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/*
*
* Copyright 2015, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#import <UIKit/UIKit.h>
#import <XCTest/XCTest.h>
#import <GRPCClient/GRPCCall.h>
#import <GRPCClient/GRPCCall+OAuth2.h>
#import <GRPCClient/GRPCCall+Tests.h>
#import <ProtoRPC/ProtoMethod.h>
#import <RemoteTest/Messages.pbobjc.h>
#import <RxLibrary/GRXWriteable.h>
#import <RxLibrary/GRXWriter+Immediate.h>
// These are a few tests similar to InteropTests, but which use the generic gRPC client (GRPCCall)
// rather than a generated proto library on top of it.
static NSString * const kHostAddress = @"localhost:5050";
static NSString * const kPackage = @"grpc.testing";
static NSString * const kService = @"TestService";
static ProtoMethod *kInexistentMethod;
static ProtoMethod *kEmptyCallMethod;
static ProtoMethod *kUnaryCallMethod;
// This is an observer class for testing that responseMetadata is KVO-compliant
@interface PassthroughObserver : NSObject
- (instancetype) initWithCallback:(void (^)(NSString*, id, NSDictionary*))callback;
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change
context:(void *)context;
@end
@implementation PassthroughObserver {
void (^_callback)(NSString*, id, NSDictionary*);
}
- (instancetype)initWithCallback:(void (^)(NSString *, id, NSDictionary *))callback {
self = [super init];
if (self) {
_callback = callback;
}
return self;
}
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context
{
_callback(keyPath, object, change);
[object removeObserver:self forKeyPath:keyPath];
}
@end
@interface GRPCClientTests : XCTestCase
@end
@implementation GRPCClientTests
- (void)setUp {
// Register test server as non-SSL.
[GRPCCall useInsecureConnectionsForHost:kHostAddress];
// This method isn't implemented by the remote server.
kInexistentMethod = [[ProtoMethod alloc] initWithPackage:kPackage
service:kService
method:@"Inexistent"];
kEmptyCallMethod = [[ProtoMethod alloc] initWithPackage:kPackage
service:kService
method:@"EmptyCall"];
kUnaryCallMethod = [[ProtoMethod alloc] initWithPackage:kPackage
service:kService
method:@"UnaryCall"];
}
- (void)testConnectionToRemoteServer {
__weak XCTestExpectation *expectation = [self expectationWithDescription:@"Server reachable."];
GRPCCall *call = [[GRPCCall alloc] initWithHost:kHostAddress
path:kInexistentMethod.HTTPPath
requestsWriter:[GRXWriter writerWithValue:[NSData data]]];
id<GRXWriteable> responsesWriteable = [[GRXWriteable alloc] initWithValueHandler:^(NSData *value) {
XCTFail(@"Received unexpected response: %@", value);
} completionHandler:^(NSError *errorOrNil) {
XCTAssertNotNil(errorOrNil, @"Finished without error!");
// TODO(jcanizales): The server should return code 12 UNIMPLEMENTED, not 5 NOT FOUND.
XCTAssertEqual(errorOrNil.code, 5, @"Finished with unexpected error: %@", errorOrNil);
[expectation fulfill];
}];
[call startWithWriteable:responsesWriteable];
[self waitForExpectationsWithTimeout:4 handler:nil];
}
- (void)testEmptyRPC {
__weak XCTestExpectation *response = [self expectationWithDescription:@"Empty response received."];
__weak XCTestExpectation *completion = [self expectationWithDescription:@"Empty RPC completed."];
GRPCCall *call = [[GRPCCall alloc] initWithHost:kHostAddress
path:kEmptyCallMethod.HTTPPath
requestsWriter:[GRXWriter writerWithValue:[NSData data]]];
id<GRXWriteable> responsesWriteable = [[GRXWriteable alloc] initWithValueHandler:^(NSData *value) {
XCTAssertNotNil(value, @"nil value received as response.");
XCTAssertEqual([value length], 0, @"Non-empty response received: %@", value);
[response fulfill];
} completionHandler:^(NSError *errorOrNil) {
XCTAssertNil(errorOrNil, @"Finished with unexpected error: %@", errorOrNil);
[completion fulfill];
}];
[call startWithWriteable:responsesWriteable];
[self waitForExpectationsWithTimeout:8 handler:nil];
}
- (void)testSimpleProtoRPC {
