mirror of
https://github.com/Instagram/IGListKit
synced 2026-05-22 08:48:21 +00:00
f92b9339ee
Summary: The standardized Meta copyright notice is "Copyright (c) Meta Platforms, Inc. and affiliates." and not "Copyright (c) Meta Platforms, Inc. and its affiliates." (Dropping the "its") This diff updates the copyright notice in each source file to the correct this. Reviewed By: willbailey Differential Revision: D44737667 fbshipit-source-id: 643bf36df76723e70d9d826c53cf8f29b8a0c8cc
484 lines
22 KiB
Objective-C
484 lines
22 KiB
Objective-C
/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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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 "IGListAdapterInternal.h"
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#import "IGListTestCase.h"
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#import "IGTestBindingWithoutDeselectionDelegate.h"
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#import "IGTestCell.h"
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#import "IGTestDiffingDataSource.h"
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#import "IGTestDiffingObject.h"
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#import "IGTestDiffingSectionController.h"
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#import "IGTestInvalidateLayoutDataSource.h"
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#import "IGTestInvalidateLayoutObject.h"
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#import "IGTestNumberBindableCell.h"
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#import "IGTestObject.h"
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#import "IGTestStringBindableCell.h"
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@interface IGListBindingSectionControllerTests : IGListTestCase
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@end
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@implementation IGListBindingSectionControllerTests
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- (void)setUp {
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self.dataSource = [IGTestDiffingDataSource new];
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// give us more room to show cells
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self.frame = CGRectMake(0, 0, 100, 1000);
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[super setUp];
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}
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- (id)cellAtSection:(NSInteger)section item:(NSInteger)item {
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return [self.collectionView cellForItemAtIndexPath:[NSIndexPath indexPathForItem:item inSection:section]];
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}
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- (void)test_whenInitialLoad_withEmptyViewModels_thatCollectionViewEmpty {
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[self setupWithObjects:@[
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[[IGTestDiffingObject alloc] initWithKey:@1 objects:@[]]
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]];
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XCTAssertEqual([self.collectionView numberOfSections], 1);
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XCTAssertEqual([self.collectionView numberOfItemsInSection:0], 0);
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}
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- (void)test_whenInitialLoad_withMultipleViewModels_thatCellsMappedAndConfigured {
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[self setupWithObjects:@[
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[[IGTestDiffingObject alloc] initWithKey:@1 objects:@[@7, @"seven"]],
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[[IGTestDiffingObject alloc] initWithKey:@2 objects:@[@"foo", @"bar", @42]],
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[[IGTestDiffingObject alloc] initWithKey:@3 objects:@[]],
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]];
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XCTAssertEqual([self.collectionView numberOfSections], 3);
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XCTAssertEqual([self.collectionView numberOfItemsInSection:0], 2);
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XCTAssertEqual([self.collectionView numberOfItemsInSection:1], 3);
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XCTAssertEqual([self.collectionView numberOfItemsInSection:2], 0);
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IGTestNumberBindableCell *cell00 = [self cellAtSection:0 item:0];
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IGTestStringBindableCell *cell01 = [self cellAtSection:0 item:1];
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IGTestStringBindableCell *cell10 = [self cellAtSection:1 item:0];
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IGTestStringBindableCell *cell11 = [self cellAtSection:1 item:1];
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IGTestNumberBindableCell *cell12 = [self cellAtSection:1 item:2];
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XCTAssertEqualObjects(cell00.textField.text, @"7");
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XCTAssertEqualObjects(cell01.label.text, @"seven");
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XCTAssertEqualObjects(cell10.label.text, @"foo");
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XCTAssertEqualObjects(cell11.label.text, @"bar");
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XCTAssertEqualObjects(cell12.textField.text, @"42");
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}
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- (void)test_withDuplicateDiffIdentifiers_thatDuplicatesAreRemoved {
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[self setupWithObjects:@[
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[[IGTestDiffingObject alloc] initWithKey:@1 objects:@[@7, @7]],
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]];
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XCTAssertEqual([self.collectionView numberOfSections], 1);
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XCTAssertEqual([self.collectionView numberOfItemsInSection:0], 1);
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IGTestNumberBindableCell *cell00 = [self cellAtSection:0 item:0];
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XCTAssertEqualObjects(cell00.textField.text, @"7");
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}
