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HNKNetworkFetcherTests.m
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HNKNetworkFetcherTests.m
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//
// HNKNetworkFetcherTests.m
// Haneke
//
// Created by Hermes Pique on 8/20/14.
// Copyright (c) 2014 Hermes Pique. 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.
//
#import <XCTest/XCTest.h>
#import "HNKNetworkFetcher.h"
#import "UIImage+HanekeTestUtils.h"
#import "XCTestCase+HanekeTestUtils.h"
#import <OHHTTPStubs/OHHTTPStubs.h>
@interface HNKNetworkFetcherTests : XCTestCase
@end
@implementation HNKNetworkFetcherTests {
HNKNetworkFetcher *_sut;
NSURL *_URL;
}
- (void)setUp
{
_URL = [NSURL URLWithString:@"http://haneke.io/image.jpg"];
}
- (void)tearDown
{
[OHHTTPStubs removeAllStubs];
[super tearDown];
}
- (void)testURL
{
_sut = [[HNKNetworkFetcher alloc] initWithURL:_URL];
XCTAssertEqualObjects(_sut.URL, _URL, @"");
}
- (void)testKey
{
_sut = [[HNKNetworkFetcher alloc] initWithURL:_URL];
XCTAssertEqualObjects(_sut.key, _URL.absoluteString, @"");
}
- (void)testFetchImage_Success
{
UIImage *image = [UIImage hnk_imageWithColor:[UIColor whiteColor] size:CGSizeMake(5, 5)];
[OHHTTPStubs stubRequestsPassingTest:^BOOL(NSURLRequest *request) {
return [request.URL.absoluteString isEqualToString:_URL.absoluteString];
} withStubResponse:^OHHTTPStubsResponse*(NSURLRequest *request) {
NSData *data = UIImagePNGRepresentation(image);
return [OHHTTPStubsResponse responseWithData:data statusCode:200 headers:nil];
}];
_sut = [[HNKNetworkFetcher alloc] initWithURL:_URL];
[self hnk_testAsyncBlock:^(dispatch_semaphore_t semaphore) {
[_sut fetchImageWithSuccess:^(UIImage *resultImage) {
XCTAssertTrue([resultImage hnk_isEqualToImage:image], @"");
dispatch_semaphore_signal(semaphore);
} failure:^(NSError *error) {
XCTFail(@"Expected to succeed");
dispatch_semaphore_signal(semaphore);
}];
}];
}
- (void)testFetchImage_Failure_InvalidStatusCode_401
{
[self _testFetchImage_Failure_InvalidStatusCode:401];
}
- (void)testFetchImage_Failure_InvalidStatusCode_402
{
[self _testFetchImage_Failure_InvalidStatusCode:402];
}
- (void)testFetchImage_Failure_InvalidStatusCode_403
{
[self _testFetchImage_Failure_InvalidStatusCode:403];
}
- (void)testFetchImage_Failure_InvalidStatusCode_404
{
[self _testFetchImage_Failure_InvalidStatusCode:404];
}
- (void)testFetchImage_Failure_DownloadError
{
NSError *error = [NSError errorWithDomain:NSURLErrorDomain code:kCFURLErrorNotConnectedToInternet userInfo:nil];
[OHHTTPStubs stubRequestsPassingTest:^BOOL(NSURLRequest *request) {
return [request.URL.absoluteString isEqualToString:_URL.absoluteString];
} withStubResponse:^OHHTTPStubsResponse*(NSURLRequest *request) {
return [OHHTTPStubsResponse responseWithError:error];
}];
_sut = [[HNKNetworkFetcher alloc] initWithURL:_URL];
[self hnk_testAsyncBlock:^(dispatch_semaphore_t semaphore) {
[_sut fetchImageWithSuccess:^(UIImage *resultImage) {
XCTFail(@"Expected to fail");
dispatch_semaphore_signal(semaphore);
} failure:^(NSError *resultError) {
XCTAssertEqual(resultError.code, error.code, @"");
dispatch_semaphore_signal(semaphore);
}];
}];
}
- (void)testFetchImage_Failure_HNKNetworkFetcherInvalidDataError
{
[OHHTTPStubs stubRequestsPassingTest:^BOOL(NSURLRequest *request) {
return [request.URL.absoluteString isEqualToString:_URL.absoluteString];
} withStubResponse:^OHHTTPStubsResponse*(NSURLRequest *request) {
NSData *data = [NSData data];
return [OHHTTPStubsResponse responseWithData:data statusCode:200 headers:nil];
}];
_sut = [[HNKNetworkFetcher alloc] initWithURL:_URL];
[self hnk_testAsyncBlock:^(dispatch_semaphore_t semaphore) {
[_sut fetchImageWithSuccess:^(UIImage *resultImage) {
