainable;
import io.grpc.Metadata;
import io.grpc.MethodDescriptor.Marshaller;
import io.grpc.MethodDescriptor.PrototypeMarshaller;
import io.grpc.Status;
import io.grpc.StatusRuntimeException;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Arrays;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** Unit tests for {@link ProtoLiteUtils}. */
@RunWith(JUnit4.class)
public class ProtoLiteUtilsTest {
@Rule public final ExpectedException thrown = ExpectedException.none();
private Marshaller<Type> marshaller = ProtoLiteUtils.marshaller(Type.getDefaultInstance());
private Type proto = Type.newBuilder().setName("name").build();
@Test
public void testPassthrough() {
assertSame(proto, marshaller.parse(marshaller.stream(proto)));
}
@Test
public void testRoundtrip() throws Exception {
InputStream is = marshaller.stream(proto);
is = new ByteArrayInputStream(ByteStreams.toByteArray(is));
assertEquals(proto, marshaller.parse(is));
}
@Test
public void testInvalidatedMessage() throws Exception {
InputStream is = marshaller.stream(proto);
// Invalidates message, and drains all bytes
byte[] unused = ByteStreams.toByteArray(is);
try {
((ProtoInputStream) is).message();
fail("Expected exception");
} catch (IllegalStateException ex) {
// expected
}
// Zero bytes is the default message
assertEquals(Type.getDefaultInstance(), marshaller.parse(is));
}
@Test
public void parseInvalid() throws Exception {
InputStream is = new ByteArrayInputStream(new byte[] {-127});
try {
marshaller.parse(is);
fail("Expected exception");
} catch (StatusRuntimeException ex) {
assertEquals(Status.Code.INTERNAL, ex.getStatus().getCode());
assertNotNull(((InvalidProtocolBufferException) ex.getCause()).getUnfinishedMessage());
}
}
@Test
public void testMismatch() throws Exception {
Marshaller<Enum> enumMarshaller = ProtoLiteUtils.marshaller(Enum.getDefaultInstance());
// Enum's name and Type's name are both strings with tag 1.
Enum altProto = Enum.newBuilder().setName(proto.getName()).build();
assertEquals(proto, marshaller.parse(enumMarshaller.stream(altProto)));
}
@Test
public void introspection() throws Exception {
Marshaller<Enum> enumMarshaller = ProtoLiteUtils.marshaller(Enum.getDefaultInstance());
PrototypeMarshaller<Enum> prototypeMarshaller = (PrototypeMarshaller<Enum>) enumMarshaller;
assertSame(Enum.getDefaultInstance(), prototypeMarshaller.getMessagePrototype());
assertSame(Enum.class, prototypeMarshaller.getMessageClass());
}
@Test
public void marshallerShouldNotLimitProtoSize() throws Exception {
// The default limit is 64MB. Using a larger proto to verify that the limit is not enforced.
byte[] bigName = new byte[70 * 1024 * 1024];
Arrays.fill(bigName, (byte) 32);
proto = Type.newBuilder().setNameBytes(ByteString.copyFrom(bigName)).build();
// Just perform a round trip to verify that it works.
testRoundtrip();
}
@Test
public void testAvailable() throws Exception {
InputStream is = marshaller.stream(proto);
assertEquals(proto.getSerializedSize(), is.available());
is.read();
assertEquals(proto.getSerializedSize() - 1, is.available());
while (is.read() != -1) {}
assertEquals(-1, is.read());
assertEquals(0, is.available());
}
@Test
public void testEmpty() throws IOException {
Marshaller<Empty> marshaller = ProtoLiteUtils.marshaller(Empty.getDefaultInstance());
InputStream is = marshaller.stream(Empty.getDefaultInstance());
assertEquals(0, is.available());
byte[] b = new byte[10];
assertEquals(-1, is.read(b));
assertArrayEquals(new byte[10], b);
// Do the same thing again, because the internal state may be different
assertEquals(-1, is.read(b));
assertArrayEquals(new byte[10], b);
assertEquals(-1, is.read());
assertEquals(0, is.available());
}
@Test
public void testDrainTo_all() throws Exception {
byte[] golden = ByteStreams.toByteArray(marshaller.stream(proto));
InputStream is = marshaller.stream(proto);
Drainable d = (Drainable) is;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
int drained = d.drainTo(baos);
assertEquals(baos.size(), drained);
assertArrayEquals(golden, baos.toByteArray());
assertEquals(0, is.available());
}
@Test
public void testDrainTo_partial() throws Exception {
final byte[] golden;
{
InputStream is = marshaller.stream(proto);
is.read();
golden = ByteStreams.toByteArray(is);
}
InputStream is = marshaller.stream(proto);
is.read();
Drainable d = (Drainable) is;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
int drained = d.drainTo(baos);
assertEquals(baos.size(), drained);
assertArrayEquals(golden, baos.toByteArray());
assertEquals(0, is.available());
}
@Test
public void testDrainTo_none() throws Exception {
byte[] golden = ByteStreams.toByteArray(marshaller.stream(proto));
InputStream is = marshaller.stream(proto);
byte[] unused = ByteStreams.toByteArray(is);
Drainable d = (Drainable) is;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
assertEquals(0, d.drainTo(baos));
assertArrayEquals(new byte[0], baos.toByteArray());
assertEquals(0, is.available());
}
@Test
public void metadataMarshaller_roundtrip() {
Metadata.BinaryMarshaller<Type> metadataMarshaller =
ProtoLiteUtils.metadataMarshaller(Type.getDefaultInstance());
assertEquals(proto, metadataMarshaller.parseBytes(metadataMarshaller.toBytes(proto)));
}
@Test
public void metadataMarshaller_invalid() {
Metadata.BinaryMarshaller<Type> metadataMarshaller =
ProtoLiteUtils.metadataMarshaller(Type.getDefaultInstance());
try {
metadataMarshaller.parseBytes(new byte[] {-127});
fail("Expected exception");
} catch (IllegalArgumentException ex) {
assertNotNull(((InvalidProtocolBufferException) ex.getCause()).getUnfinishedMessage());
}
}
@Test
public void extensionRegistry_notNull() {
thrown.expect(NullPointerException.class);
thrown.expectMessage("newRegistry");
ProtoLiteUtils.setExtensionRegistry(null);
}
}