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- (void)test_whenUpdating_withAddedModels_thatCellsCorrectAndConfigured {
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[self setupWithObjects:@[
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[[IGTestDiffingObject alloc] initWithKey:@1 objects:@[@7, @"seven"]],
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]];
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self.dataSource.objects = @[
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[[IGTestDiffingObject alloc] initWithKey:@1 objects:@[@7, @"seven", @8, @"eight"]],
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];
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XCTestExpectation *expectation = [self expectationWithDescription:NSStringFromSelector(_cmd)];
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[self.adapter performUpdatesAnimated:YES completion:^(BOOL finished) {
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XCTAssertEqual([self.collectionView numberOfSections], 1);
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XCTAssertEqual([self.collectionView numberOfItemsInSection:0], 4);
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IGTestNumberBindableCell *cell00 = [self cellAtSection:0 item:0];
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IGTestStringBindableCell *cell01 = [self cellAtSection:0 item:1];
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IGTestNumberBindableCell *cell02 = [self cellAtSection:0 item:2];
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IGTestStringBindableCell *cell03 = [self cellAtSection:0 item:3];
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XCTAssertEqualObjects(cell00.textField.text, @"7");
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XCTAssertEqualObjects(cell01.label.text, @"seven");
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XCTAssertEqualObjects(cell02.textField.text, @"8");
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XCTAssertEqualObjects(cell03.label.text, @"eight");
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[expectation fulfill];
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}];
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[self waitForExpectationsWithTimeout:30 handler:nil];
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}
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- (void)test_whenUpdating_withNotUniqueModels_thatCellsCorrectAndConfigured {
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[self setupWithObjects:@[
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[[IGTestDiffingObject alloc] initWithKey:@1 objects:@[@7, @"seven"]],
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]];
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[self.adapter reloadObjects:@[[[IGTestDiffingObject alloc] initWithKey:@1 objects:@[@"four", @4, @"seven", @7, @10]]]];
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IGTestNumberBindableCell *cell00 = [self cellAtSection:0 item:0];
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IGTestStringBindableCell *cell01 = [self cellAtSection:0 item:1];
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XCTAssertEqualObjects(cell00.textField.text, @"7");
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XCTAssertEqualObjects(cell01.label.text, @"seven");
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XCTAssertNil([self cellAtSection:0 item:2]);
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XCTAssertNil([self cellAtSection:0 item:3]);
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// "fake" batch updates to make sure that calling reload triggers a diffed batch update
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XCTestExpectation *expectation = [self expectationWithDescription:NSStringFromSelector(_cmd)];
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[self.adapter performBatchAnimated:YES updates:^(id<IGListBatchContext> batchContext){} completion:^(BOOL finished) {
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IGTestStringBindableCell *batchedCell00 = [self cellAtSection:0 item:0];
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IGTestNumberBindableCell *batchedCell01 = [self cellAtSection:0 item:1];
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IGTestStringBindableCell *batchedCell02 = [self cellAtSection:0 item:2];
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IGTestNumberBindableCell *batchedCell03 = [self cellAtSection:0 item:3];
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IGTestNumberBindableCell *batchedCell04 = [self cellAtSection:0 item:4];
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XCTAssertEqualObjects(batchedCell00.label.text, @"four");
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XCTAssertEqualObjects(batchedCell01.textField.text, @"4");
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XCTAssertEqualObjects(batchedCell02.label.text, @"seven");
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XCTAssertEqualObjects(batchedCell03.textField.text, @"7");
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XCTAssertEqualObjects(batchedCell04.textField.text, @"10");
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[expectation fulfill];
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}];
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[self waitForExpectationsWithTimeout:30 handler:nil];
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}
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- (void)test_whenSelectingCell_thatCorrectViewModelSelected {
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[self setupWithObjects:@[
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[[IGTestDiffingObject alloc] initWithKey:@1 objects:@[@7, @"seven"]],
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]];
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[self.adapter collectionView:self.collectionView didSelectItemAtIndexPath:[NSIndexPath indexPathForItem:1 inSection:0]];
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IGTestDiffingSectionController *section = [self.adapter sectionControllerForObject:self.dataSource.objects.firstObject];
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XCTAssertEqualObjects(section.selectedViewModel, @"seven");
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}
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- (void)test_whenDeselectingCell_thatCorrectViewModelSelected {
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[self setupWithObjects:@[
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[[IGTestDiffingObject alloc] initWithKey:@1 objects:@[@7, @"seven"]],
