{"id":2532,"date":"2017-04-04T10:18:09","date_gmt":"2017-04-04T06:18:09","guid":{"rendered":"https:\/\/blog.alwawee.ru\/?p=2532"},"modified":"2017-04-04T10:27:49","modified_gmt":"2017-04-04T06:27:49","slug":"ios-unit-test-examples-snippets","status":"publish","type":"post","link":"https:\/\/blog.alwawee.ru\/?p=2532","title":{"rendered":"iOS Unit Test Examples \/ Snippets"},"content":{"rendered":"

In this article I will post common iOS Unit testing examples for testing of: <\/p>\n

    \n
  1. Asynchronous loading of data using REST API<\/li>\n
  2. Loading of a UIView<\/li>\n
  3. Method call after UITableViewCell is clicked<\/li>\n
  4. Static UITableView sections have correct number of rows<\/li>\n
  5. Loading of a UIView from UIStoryboard<\/li>\n
  6. IBOutlet connection<\/li>\n
  7. Model logic<\/li>\n
  8. UITableViewCell subclass<\/li>\n
  9. IBAction \/ Method is implemented<\/li>\n
  10. Testing bundle name<\/li>\n<\/ol>\n

    Asynchronous loading of data using REST API<\/strong><\/p>\n

    \r\n\/\/ Testing REST API GET \/api\/cities\/ that returns an array of cities with id and name\r\n- (void)testCitiesAPI\r\n{\r\n    \/\/ We create XCTestExpectation object to test asynchronous loading\r\n    XCTestExpectation *testExpectation = [self expectationWithDescription:@\"testCitiesAPI\"];\r\n    \r\n    NSString *URLString = [NSString stringWithFormat:@\"\/api\/cities\/\"];\r\n    \r\n    [[RSHTTPClient sharedClient] GET:URLString parameters:nil progress:nil success:^(NSURLSessionTask *task, id responseObject) {\r\n        \r\n        NSArray *jsonArray = (NSArray *)responseObject;\r\n        \r\n        \/\/ Checking that jsonArray is not empty\r\n        XCTAssertNotNil(jsonArray);\r\n        \r\n        for (NSDictionary *dic in jsonArray) {\r\n            RSCity *city = [RSCity objectWithProperties:dic];\r\n            \r\n            \/\/ Checking consistency of a model object created from JSON dic\r\n            XCTAssertNotNil(city.name);\r\n            XCTAssertNotEqual(city.sid, 0);\r\n        }\r\n        \r\n        [testExpectation fulfill];\r\n        \r\n    } failure:^(NSURLSessionTask *task, NSError *error) {\r\n        \r\n        NSLog(@\"Error: %@\", error);\r\n        XCTFail(@\"Error in GET \/api\/cities\/\");\r\n        \r\n    }];\r\n    \r\n    \/\/ Waiting for 10 seconds untim fulfill is called when task is finished\r\n    [self waitForExpectationsWithTimeout:10 handler:^(NSError *error) {\r\n        \r\n    }];\r\n}\r\n<\/pre>\n
    Here [RSHTTPClient sharedClient]<\/em> is an instance of AFHTTPSessionManager<\/em> subclass. But it doesn’t matter, the main is the principle.<\/p>\n
    Loading of a UIView<\/strong><\/p>\n
    \r\n@interface RSBaseViewControllerTests : XCTestCase\r\n\r\n@property (nonatomic, strong) RSBaseViewController *vc;\r\n\r\n@end\r\n\r\n@implementation RSBaseViewControllerTests\r\n\r\n- (void)setUp {\r\n    [super setUp];\r\n    \r\n    self.vc = [[RSBaseViewController alloc] init];\r\n    [self.vc view];\r\n}\r\n\r\n- (void)tearDown {\r\n    self.vc = nil;\r\n    [super tearDown];\r\n}\r\n\r\n- (void)testThatViewLoads {\r\n    XCTAssertNotNil(self.vc.view);\r\n}\r\n\r\n@end\r\n<\/pre>\n
    Method call after UITableViewCell is clicked<\/strong><\/p>\n
    \r\n#import \"OCMock.h\"\r\n\r\n# Mock objects for Objective-C\r\npod 'OCMock', '~> 3.4'\r\n\r\n- (void)testThatHomekitRestoreCalled\r\n{\r\n    id mock = [OCMockObject partialMockForObject:self.vc];\r\n    \r\n    [[mock expect] restoreHomeKitClicked];\r\n    \r\n    NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:CCSettingsSectionRestoreHomeKit];\r\n    [self.vc tableView:self.vc.tableView didSelectRowAtIndexPath:indexPath];\r\n    \r\n    [mock verify];\r\n}\r\n<\/pre>\n
    Here we verify that method restoreHomeKitClicked<\/em> is called when user selects a specific row in UITableView<\/em>.<\/p>\n
    Static UITableView sections have correct number of rows<\/strong><\/p>\n
    \r\n- (void)testThatSectionsHaveCorrentNumberOfRows\r\n{\r\n    XCTAssertEqual([self.vc tableView:self.vc.tableView numberOfRowsInSection:CCSettingsSectionUpdate], 1);\r\n    XCTAssertEqual([self.vc tableView:self.vc.tableView numberOfRowsInSection:CCSettingsSectionGeneral], 2);\r\n    XCTAssertEqual([self.vc tableView:self.vc.tableView numberOfRowsInSection:CCSettingsSectionAdditional], 3);\r\n    XCTAssertEqual([self.vc tableView:self.vc.tableView numberOfRowsInSection:CCSettingsSectionRestoreHomeKit], 1);\r\n}\r\n<\/pre>\n
