// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// http://code.google.com/p/protobuf/
//
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//
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package com.google.protobuf;
import com.google.protobuf.Descriptors.FileDescriptor;
import com.google.protobuf.Descriptors.MethodDescriptor;
import google.protobuf.no_generic_services_test.UnittestNoGenericServices;
import protobuf_unittest.MessageWithNoOuter;
import protobuf_unittest.ServiceWithNoOuter;
import protobuf_unittest.UnittestProto.TestAllTypes;
import protobuf_unittest.UnittestProto.TestService;
import protobuf_unittest.UnittestProto.FooRequest;
import protobuf_unittest.UnittestProto.FooResponse;
import protobuf_unittest.UnittestProto.BarRequest;
import protobuf_unittest.UnittestProto.BarResponse;
import org.easymock.classextension.EasyMock;
import org.easymock.classextension.IMocksControl;
import org.easymock.IArgumentMatcher;
import java.util.HashSet;
import java.util.Set;
import junit.framework.TestCase;
/**
* Tests services and stubs.
*
* @author kenton@google.com Kenton Varda
*/
public class ServiceTest extends TestCase {
private IMocksControl control;
private RpcController mockController;
private final Descriptors.MethodDescriptor fooDescriptor =
TestService.getDescriptor().getMethods().get(0);
private final Descriptors.MethodDescriptor barDescriptor =
TestService.getDescriptor().getMethods().get(1);
@Override
protected void setUp() throws Exception {
super.setUp();
control = EasyMock.createStrictControl();
mockController = control.createMock(RpcController.class);
}
// =================================================================
/** Tests Service.callMethod(). */
public void testCallMethod() throws Exception {
FooRequest fooRequest = FooRequest.newBuilder().build();
BarRequest barRequest = BarRequest.newBuilder().build();
MockCallback<Message> fooCallback = new MockCallback<Message>();
MockCallback<Message> barCallback = new MockCallback<Message>();
TestService mockService = control.createMock(TestService.class);
mockService.foo(EasyMock.same(mockController), EasyMock.same(fooRequest),
this.<FooResponse>wrapsCallback(fooCallback));
mockService.bar(EasyMock.same(mockController), EasyMock.same(barRequest),
this.<BarResponse>wrapsCallback(barCallback));
control.replay();
mockService.callMethod(fooDescriptor, mockController,
fooRequest, fooCallback);
mockService.callMethod(barDescriptor, mockController,
barRequest, barCallback);
control.verify();
}
/** Tests Service.get{Request,Response}Prototype(). */
public void testGetPrototype() throws Exception {
TestService mockService = control.createMock(TestService.class);
assertSame(mockService.getRequestPrototype(fooDescriptor),
FooRequest.getDefaultInstance());
assertSame(mockService.getResponsePrototype(fooDescriptor),
FooResponse.getDefaultInstance());
assertSame(mockService.getRequestPrototype(barDescriptor),
BarRequest.getDefaultInstance());
assertSame(mockService.getResponsePrototype(barDescriptor),
BarResponse.getDefaultInstance());
}
/** Tests generated stubs. */
public void testStub() throws Exception {
FooRequest fooRequest = FooRequest.newBuilder().build();
BarRequest barRequest = BarRequest.newBuilder().build();
MockCallback<FooResponse> fooCallback = new MockCallback<FooResponse>();
MockCallback<BarResponse> barCallback = new MockCallback<BarResponse>();
RpcChannel mockChannel = control.createMock(RpcChannel.class);
TestService stub = TestService.newStub(mockChannel);
mockChannel.callMethod(
EasyMock.same(fooDescriptor),
EasyMock.same(mockController),
EasyMock.same(fooRequest),
EasyMock.same(FooResponse.getDefaultInstance()),
this.<Message>wrapsCallback(fooCallback));
mockChannel.callMethod(
EasyMock.same(barDescriptor),
EasyMock.same(mockController),
EasyMock.same(barRequest),
EasyMock.same(BarResponse.getDefaultInstance()),
this.<Message>wrapsCallback(barCallback));
control.replay();
stub.foo(mockController, fooRequest, fooCallback);
stub.bar(mockController, barRequest, barCallback);
control.verify();
}
/** Tests generated blocking stubs. */
public void testBlockingStub() throws Exception {
FooRequest fooRequest = FooRequest.newBuilder().build();
BarRequest barRequest = BarRequest.newBuilder().build();
BlockingRpcChannel mockChannel =
control.createMock(BlockingRpcChannel.class);
TestService.BlockingInterface stub =
TestService.newBlockingStub(mockChannel);
FooResponse fooResponse = FooResponse.newBuilder().build();
BarResponse barResponse = BarResponse.newBuilder().build();
EasyMock.expect(mockChannel.callBlockingMethod(
EasyMock.same(fooDescriptor),
EasyMock.same(mockController),
EasyMock.same(fooRequest),
EasyMock.same(FooResponse.getDefaultInstance()))).andReturn(fooResponse);
EasyMock.expect(mockChannel.callBlockingMethod(
EasyMock.same(barDescriptor),
EasyMock.same(mockController),
EasyMock.same(barRequest),
EasyMock.same(BarResponse.getDefaultInstance()))).andReturn(barResponse);
control.replay();
assertSame(fooResponse, stub.foo(mockController, fooRequest));
assertSame(barResponse, stub.bar(mockController, barRequest));
control.verify();
}
public void testNewReflectiveService() {
ServiceWithNoOuter.Interface impl =
control.createMock(ServiceWithNoOuter.Interface.class);
RpcController controller = control.createMock(RpcController.class);
Service service = ServiceWithNoOuter.newReflectiveService(impl);
MethodDescriptor fooMethod =
ServiceWithNoOuter.getDescriptor().findMethodByName("Foo");
MessageWithNoOuter request = MessageWithNoOuter.getDefaultInstance();
RpcCallback<Message> callback = new RpcCallback<Message>() {
public void run(Message parameter) {
// No reason this should be run.