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]];
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[self.adapter collectionView:self.collectionView didDeselectItemAtIndexPath:[NSIndexPath indexPathForItem:1 inSection:0]];
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IGTestDiffingSectionController *section = [self.adapter sectionControllerForObject:self.dataSource.objects.firstObject];
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XCTAssertEqualObjects(section.deselectedViewModel, @"seven");
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}
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- (void)test_whenHighlightingCell_thatCorrectViewModelHighlighted {
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[self setupWithObjects:@[
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[[IGTestDiffingObject alloc] initWithKey:@1 objects:@[@7, @"seven"]],
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]];
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[self.adapter collectionView:self.collectionView didHighlightItemAtIndexPath:[NSIndexPath indexPathForItem:1 inSection:0]];
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IGTestDiffingSectionController *section = [self.adapter sectionControllerForObject:self.dataSource.objects.firstObject];
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XCTAssertEqualObjects(section.highlightedViewModel, @"seven");
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}
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- (void)test_whenUnhighlightingCell_thatCorrectViewModelUnhighlighted {
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[self setupWithObjects:@[
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[[IGTestDiffingObject alloc] initWithKey:@1 objects:@[@7, @"seven"]],
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]];
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[self.adapter collectionView:self.collectionView didUnhighlightItemAtIndexPath:[NSIndexPath indexPathForItem:1 inSection:0]];
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IGTestDiffingSectionController *section = [self.adapter sectionControllerForObject:self.dataSource.objects.firstObject];
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XCTAssertEqualObjects(section.unhighlightedViewModel, @"seven");
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}
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- (void)test_whenDeselectingCell_withoutImplementation_thatNoOps {
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[self setupWithObjects:@[
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[[IGTestDiffingObject alloc] initWithKey:@1 objects:@[@7, @"seven"]],
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]];
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IGTestBindingWithoutDeselectionDelegate *delegate = [IGTestBindingWithoutDeselectionDelegate new];
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IGTestDiffingSectionController *section = [self.adapter sectionControllerForObject:self.dataSource.objects.firstObject];
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section.selectionDelegate = delegate;
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[self.adapter collectionView:self.collectionView didDeselectItemAtIndexPath:[NSIndexPath indexPathForItem:1 inSection:0]];
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XCTAssertFalse(delegate.selected);
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[self.adapter collectionView:self.collectionView didSelectItemAtIndexPath:[NSIndexPath indexPathForItem:1 inSection:0]];
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XCTAssertTrue(delegate.selected);
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}
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- (void)test_whenAdapterReloadsObjects_thatSectionUpdated {
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[self setupWithObjects:@[
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[[IGTestDiffingObject alloc] initWithKey:@1 objects:@[@7, @"seven"]],
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]];
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[self.adapter reloadObjects:@[[[IGTestDiffingObject alloc] initWithKey:@1 objects:@[@"four", @4, @"seven", @7]]]];
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IGTestNumberBindableCell *cell00 = [self cellAtSection:0 item:0];
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IGTestStringBindableCell *cell01 = [self cellAtSection:0 item:1];
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XCTAssertEqualObjects(cell00.textField.text, @"7");
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XCTAssertEqualObjects(cell01.label.text, @"seven");
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XCTAssertNil([self cellAtSection:0 item:2]);
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XCTAssertNil([self cellAtSection:0 item:3]);
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// "fake" batch updates to make sure that calling reload triggers a diffed batch update
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XCTestExpectation *expectation = [self expectationWithDescription:NSStringFromSelector(_cmd)];
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[self.adapter performBatchAnimated:YES updates:^(id<IGListBatchContext> batchContext){} completion:^(BOOL finished) {
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IGTestStringBindableCell *batchedCell00 = [self cellAtSection:0 item:0];
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IGTestNumberBindableCell *batchedCell01 = [self cellAtSection:0 item:1];
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IGTestStringBindableCell *batchedCell02 = [self cellAtSection:0 item:2];
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IGTestNumberBindableCell *batchedCell03 = [self cellAtSection:0 item:3];
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XCTAssertEqualObjects(batchedCell00.label.text, @"four");
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XCTAssertEqualObjects(batchedCell01.textField.text, @"4");
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XCTAssertEqualObjects(batchedCell02.label.text, @"seven");
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XCTAssertEqualObjects(batchedCell03.textField.text, @"7");
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[expectation fulfill];
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}];
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[self waitForExpectationsWithTimeout:30 handler:nil];
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}
