mirror of
https://github.com/Instagram/IGListKit
synced 2026-05-15 05:18:18 +00:00
ebd8801f90
Summary: Rename *ItemController unit tests to *SectionController, addressing issue #126 - [x] All tests pass. Demo project builds and runs. - [x] I added tests, an experiment, or detailed why my change isn't tested. - [x] I have reviewed the [contributing guide](https://github.com/Instagram/IGListKit/blob/master/CONTRIBUTING.md) Closes https://github.com/Instagram/IGListKit/pull/129 Differential Revision: D4095496 Pulled By: rnystrom fbshipit-source-id: 277be38ed2789f14199cee9d711a838552921f10
434 lines
22 KiB
Objective-C
434 lines
22 KiB
Objective-C
/**
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* Copyright (c) 2016-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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#import <XCTest/XCTest.h>
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#import <OCMock/OCMock.h>
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#import <IGListKit/IGListKit.h>
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#import <IGListKit/IGListReloadDataUpdater.h>
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#import "IGListAdapterInternal.h"
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#import "IGListDisplayHandler.h"
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#import "IGListStackedSectionControllerInternal.h"
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#import "IGListTestSection.h"
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#import "IGTestStackedDataSource.h"
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static const CGRect kStackTestFrame = (CGRect){{0.0, 0.0}, {100.0, 100.0}};
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@interface IGListStackSectionControllerTests : XCTestCase
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@property (nonatomic, strong) UIWindow *window;
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@property (nonatomic, strong) IGListCollectionView *collectionView;
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@property (nonatomic, strong) IGListAdapter *adapter;
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@property (nonatomic, strong) IGTestStackedDataSource *dataSource;
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@end
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@implementation IGListStackSectionControllerTests
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- (void)setUp {
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[super setUp];
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self.window = [[UIWindow alloc] initWithFrame:kStackTestFrame];
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UICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayout alloc] init];
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self.collectionView = [[IGListCollectionView alloc] initWithFrame:kStackTestFrame collectionViewLayout:layout];
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[self.window addSubview:self.collectionView];
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self.dataSource = [[IGTestStackedDataSource alloc] init];
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self.adapter = [[IGListAdapter alloc] initWithUpdater:[IGListAdapterUpdater new] viewController:nil workingRangeSize:0];
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}
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- (void)tearDown {
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[super tearDown];
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self.adapter = nil;
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self.collectionView = nil;
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self.dataSource = nil;
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}
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- (void)setupWithObjects:(NSArray *)objects {
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self.dataSource.objects = objects;
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self.adapter.collectionView = self.collectionView;
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self.adapter.dataSource = self.dataSource;
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[self.collectionView layoutIfNeeded];
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}
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#pragma mark - Base
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- (void)test_whenInitializingStack_thatNumberOfItemsMatches {
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IGListTestSection *section1 = [[IGListTestSection alloc] init];
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section1.items = 2;
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IGListTestSection *section2 = [[IGListTestSection alloc] init];
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section2.items = 3;
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IGListTestSection *section3 = [[IGListTestSection alloc] init];
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section3.items = 0;
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IGListTestSection *section4 = [[IGListTestSection alloc] init];
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section4.items = 1;
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IGListStackedSectionController *stack = [[IGListStackedSectionController alloc] initWithSectionControllers:@[section1, section2, section3, section4]];
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XCTAssertEqual([stack numberOfItems], 6);
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}
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- (void)test_whenInitializingStack_thatSectionControllerIndexesMatch {
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IGListTestSection *section1 = [[IGListTestSection alloc] init];
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section1.items = 2;
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IGListTestSection *section2 = [[IGListTestSection alloc] init];
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section2.items = 3;