    Loading of a UIView from UIStoryboard<\/strong><\/p>\n
    \r\n- (void)setUp\r\n{\r\n    [super setUp];\r\n    \r\n    UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@\"Main\" bundle:nil];\r\n    self.vc = [storyboard instantiateViewControllerWithIdentifier:@\"RECameraListViewController\"];\r\n    [self.vc performSelectorOnMainThread:@selector(loadView) withObject:nil waitUntilDone:YES];\r\n    [self.vc view];\r\n}\r\n\r\n\r\n- (void)tearDown\r\n{\r\n    self.vc = nil;\r\n    [super tearDown];\r\n}\r\n\r\n\r\n#pragma mark - View loading tests\r\n\r\n- (void)testThatViewLoads\r\n{\r\n    XCTAssertNotNil(self.vc.view, @\"View not initiated properly\");\r\n}\r\n\r\n<\/pre>\n
    IBOutlet connection<\/strong><\/p>\n
    \r\n- (void)testOutlets {\r\n    XCTAssertNotNil(self.vc.vkButton);\r\n    XCTAssertNotNil(self.vc.fbButton);\r\n    XCTAssertNotNil(self.vc.googleButton);\r\n    XCTAssertNotNil(self.vc.agreementTextView);\r\n}\r\n<\/pre>\n
    Model logic<\/strong><\/p>\n
    \r\n- (void)testBalanceArrayCount\r\n{\r\n    CSAccount *account = [CSAccount sharedAccount];\r\n    NSArray *balanceArray = [account balanceArrayForNumberOfMonths:12];\r\n    \r\n    XCTAssertEqual([balanceArray count], 13);\r\n}\r\n<\/pre>\n
    Here we test that an array, that is formed inside our model has correct number of items. Model logic testing obviously can be different depending of logic itself.<\/p>\n
    UITableViewCell subclass<\/strong><\/p>\n
    \r\n- (void)testThatServerCellHasCorrectOutlets\r\n{\r\n    NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:0];\r\n    REServerCell *cell = (REServerCell *)[self.vc tableView:self.vc.tableView cellForRowAtIndexPath:indexPath];\r\n    XCTAssertNotNil(cell.cloudServerLabel, @\"Should connect cloudServerLabel IBOutlet.\");\r\n    XCTAssertNotNil(cell.controlCenterServerLabel, @\"Should connect controlCenterServerLabel IBOutlet.\");\r\n}\r\n\r\n\r\n- (void)testThatServerCellHasCorrectContents\r\n{\r\n    NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:0];\r\n    REServerCell *cell = (REServerCell *)[self.vc tableView:self.vc.tableView cellForRowAtIndexPath:indexPath];\r\n    \r\n    REServerItem *item = self.vc.tableData[0];\r\n    \r\n    NSString *cloudServerURL = cell.cloudServerLabel.text;\r\n    NSString *controlCenterServerURL = cell.controlCenterServerLabel.text;\r\n    \r\n    XCTAssertTrue([cloudServerURL isEqualToString:item.cloudServer]);\r\n    XCTAssertTrue([controlCenterServerURL isEqualToString:item.controlCenterServer]);\r\n}\r\n<\/pre>\n
    IBAction \/ Method is implemented<\/strong><\/p>\n
    \r\n- (void)testThatHelperHasCustomizeAppearanceMethod\r\n{\r\n    XCTAssertTrue([self.helper respondsToSelector:@selector(customizeAppearance)]);\r\n}\r\n<\/pre>\n
    Testing bundle name<\/strong><\/p>\n
    \r\n- (void)testThatBundleNameIsCorrect\r\n{\r\n    NSString *correctBundleName = @\"YourBundleName\";\r\n    NSDictionary *infoDic = [[NSBundle mainBundle] infoDictionary];\r\n    NSString *bundleName = infoDic[@\"CFBundleName\"];\r\n    XCTAssertTrue([bundleName isEqualToString:correctBundleName], @\"Strings are not equal %@ %@\", correctBundleName, bundleName);\r\n}\r\n<\/pre>\n
    The last is a rare case, but helps to prevent someone changing a bundle name of project accidentally.<\/p>\n","protected":false},"excerpt":{"rendered":"
    In this article I will post common iOS Unit testing examples for testing of: Asynchronous loading of data using REST API Loading of a UIView Method call after UITableViewCell is clicked Static UITableView sections have correct number of rows Loading of a UIView from UIStoryboard IBOutlet connection Model logic UITableViewCell subclass IBAction \/ Method is […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[187,193,191,192],"class_list":["post-2532","post","type-post","status-publish","format-standard","hentry","category-ios","tag-ios","tag-rest","tag-unit-testing","tag-xctestexpectation"],"yoast_head":"\niOS Unit Test Examples \/ Snippets - Denis Kutlubaev<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.alwawee.ru\/?p=2532\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"iOS Unit Test Examples \/ Snippets - 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