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- (void)test_whenUpdating_withViewModelMovesAndReloads_thatCellUpdatedAndInstanceSame {
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NSArray *initObjects = @[
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@"foo",
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@"bar",
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[[IGTestObject alloc] initWithKey:@42 value:@"baz"]
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];
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[self setupWithObjects:@[
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[[IGTestDiffingObject alloc] initWithKey:@1 objects:initObjects]
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]];
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XCTAssertEqual([self.collectionView numberOfItemsInSection:0], 3);
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IGTestStringBindableCell *cell00 = [self cellAtSection:0 item:0];
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IGTestStringBindableCell *cell01 = [self cellAtSection:0 item:1];
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IGTestCell *cell02 = [self cellAtSection:0 item:2];
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XCTAssertEqualObjects(cell00.label.text, @"foo");
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XCTAssertEqualObjects(cell01.label.text, @"bar");
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XCTAssertEqualObjects(cell02.label.text, @"baz");
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NSArray *newObjects = @[
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[[IGTestObject alloc] initWithKey:@42 value:@"bang"], // moved to section 0 and value changed
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@"foo",
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@"bar",
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];
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self.dataSource.objects = @[
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[[IGTestDiffingObject alloc] initWithKey:@1 objects:newObjects]
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];
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XCTestExpectation *expectation = [self expectationWithDescription:NSStringFromSelector(_cmd)];
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[self.adapter performUpdatesAnimated:YES completion:^(BOOL finished) {
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IGTestCell *batchedCell00 = [self cellAtSection:0 item:0];
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IGTestStringBindableCell *batchedCell01 = [self cellAtSection:0 item:1];
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IGTestStringBindableCell *batchedCell02 = [self cellAtSection:0 item:2];
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XCTAssertEqualObjects(batchedCell00.label.text, @"bang");
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XCTAssertEqualObjects(batchedCell01.label.text, @"foo");
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XCTAssertEqualObjects(batchedCell02.label.text, @"bar");
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XCTAssertEqual(cell00, batchedCell01);
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XCTAssertEqual(cell01, batchedCell02);
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XCTAssertEqual(cell02, batchedCell00);
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[expectation fulfill];
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}];
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[self waitForExpectationsWithTimeout:30 handler:nil];
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}
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- (void)test_whenUpdating_withViewModelDeletionsMovesAndReloads_thatCellUpdatedAndInstanceSame {
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NSArray *startingSection0 = @[
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@"0",
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@"1",
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[[IGTestObject alloc] initWithKey:@0 value:@"2"]
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];
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NSArray *startingSection1 = @[
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@"a",
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@"b",
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[[IGTestObject alloc] initWithKey:@1 value:@"c"],
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[[IGTestObject alloc] initWithKey:@2 value:@"d"],
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];
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[self setupWithObjects:@[
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[[IGTestDiffingObject alloc] initWithKey:@0 objects:startingSection0],
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[[IGTestDiffingObject alloc] initWithKey:@1 objects:startingSection1]
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]];
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XCTAssertEqual([self.collectionView numberOfItemsInSection:0], 3);
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XCTAssertEqual([self.collectionView numberOfItemsInSection:1], 4);
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IGTestStringBindableCell *cell10 = [self cellAtSection:1 item:0];
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IGTestStringBindableCell *cell11 = [self cellAtSection:1 item:1];
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IGTestCell *cell12 = [self cellAtSection:1 item:2];
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IGTestCell *cell13 = [self cellAtSection:1 item:3];
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XCTAssertEqualObjects(cell10.label.text, @"a");
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XCTAssertEqualObjects(cell11.label.text, @"b");
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XCTAssertEqualObjects(cell12.label.text, @"c");
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XCTAssertEqualObjects(cell13.label.text, @"d");
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// Moves:
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// - Delete section 0.
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// - Modify section 1 in several ways:
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NSArray *newSection1 = @[
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[[IGTestObject alloc] initWithKey:@1 value:@"e"], // Index: 2 -> 0, Value: "c" -> "e"
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@"b", // No change.
