react-native/Examples/UIExplorer/UIExplorerIntegrationTests/RCTRootViewIntegrationTests.m

/**
 * Copyright (c) 2015-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 */

//vs

/**
 * The examples provided by Facebook are for non-commercial testing and
 * evaluation purposes only.
 *
 * Facebook reserves all rights not expressly granted.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NON INFRINGEMENT. IN NO EVENT SHALL
 * FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#import <UIKit/UIKit.h>
#import <XCTest/XCTest.h>

#import "RCTAssert.h"

#import "RCTEventDispatcher.h"
#import "RCTRootView.h"
#import "RCTRootViewDelegate.h"

#import <RCTTest/RCTTestRunner.h>

#define RCT_TEST_DATA_CONFIGURATION_BLOCK(appName, testType, input, block) \
- (void)test##appName##_##testType##_##input                               \
{                                                                          \
  [_runner runTest:_cmd                                                    \
            module:@#appName                                               \
      initialProps:@{@#input:@YES}                                         \
configurationBlock:block];                                                 \
}

#define RCT_TEST_CONFIGURATION_BLOCK(appName, block)  \
- (void)test##appName                                 \
{                                                     \
  [_runner runTest:_cmd                               \
            module:@#appName                          \
      initialProps:nil                                \
configurationBlock:block];                            \
}

#define RCTNone   RCTRootViewSizeFlexibilityNone
#define RCTHeight RCTRootViewSizeFlexibilityHeight
#define RCTWidth  RCTRootViewSizeFlexibilityWidth
#define RCTBoth   RCTRootViewSizeFlexibilityWidthAndHeight

typedef void (^ControlBlock)(RCTRootView*);

@interface SizeFlexibilityTestDelegate : NSObject<RCTRootViewDelegate>
@end

@implementation SizeFlexibilityTestDelegate

- (void)rootViewDidChangeIntrinsicSize:(RCTRootView *)rootView
{
  [rootView.bridge.eventDispatcher sendAppEventWithName:@"rootViewDidChangeIntrinsicSize"
                                                   body:@{@"width": @(rootView.intrinsicSize.width),
                                                          @"height": @(rootView.intrinsicSize.height)}];
}

@end

static SizeFlexibilityTestDelegate *sizeFlexibilityDelegate()
{
  static SizeFlexibilityTestDelegate *delegate;
  if (delegate == nil) {
    delegate = [SizeFlexibilityTestDelegate new];
  }

  return delegate;
}

static ControlBlock simpleSizeFlexibilityBlock(RCTRootViewSizeFlexibility sizeFlexibility)
{
  return ^(RCTRootView *rootView){
    rootView.delegate = sizeFlexibilityDelegate();
    rootView.sizeFlexibility = sizeFlexibility;
  };
}

static ControlBlock multipleSizeFlexibilityUpdatesBlock(RCTRootViewSizeFlexibility finalSizeFlexibility)
{
  return ^(RCTRootView *rootView){

    NSInteger arr[4] = {RCTNone,
                        RCTHeight,
                        RCTWidth,
                        RCTBoth};

    rootView.delegate = sizeFlexibilityDelegate();

    for (int i = 0; i < 4; ++i) {
      if (arr[i] != finalSizeFlexibility) {
        rootView.sizeFlexibility = arr[i];
      }
    }

    rootView.sizeFlexibility = finalSizeFlexibility;
  };
}

static ControlBlock reactContentSizeUpdateBlock(RCTRootViewSizeFlexibility sizeFlexibility)
{
  return ^(RCTRootView *rootView){
    rootView.delegate = sizeFlexibilityDelegate();
    rootView.sizeFlexibility = sizeFlexibility;
  };
}

static ControlBlock propertiesUpdateBlock()
{
  return ^(RCTRootView *rootView){
    rootView.appProperties = @{@"markTestPassed":@YES};
  };
}

@interface RCTRootViewIntegrationTests : XCTestCase

@end

@implementation RCTRootViewIntegrationTests
{
  RCTTestRunner *_runner;
}

- (void)setUp
{
#if __LP64__
  RCTAssert(NO, @"Tests should be run on 32-bit device simulators (e.g. iPhone 5)");
#endif

  NSOperatingSystemVersion version = [NSProcessInfo processInfo].operatingSystemVersion;
  RCTAssert((version.majorVersion == 8 && version.minorVersion >= 3) || version.majorVersion >= 9, @"Tests should be run on iOS 8.3+, found %zd.%zd.%zd", version.majorVersion, version.minorVersion, version.patchVersion);
  _runner = RCTInitRunnerForApp(@"IntegrationTests/RCTRootViewIntegrationTestApp", nil);
}

#pragma mark Logic Tests

// This list should be kept in sync with RCTRootViewIntegrationTestApp.js

// Simple size flexibility tests - test if the content is measured properly
RCT_TEST_DATA_CONFIGURATION_BLOCK(SizeFlexibilityUpdateTest, SingleUpdate, none, simpleSizeFlexibilityBlock(RCTNone));
RCT_TEST_DATA_CONFIGURATION_BLOCK(SizeFlexibilityUpdateTest, SingleUpdate, height, simpleSizeFlexibilityBlock(RCTHeight));
RCT_TEST_DATA_CONFIGURATION_BLOCK(SizeFlexibilityUpdateTest, SingleUpdate, width, simpleSizeFlexibilityBlock(RCTWidth));
RCT_TEST_DATA_CONFIGURATION_BLOCK(SizeFlexibilityUpdateTest, SingleUpdate, both, simpleSizeFlexibilityBlock(RCTBoth));

// Consider multiple size flexibility updates in a row. Test if the view's flexibility mode eventually is set to the expected value
RCT_TEST_DATA_CONFIGURATION_BLOCK(SizeFlexibilityUpdateTest, MultipleUpdates, none, multipleSizeFlexibilityUpdatesBlock(RCTNone));
RCT_TEST_DATA_CONFIGURATION_BLOCK(SizeFlexibilityUpdateTest, MultipleUpdates, height, multipleSizeFlexibilityUpdatesBlock(RCTHeight));
RCT_TEST_DATA_CONFIGURATION_BLOCK(SizeFlexibilityUpdateTest, MultipleUpdates, width, multipleSizeFlexibilityUpdatesBlock(RCTWidth));
RCT_TEST_DATA_CONFIGURATION_BLOCK(SizeFlexibilityUpdateTest, MultipleUpdates, both, multipleSizeFlexibilityUpdatesBlock(RCTBoth));

// Test if the 'rootViewDidChangeIntrinsicSize' delegate method is called after the RN app decides internally to resize
RCT_TEST_CONFIGURATION_BLOCK(ReactContentSizeUpdateTest, reactContentSizeUpdateBlock(RCTBoth))

// Test if setting 'appProperties' property updates the RN app
RCT_TEST_CONFIGURATION_BLOCK(PropertiesUpdateTest, propertiesUpdateBlock())

@end