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IGListTestSection *section3 = [[IGListTestSection alloc] init];
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section3.items = 0;
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IGListTestSection *section4 = [[IGListTestSection alloc] init];
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section4.items = 1;
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IGListStackedSectionController *stack = [[IGListStackedSectionController alloc] initWithSectionControllers:@[section1, section2, section3, section4]];
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XCTAssertEqualObjects([stack sectionControllerForObjectIndex:0], section1);
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XCTAssertEqualObjects([stack sectionControllerForObjectIndex:1], section1);
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XCTAssertEqualObjects([stack sectionControllerForObjectIndex:2], section2);
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XCTAssertEqualObjects([stack sectionControllerForObjectIndex:3], section2);
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XCTAssertEqualObjects([stack sectionControllerForObjectIndex:4], section2);
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XCTAssertEqualObjects([stack sectionControllerForObjectIndex:5], section4);
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}
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- (void)test_whenInitializingStack_thatSectionControllerOffsetsMatch {
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IGListTestSection *section1 = [[IGListTestSection alloc] init];
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section1.items = 2;
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IGListTestSection *section2 = [[IGListTestSection alloc] init];
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section2.items = 3;
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IGListTestSection *section3 = [[IGListTestSection alloc] init];
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section3.items = 0;
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IGListTestSection *section4 = [[IGListTestSection alloc] init];
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section4.items = 1;
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IGListStackedSectionController *stack = [[IGListStackedSectionController alloc] initWithSectionControllers:@[section1, section2, section3, section4]];
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XCTAssertEqual([stack offsetForSectionController:section1], 0);
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XCTAssertEqual([stack offsetForSectionController:section2], 2);
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XCTAssertEqual([stack offsetForSectionController:section3], 5);
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XCTAssertEqual([stack offsetForSectionController:section4], 5);
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}
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#pragma mark - IGListCollectionContext
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- (void)test_whenReloadingStack_thatSectionControllerContainerMatchesCollectionView {
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[self setupWithObjects:@[
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[[IGTestObject alloc] initWithKey:@0 value:@[@1]]
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]];
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IGListStackedSectionController *stack = [self.adapter sectionControllerForObject:self.dataSource.objects[0]];
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IGListTestSection *section1 = stack.sectionControllers[0];
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XCTAssertTrue(CGSizeEqualToSize([section1.collectionContext containerSize], kStackTestFrame.size));
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}
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- (void)test_whenQueryingCellIndex_thatIndexIsRelativeToSectionController {
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[self setupWithObjects:@[
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[[IGTestObject alloc] initWithKey:@0 value:@[@1, @1, @2]]
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]];
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IGListStackedSectionController *stack = [self.adapter sectionControllerForObject:self.dataSource.objects[0]];
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IGListTestSection *section1 = stack.sectionControllers[0];
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UICollectionViewCell *cell1 = [self.collectionView cellForItemAtIndexPath:[NSIndexPath indexPathForItem:0 inSection:0]];
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IGListTestSection *section2 = stack.sectionControllers[1];
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UICollectionViewCell *cell2 = [self.collectionView cellForItemAtIndexPath:[NSIndexPath indexPathForItem:1 inSection:0]];
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IGListTestSection *section3 = stack.sectionControllers[2];
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UICollectionViewCell *cell30 = [self.collectionView cellForItemAtIndexPath:[NSIndexPath indexPathForItem:2 inSection:0]];
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UICollectionViewCell *cell31 = [self.collectionView cellForItemAtIndexPath:[NSIndexPath indexPathForItem:3 inSection:0]];
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// each controller in the stack has one cell, even though the item indexes are 0, 1, 2, 3
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XCTAssertEqual([section1.collectionContext indexForCell:cell1 sectionController:section1], 0);
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XCTAssertEqual([section2.collectionContext indexForCell:cell2 sectionController:section2], 0);
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XCTAssertEqual([section3.collectionContext indexForCell:cell30 sectionController:section3], 0);