XCTFail(@"Expected to fail");
dispatch_semaphore_signal(semaphore);
} failure:^(NSError *error) {
XCTAssertEqualObjects(error.domain, HNKErrorDomain, @"");
XCTAssertEqual(error.code, HNKErrorNetworkFetcherInvalidData, @"");
XCTAssertNotNil(error.localizedDescription, @"");
XCTAssertEqualObjects(error.userInfo[NSURLErrorKey], _URL, @"");
dispatch_semaphore_signal(semaphore);
}];
}];
}
- (void)testFetchImage_Failure_HNKNetworkFetcherMissingDataError
{
[OHHTTPStubs stubRequestsPassingTest:^BOOL(NSURLRequest *request) {
return [request.URL.absoluteString isEqualToString:_URL.absoluteString];
} withStubResponse:^OHHTTPStubsResponse*(NSURLRequest *request) {
UIImage *image = [UIImage hnk_imageWithColor:[UIColor whiteColor] size:CGSizeMake(5, 5)];
NSData *data = UIImageJPEGRepresentation(image, 1);
NSString *contentLengthString = [NSString stringWithFormat:@"%ld", (long)data.length * 10];
OHHTTPStubsResponse *response = [OHHTTPStubsResponse responseWithData:data statusCode:200 headers:nil];
response.httpHeaders = @{@"Content-Length": contentLengthString}; // See: https://github.com/AliSoftware/OHHTTPStubs/pull/62
return response;
}];
_sut = [[HNKNetworkFetcher alloc] initWithURL:_URL];
[self hnk_testAsyncBlock:^(dispatch_semaphore_t semaphore) {
[_sut fetchImageWithSuccess:^(UIImage *resultImage) {
XCTFail(@"Expected to fail");
dispatch_semaphore_signal(semaphore);
} failure:^(NSError *error) {
XCTAssertEqualObjects(error.domain, HNKErrorDomain, @"");
XCTAssertEqual(error.code, HNKErrorNetworkFetcherMissingData, @"");
XCTAssertNotNil(error.localizedDescription, @"");
XCTAssertEqualObjects(error.userInfo[NSURLErrorKey], _URL, @"");
dispatch_semaphore_signal(semaphore);
}];
}];
}
- (void)testCancelFetch
{
UIImage *image = [UIImage hnk_imageWithColor:[UIColor whiteColor] size:CGSizeMake(5, 5)];
[OHHTTPStubs stubRequestsPassingTest:^BOOL(NSURLRequest *request) {
return [request.URL.absoluteString isEqualToString:_URL.absoluteString];
} withStubResponse:^OHHTTPStubsResponse*(NSURLRequest *request) {
NSData *data = UIImagePNGRepresentation(image);
return [OHHTTPStubsResponse responseWithData:data statusCode:200 headers:nil];
}];
_sut = [[HNKNetworkFetcher alloc] initWithURL:_URL];
[_sut fetchImageWithSuccess:^(UIImage *image) {
XCTFail(@"Unexpected success");
} failure:^(NSError *error) {
XCTFail(@"Unexpected failure");
}];
[_sut cancelFetch];
[self hnk_waitFor:0.1];
}
- (void)testCancelFetch_NoFetch
{
_sut = [[HNKNetworkFetcher alloc] initWithURL:_URL];
[_sut cancelFetch];
}
- (void)testURLSession
{
_sut = [[HNKNetworkFetcher alloc] initWithURL:_URL];
XCTAssertEqualObjects(_sut.URLSession, [NSURLSession sharedSession], @"");
}
#pragma mark Helpers
- (void)_testFetchImage_Failure_InvalidStatusCode:(int)statusCode
{
[OHHTTPStubs stubRequestsPassingTest:^BOOL(NSURLRequest *request) {
return [request.URL.absoluteString isEqualToString:_URL.absoluteString];
} withStubResponse:^OHHTTPStubsResponse*(NSURLRequest *request) {
NSData *data = [@"404" dataUsingEncoding:NSUTF8StringEncoding];
return [OHHTTPStubsResponse responseWithData:data statusCode:statusCode headers:nil];
}];
_sut = [[HNKNetworkFetcher alloc] initWithURL:_URL];
[self hnk_testAsyncBlock:^(dispatch_semaphore_t semaphore) {
[_sut fetchImageWithSuccess:^(UIImage *resultImage) {
XCTFail(@"Expected to fail");
dispatch_semaphore_signal(semaphore);
} failure:^(NSError *error) {
XCTAssertEqualObjects(error.domain, HNKErrorDomain, @"");
XCTAssertEqual(error.code, HNKErrorNetworkFetcherInvalidStatusCode, @"");
XCTAssertNotNil(error.localizedDescription, @"");
XCTAssertEqualObjects(error.userInfo[NSURLErrorKey], _URL, @"");
dispatch_semaphore_signal(semaphore);
}];
}];
}
@end