__weak XCTestExpectation *response = [self expectationWithDescription:@"Expected response."];
__weak XCTestExpectation *completion = [self expectationWithDescription:@"RPC completed."];
RMTSimpleRequest *request = [RMTSimpleRequest message];
request.responseSize = 100;
request.fillUsername = YES;
request.fillOauthScope = YES;
GRXWriter *requestsWriter = [GRXWriter writerWithValue:[request data]];
GRPCCall *call = [[GRPCCall alloc] initWithHost:kHostAddress
path:kUnaryCallMethod.HTTPPath
requestsWriter:requestsWriter];
id<GRXWriteable> responsesWriteable = [[GRXWriteable alloc] initWithValueHandler:^(NSData *value) {
XCTAssertNotNil(value, @"nil value received as response.");
XCTAssertGreaterThan(value.length, 0, @"Empty response received.");
RMTSimpleResponse *responseProto = [RMTSimpleResponse parseFromData:value error:NULL];
// We expect empty strings, not nil:
XCTAssertNotNil(responseProto.username, @"Response's username is nil.");
XCTAssertNotNil(responseProto.oauthScope, @"Response's OAuth scope is nil.");
[response fulfill];
} completionHandler:^(NSError *errorOrNil) {
XCTAssertNil(errorOrNil, @"Finished with unexpected error: %@", errorOrNil);
[completion fulfill];
}];
[call startWithWriteable:responsesWriteable];
[self waitForExpectationsWithTimeout:8 handler:nil];
}
- (void)testMetadata {
__weak XCTestExpectation *expectation = [self expectationWithDescription:@"RPC unauthorized."];
RMTSimpleRequest *request = [RMTSimpleRequest message];
request.fillUsername = YES;
request.fillOauthScope = YES;
GRXWriter *requestsWriter = [GRXWriter writerWithValue:[request data]];
GRPCCall *call = [[GRPCCall alloc] initWithHost:kHostAddress
path:kUnaryCallMethod.HTTPPath
requestsWriter:requestsWriter];
call.oauth2AccessToken = @"bogusToken";
id<GRXWriteable> responsesWriteable = [[GRXWriteable alloc] initWithValueHandler:^(NSData *value) {
XCTFail(@"Received unexpected response: %@", value);
} completionHandler:^(NSError *errorOrNil) {
XCTAssertNotNil(errorOrNil, @"Finished without error!");
XCTAssertEqual(errorOrNil.code, 16, @"Finished with unexpected error: %@", errorOrNil);
XCTAssertEqualObjects(call.responseHeaders, errorOrNil.userInfo[kGRPCHeadersKey],
@"Headers in the NSError object and call object differ.");
XCTAssertEqualObjects(call.responseTrailers, errorOrNil.userInfo[kGRPCTrailersKey],
@"Trailers in the NSError object and call object differ.");
NSString *challengeHeader = call.oauth2ChallengeHeader;
XCTAssertGreaterThan(challengeHeader.length, 0,
@"No challenge in response headers %@", call.responseHeaders);
[expectation fulfill];
}];
[call startWithWriteable:responsesWriteable];
[self waitForExpectationsWithTimeout:4 handler:nil];
}
- (void)testResponseMetadataKVO {
__weak XCTestExpectation *response = [self expectationWithDescription:@"Empty response received."];
__weak XCTestExpectation *completion = [self expectationWithDescription:@"Empty RPC completed."];
__weak XCTestExpectation *metadata = [self expectationWithDescription:@"Metadata changed."];
GRPCCall *call = [[GRPCCall alloc] initWithHost:kHostAddress
path:kEmptyCallMethod.HTTPPath
requestsWriter:[GRXWriter writerWithValue:[NSData data]]];
PassthroughObserver *observer = [[PassthroughObserver alloc] initWithCallback:^(NSString *keypath, id object, NSDictionary * change) {
if ([keypath isEqual: @"responseHeaders"]) {
[metadata fulfill];
}
}];
[call addObserver:observer forKeyPath:@"responseHeaders" options:0 context:NULL];
id<GRXWriteable> responsesWriteable = [[GRXWriteable alloc] initWithValueHandler:^(NSData *value) {
XCTAssertNotNil(value, @"nil value received as response.");
XCTAssertEqual([value length], 0, @"Non-empty response received: %@", value);
[response fulfill];
} completionHandler:^(NSError *errorOrNil) {
XCTAssertNil(errorOrNil, @"Finished with unexpected error: %@", errorOrNil);
[completion fulfill];
}];
[call startWithWriteable:responsesWriteable];
[self waitForExpectationsWithTimeout:8 handler:nil];
}
@end
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