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XCTAssertEqual([section3.collectionContext indexForCell:cell31 sectionController:section3], 1);
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}
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- (void)test_whenQueryingCells_thatCellIsRelativeToSectionController {
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[self setupWithObjects:@[
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[[IGTestObject alloc] initWithKey:@0 value:@[@1, @1, @2]]
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]];
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IGListStackedSectionController *stack = [self.adapter sectionControllerForObject:self.dataSource.objects[0]];
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IGListTestSection *section1 = stack.sectionControllers[0];
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UICollectionViewCell *cell1 = [self.collectionView cellForItemAtIndexPath:[NSIndexPath indexPathForItem:0 inSection:0]];
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IGListTestSection *section2 = stack.sectionControllers[1];
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UICollectionViewCell *cell2 = [self.collectionView cellForItemAtIndexPath:[NSIndexPath indexPathForItem:1 inSection:0]];
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IGListTestSection *section3 = stack.sectionControllers[2];
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UICollectionViewCell *cell30 = [self.collectionView cellForItemAtIndexPath:[NSIndexPath indexPathForItem:2 inSection:0]];
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UICollectionViewCell *cell31 = [self.collectionView cellForItemAtIndexPath:[NSIndexPath indexPathForItem:3 inSection:0]];
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// each controller in the stack has one cell, even though the item indexes are 0, 1, 2, 3
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XCTAssertEqualObjects([section1.collectionContext cellForItemAtIndex:0 sectionController:section1], cell1);
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XCTAssertEqualObjects([section2.collectionContext cellForItemAtIndex:0 sectionController:section2], cell2);
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XCTAssertEqualObjects([section3.collectionContext cellForItemAtIndex:0 sectionController:section3], cell30);
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XCTAssertEqualObjects([section3.collectionContext cellForItemAtIndex:1 sectionController:section3], cell31);
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}
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- (void)test_whenQueryingSectionControllerSection_thatSectionMatchesStackSection {
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[self setupWithObjects:@[
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[[IGTestObject alloc] initWithKey:@0 value:@[@1, @1]],
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[[IGTestObject alloc] initWithKey:@1 value:@[@1, @1]]
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]];
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IGListStackedSectionController *stack1 = [self.adapter sectionControllerForObject:self.dataSource.objects[0]];
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IGListStackedSectionController *stack2 = [self.adapter sectionControllerForObject:self.dataSource.objects[1]];
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IGListTestSection *section11 = stack1.sectionControllers[0];
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IGListTestSection *section12 = stack1.sectionControllers[1];
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IGListTestSection *section21 = stack2.sectionControllers[0];
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IGListTestSection *section22 = stack2.sectionControllers[1];
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XCTAssertEqual([stack1.collectionContext sectionForSectionController:stack1], 0);
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XCTAssertEqual([stack2.collectionContext sectionForSectionController:stack2], 1);
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XCTAssertEqual([section11.collectionContext sectionForSectionController:section11], 0);
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XCTAssertEqual([section12.collectionContext sectionForSectionController:section12], 0);
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XCTAssertEqual([section21.collectionContext sectionForSectionController:section21], 1);
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XCTAssertEqual([section22.collectionContext sectionForSectionController:section22], 1);
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}
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- (void)test_whenReloadingItems_thatCollectionViewReloadsRelativeIndexPaths {
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[self setupWithObjects:@[
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[[IGTestObject alloc] initWithKey:@0 value:@[@2, @2]]
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]];
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id mockCollectionView = [OCMockObject niceMockForClass:[IGListCollectionView class]];
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self.adapter.collectionView = mockCollectionView;
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IGListStackedSectionController *stack = [self.adapter sectionControllerForObject:self.dataSource.objects[0]];
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IGListTestSection *section2 = stack.sectionControllers[1];
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[[mockCollectionView expect] reloadItemsAtIndexPaths:@[
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[NSIndexPath indexPathForItem:3 inSection:0]
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]];
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[section2.collectionContext reloadInSectionController:section2 atIndexes:[NSIndexSet indexSetWithIndex:1]];