fail();
}
};
RpcCallback<TestAllTypes> specializedCallback =
RpcUtil.specializeCallback(callback);
impl.foo(EasyMock.same(controller), EasyMock.same(request),
EasyMock.same(specializedCallback));
EasyMock.expectLastCall();
control.replay();
service.callMethod(fooMethod, controller, request, callback);
control.verify();
}
public void testNewReflectiveBlockingService() throws ServiceException {
ServiceWithNoOuter.BlockingInterface impl =
control.createMock(ServiceWithNoOuter.BlockingInterface.class);
RpcController controller = control.createMock(RpcController.class);
BlockingService service =
ServiceWithNoOuter.newReflectiveBlockingService(impl);
MethodDescriptor fooMethod =
ServiceWithNoOuter.getDescriptor().findMethodByName("Foo");
MessageWithNoOuter request = MessageWithNoOuter.getDefaultInstance();
RpcCallback<Message> callback = new RpcCallback<Message>() {
public void run(Message parameter) {
// No reason this should be run.
fail();
}
};
TestAllTypes expectedResponse = TestAllTypes.getDefaultInstance();
EasyMock.expect(impl.foo(EasyMock.same(controller), EasyMock.same(request)))
.andReturn(expectedResponse);
control.replay();
Message response =
service.callBlockingMethod(fooMethod, controller, request);
assertEquals(expectedResponse, response);
control.verify();
}
public void testNoGenericServices() throws Exception {
// Non-services should be usable.
UnittestNoGenericServices.TestMessage message =
UnittestNoGenericServices.TestMessage.newBuilder()
.setA(123)
.setExtension(UnittestNoGenericServices.testExtension, 456)
.build();
assertEquals(123, message.getA());
assertEquals(1, UnittestNoGenericServices.TestEnum.FOO.getNumber());
// Build a list of the class names nested in UnittestNoGenericServices.
String outerName = "google.protobuf.no_generic_services_test." +
"UnittestNoGenericServices";
Class<?> outerClass = Class.forName(outerName);
Set<String> innerClassNames = new HashSet<String>();
for (Class<?> innerClass : outerClass.getClasses()) {
String fullName = innerClass.getName();
// Figure out the unqualified name of the inner class.
// Note: Surprisingly, the full name of an inner class will be separated
// from the outer class name by a '$' rather than a '.'. This is not
// mentioned in the documentation for java.lang.Class. I don't want to
// make assumptions, so I'm just going to accept any character as the
// separator.
assertTrue(fullName.startsWith(outerName));
innerClassNames.add(fullName.substring(outerName.length() + 1));
}
// No service class should have been generated.
assertTrue(innerClassNames.contains("TestMessage"));
assertTrue(innerClassNames.contains("TestEnum"));
assertFalse(innerClassNames.contains("TestService"));
// But descriptors are there.
FileDescriptor file = UnittestNoGenericServices.getDescriptor();
assertEquals(1, file.getServices().size());
assertEquals("TestService", file.getServices().get(0).getName());
assertEquals(1, file.getServices().get(0).getMethods().size());
assertEquals("Foo",
file.getServices().get(0).getMethods().get(0).getName());
}
// =================================================================
/**
* wrapsCallback() is an EasyMock argument predicate. wrapsCallback(c)
* matches a callback if calling that callback causes c to be called.
* In other words, c wraps the given callback.
*/
private <Type extends Message> RpcCallback<Type> wrapsCallback(
MockCallback<?> callback) {
EasyMock.reportMatcher(new WrapsCallback(callback));
return null;
}
/** The parameter to wrapsCallback() must be a MockCallback. */
private static class MockCallback<Type extends Message>
implements RpcCallback<Type> {
private boolean called = false;
public boolean isCalled() { return called; }
public void reset() { called = false; }
public void run(Type message) { called = true; }
}
/** Implementation of the wrapsCallback() argument matcher. */
private static class WrapsCallback implements IArgumentMatcher {
private MockCallback<?> callback;
public WrapsCallback(MockCallback<?> callback) {
this.callback = callback;
}
@SuppressWarnings("unchecked")
public boolean matches(Object actual) {
if (!(actual instanceof RpcCallback)) {
return false;
}
RpcCallback actualCallback = (RpcCallback)actual;
callback.reset();
actualCallback.run(null);
return callback.isCalled();
}
public void appendTo(StringBuffer buffer) {
buffer.append("wrapsCallback(mockCallback)");
}
}
}