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[mockCollectionView verify];
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}
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- (void)test_whenInsertingItems_thatCollectionViewReloadsRelativeIndexPaths {
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[self setupWithObjects:@[
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[[IGTestObject alloc] initWithKey:@0 value:@[@2, @2]]
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]];
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id mockCollectionView = [OCMockObject niceMockForClass:[IGListCollectionView class]];
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self.adapter.collectionView = mockCollectionView;
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IGListStackedSectionController *stack = [self.adapter sectionControllerForObject:self.dataSource.objects[0]];
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IGListTestSection *section2 = stack.sectionControllers[1];
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section2.items = 3;
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[[mockCollectionView expect] insertItemsAtIndexPaths:@[
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[NSIndexPath indexPathForItem:4 inSection:0]
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]];
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[section2.collectionContext insertInSectionController:section2 atIndexes:[NSIndexSet indexSetWithIndex:2]];
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[mockCollectionView verify];
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XCTAssertEqual([stack numberOfItems], 5);
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}
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- (void)test_whenDeletingItems_thatCollectionViewReloadsRelativeIndexPaths {
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[self setupWithObjects:@[
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[[IGTestObject alloc] initWithKey:@0 value:@[@2, @2]]
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]];
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id mockCollectionView = [OCMockObject niceMockForClass:[IGListCollectionView class]];
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self.adapter.collectionView = mockCollectionView;
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IGListStackedSectionController *stack = [self.adapter sectionControllerForObject:self.dataSource.objects[0]];
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IGListTestSection *section2 = stack.sectionControllers[1];
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section2.items = 1;
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[[mockCollectionView expect] deleteItemsAtIndexPaths:@[
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[NSIndexPath indexPathForItem:3 inSection:0]
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]];
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[section2.collectionContext deleteInSectionController:section2 atIndexes:[NSIndexSet indexSetWithIndex:1]];
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[mockCollectionView verify];
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XCTAssertEqual([stack numberOfItems], 3);
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}
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- (void)test_whenReloadingSectionController_thatCollectionViewReloadsStack {
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[self setupWithObjects:@[
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[[IGTestObject alloc] initWithKey:@0 value:@[@2, @2]]
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]];
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id mockCollectionView = [OCMockObject niceMockForClass:[IGListCollectionView class]];
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self.adapter.collectionView = mockCollectionView;
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IGListStackedSectionController *stack = [self.adapter sectionControllerForObject:self.dataSource.objects[0]];
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IGListTestSection *section2 = stack.sectionControllers[1];
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section2.items = 3;
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// section 0 b/c any controller doing a full reload will queue reload of the entire stack
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[[mockCollectionView expect] reloadSections:[NSIndexSet indexSetWithIndex:0]];
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[section2.collectionContext reloadSectionController:section2];
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[mockCollectionView verify];
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XCTAssertEqual([stack numberOfItems], 5);
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}
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- (void)test_whenDisplayingCell_thatEventsForwardedToSectionControllers {
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id mock1Delegate = [OCMockObject mockForProtocol:@protocol(IGListDisplayDelegate)];
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id mock2Delegate = [OCMockObject mockForProtocol:@protocol(IGListDisplayDelegate)];
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IGListTestSection *section1 = [[IGListTestSection alloc] init];
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section1.items = 2;
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section1.displayDelegate = mock1Delegate;
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IGListTestSection *section2 = [[IGListTestSection alloc] init];
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section2.displayDelegate = mock2Delegate;
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section2.items = 2;
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UICollectionViewCell *cell1 = [UICollectionViewCell new];
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UICollectionViewCell *cell2 = [UICollectionViewCell new];
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[[mock1Delegate expect] listAdapter:self.adapter willDisplaySectionController:section1];
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[[mock1Delegate expect] listAdapter:self.adapter willDisplaySectionController:section1 cell:cell1 atIndex:0];
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[[mock1Delegate expect] listAdapter:self.adapter willDisplaySectionController:section1 cell:cell2 atIndex:1];
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[[mock2Delegate reject] listAdapter:self.adapter willDisplaySectionController:section2];
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IGListDisplayHandler *display = [[IGListDisplayHandler alloc] init];
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IGListStackedSectionController *stack = [[IGListStackedSectionController alloc] initWithSectionControllers:@[section1, section2]];
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[display willDisplayCell:cell1 forListAdapter:self.adapter sectionController:stack object:@"a" indexPath:[NSIndexPath indexPathForItem:0 inSection:0]];
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[display willDisplayCell:cell2 forListAdapter:self.adapter sectionController:stack object:@"a" indexPath:[NSIndexPath indexPathForItem:1 inSection:0]];
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[mock1Delegate verify];
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[mock2Delegate verify];
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}
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- (void)test_whenEndDisplayingCell_thatEventsForwardedToSectionControllers {
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id mock1Delegate = [OCMockObject mockForProtocol:@protocol(IGListDisplayDelegate)];
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id mock2Delegate = [OCMockObject mockForProtocol:@protocol(IGListDisplayDelegate)];
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IGListTestSection *section1 = [[IGListTestSection alloc] init];
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section1.items = 2;
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IGListTestSection *section2 = [[IGListTestSection alloc] init];
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section2.items = 2;
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UICollectionViewCell *cell1 = [UICollectionViewCell new];
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UICollectionViewCell *cell2 = [UICollectionViewCell new];
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UICollectionViewCell *cell3 = [UICollectionViewCell new];
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UICollectionViewCell *cell4 = [UICollectionViewCell new];
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IGListDisplayHandler *display = [[IGListDisplayHandler alloc] init];
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IGListStackedSectionController *stack = [[IGListStackedSectionController alloc] initWithSectionControllers:@[section1, section2]];
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// display all 4 cells (2 per child section controller)
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[display willDisplayCell:cell1 forListAdapter:self.adapter sectionController:stack object:@"a" indexPath:[NSIndexPath indexPathForItem:0 inSection:0]];
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[display willDisplayCell:cell2 forListAdapter:self.adapter sectionController:stack object:@"a" indexPath:[NSIndexPath indexPathForItem:1 inSection:0]];
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[display willDisplayCell:cell3 forListAdapter:self.adapter sectionController:stack object:@"a" indexPath:[NSIndexPath indexPathForItem:2 inSection:0]];
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[display willDisplayCell:cell4 forListAdapter:self.adapter sectionController:stack object:@"a" indexPath:[NSIndexPath indexPathForItem:3 inSection:0]];
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section1.displayDelegate = mock1Delegate;
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section2.displayDelegate = mock2Delegate;
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[[mock1Delegate expect] listAdapter:self.adapter didEndDisplayingSectionController:section1];
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[[mock1Delegate expect] listAdapter:self.adapter didEndDisplayingSectionController:section1 cell:cell1 atIndex:0];
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[[mock1Delegate expect] listAdapter:self.adapter didEndDisplayingSectionController:section1 cell:cell2 atIndex:1];
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[[mock2Delegate reject] listAdapter:self.adapter didEndDisplayingSectionController:section2];
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[display didEndDisplayingCell:cell1 forListAdapter:self.adapter sectionController:stack indexPath:[NSIndexPath indexPathForItem:0 inSection:0]];
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[display didEndDisplayingCell:cell2 forListAdapter:self.adapter sectionController:stack indexPath:[NSIndexPath indexPathForItem:1 inSection:0]];
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[mock1Delegate verify];
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[mock2Delegate verify];
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}
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- (void)test_whenRemovingCell_thatEventsForwardedToSectionControllers {
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[self setupWithObjects:@[
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[[IGTestObject alloc] initWithKey:@0 value:@[@1, @2]],
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[[IGTestObject alloc] initWithKey:@1 value:@[@1, @2]]
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]];
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IGTestObject *obj1 = self.dataSource.objects[0];
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IGTestObject *obj2 = self.dataSource.objects[1];
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self.dataSource.objects = @[obj1];
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id mockDelegate = [OCMockObject mockForProtocol:@protocol(IGListDisplayDelegate)];
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IGListStackedSectionController *stack = [self.adapter sectionControllerForObject:obj2];
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IGListTestSection *section1 = stack.sectionControllers[0];
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IGListTestSection *section2 = stack.sectionControllers[1];
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section1.displayDelegate = mockDelegate;
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section2.displayDelegate = mockDelegate;
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UICollectionViewCell *cell1 = [self.adapter.collectionView cellForItemAtIndexPath:[NSIndexPath indexPathForItem:0 inSection:1]];
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UICollectionViewCell *cell2 = [self.adapter.collectionView cellForItemAtIndexPath:[NSIndexPath indexPathForItem:1 inSection:1]];
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UICollectionViewCell *cell3 = [self.adapter.collectionView cellForItemAtIndexPath:[NSIndexPath indexPathForItem:2 inSection:1]];
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[[mockDelegate expect] listAdapter:self.adapter didEndDisplayingSectionController:section1];
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[[mockDelegate expect] listAdapter:self.adapter didEndDisplayingSectionController:section2];
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[[mockDelegate expect] listAdapter:self.adapter didEndDisplayingSectionController:section1 cell:cell1 atIndex:0];
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[[mockDelegate expect] listAdapter:self.adapter didEndDisplayingSectionController:section2 cell:cell2 atIndex:0];
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[[mockDelegate expect] listAdapter:self.adapter didEndDisplayingSectionController:section2 cell:cell3 atIndex:1];
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XCTestExpectation *expectation = [self expectationWithDescription:NSStringFromSelector(_cmd)];
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[self.adapter reloadDataWithCompletion:^(BOOL finished) {
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[mockDelegate verify];
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[expectation fulfill];
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}];
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[self waitForExpectationsWithTimeout:15 handler:nil];
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}
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- (void)test_whenQueryingVisibleSectionControllers_withCellsOffscreen_thatOnlyVisibleReturned {
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[self setupWithObjects:@[
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[[IGTestObject alloc] initWithKey:@0 value:@[@3, @4, @0, @5, @6]]
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]];
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IGListStackedSectionController *stack = [self.adapter sectionControllerForObject:self.dataSource.objects[0]];
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IGListTestSection *section1 = stack.sectionControllers[0];
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IGListTestSection *section2 = stack.sectionControllers[1];
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IGListTestSection *section3 = stack.sectionControllers[2];
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IGListTestSection *section4 = stack.sectionControllers[3];
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IGListTestSection *section5 = stack.sectionControllers[4];
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XCTAssertEqual([self.adapter visibleCellsForSectionController:stack].count, 10);
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XCTAssertEqual([stack visibleCellsForSectionController:section1].count, 3);
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XCTAssertEqual([stack visibleCellsForSectionController:section2].count, 4);
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XCTAssertEqual([stack visibleCellsForSectionController:section3].count, 0);
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|
XCTAssertEqual([stack visibleCellsForSectionController:section4].count, 3);
|
|
XCTAssertEqual([stack visibleCellsForSectionController:section5].count, 0);
|
|
}
|
|
|
|
- (void)test_whenPerformingItemUpdates_thatMutationsMapToSectionControllers {
|
|
[self setupWithObjects:@[
|
|
[[IGTestObject alloc] initWithKey:@0 value:@[@1, @2, @3]],
|
|
[[IGTestObject alloc] initWithKey:@1 value:@[@1, @2, @3]],
|
|
[[IGTestObject alloc] initWithKey:@2 value:@[@1, @1]]
|
|
]];
|
|
|
|
IGTestObject *object = self.dataSource.objects[1];
|
|
|
|
IGListStackedSectionController *stack = [self.adapter sectionControllerForObject:object];
|
|
IGListTestSection *section1 = stack.sectionControllers[0];
|
|
IGListTestSection *section2 = stack.sectionControllers[1];
|
|
|
|
XCTestExpectation *expectation = [self expectationWithDescription:NSStringFromSelector(_cmd)];
|
|
[section1.collectionContext performBatchAnimated:YES updates:^{
|
|
section1.items = 3;
|
|
[section1.collectionContext insertInSectionController:section1 atIndexes:[NSIndexSet indexSetWithIndexesInRange:NSMakeRange(1, 2)]];
|
|
} completion:^(BOOL finished2) {
|
|
XCTAssertEqual([self.collectionView numberOfSections], 3);
|
|
XCTAssertEqual([self.collectionView numberOfItemsInSection:0], 6);
|
|
XCTAssertEqual([self.collectionView numberOfItemsInSection:1], 7);
|
|
XCTAssertEqual([self.collectionView numberOfItemsInSection:2], 2);
|
|
[expectation fulfill];
|
|
}];
|
|
|
|
[section2.collectionContext performBatchAnimated:YES updates:^{
|
|
section2.items = 1;
|
|
[section2.collectionContext deleteInSectionController:section2 atIndexes:[NSIndexSet indexSetWithIndex:0]];
|
|
} completion:nil];
|
|
|
|
[self waitForExpectationsWithTimeout:15 handler:nil];
|
|
}
|
|
|
|
@end
|