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@"a", // Index: 0 -> 2
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[[IGTestObject alloc] initWithKey:@2 value:@"f"], // Value: "d" -> "f"
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];
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self.dataSource.objects = @[
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[[IGTestDiffingObject alloc] initWithKey:@1 objects:newSection1]
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];
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XCTestExpectation *expectation = [self expectationWithDescription:NSStringFromSelector(_cmd)];
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[self.adapter performUpdatesAnimated:YES completion:^(BOOL finished) {
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IGTestCell *batchedCell00 = [self cellAtSection:0 item:0];
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IGTestStringBindableCell *batchedCell01 = [self cellAtSection:0 item:1];
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IGTestStringBindableCell *batchedCell02 = [self cellAtSection:0 item:2];
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IGTestCell *batchedCell03 = [self cellAtSection:0 item:3];
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XCTAssertEqualObjects(batchedCell00.label.text, @"e");
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XCTAssertEqualObjects(batchedCell01.label.text, @"b");
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XCTAssertEqualObjects(batchedCell02.label.text, @"a");
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XCTAssertEqualObjects(batchedCell03.label.text, @"f");
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XCTAssertEqual(cell10, batchedCell02);
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XCTAssertEqual(cell11, batchedCell01);
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XCTAssertEqual(cell12, batchedCell00);
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XCTAssertEqual(cell13, batchedCell03);
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[expectation fulfill];
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}];
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[self waitForExpectationsWithTimeout:30 handler:nil];
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}
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- (void)test_whenUpdatingManually_with2Updates_thatBothCompletionBlocksCalled {
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[self setupWithObjects:@[
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[[IGTestDiffingObject alloc] initWithKey:@1 objects:@[@7, @"seven"]],
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]];
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IGTestDiffingSectionController *section = [self.adapter sectionControllerForObject:self.dataSource.objects[0]];
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XCTestExpectation *expectation1 = [self expectationWithDescription:NSStringFromSelector(_cmd)];
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[section updateAnimated:YES completion:^(BOOL updated) {
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XCTAssertTrue(updated);
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[expectation1 fulfill];
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}];
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XCTestExpectation *expectation2 = [self expectationWithDescription:NSStringFromSelector(_cmd)];
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[section updateAnimated:YES completion:^(BOOL updated) {
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// queued second, shouldn't execute update block
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XCTAssertFalse(updated);
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[expectation2 fulfill];
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}];
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[self waitForExpectationsWithTimeout:30 handler:nil];
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}
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- (void)test_whenUpdating_withMutableArrayObject_thatViewModelsDontMutate {
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NSArray *objects = @[
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@"foo",
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@"bar"
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];
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NSMutableArray *initObjects = [NSMutableArray arrayWithArray:objects];
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[self setupWithObjects:@[
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[[IGTestDiffingObject alloc] initWithKey:@1 objects:initObjects]
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]];
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IGTestDiffingSectionController *section = [self.adapter sectionControllerForObject:self.dataSource.objects.firstObject];
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XCTAssertNotEqual(initObjects, section.viewModels);
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XCTAssertEqualObjects(initObjects, section.viewModels);
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[initObjects removeAllObjects];
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XCTAssertNotEqualObjects(initObjects, section.viewModels);
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}
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- (void)test_whenUpdatingManully_withInvalidateLayoutForUpdates_thatCellSizeUpdatedToLatestSize_usingIGListCollectionViewLayout {
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self.dataSource = [[IGTestInvalidateLayoutDataSource alloc] init];
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self.adapter.dataSource = self.dataSource;
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NSArray<IGTestObject *> *startingSection0 = @[
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genInvalidateLayoutObject(@0, CGSizeMake(50, 30)),
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genInvalidateLayoutObject(@1, CGSizeMake(50, 40)),
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];
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NSArray<IGTestObject *> *startingSection1 = @[
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genInvalidateLayoutObject(@0, CGSizeMake(50, 50)),
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genInvalidateLayoutObject(@1, CGSizeMake(50, 60))
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];
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IGListCollectionViewLayout *layout = [[IGListCollectionViewLayout alloc] initWithStickyHeaders:NO topContentInset:0 stretchToEdge:NO];
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self.collectionView = [[UICollectionView alloc] initWithFrame:self.frame collectionViewLayout:layout];
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self.adapter.experiments |= IGListExperimentInvalidateLayoutForUpdates;
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[self setupWithObjects:@[
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[[IGTestInvalidateLayoutObject alloc] initWithKey:@0 objects:startingSection0],
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[[IGTestInvalidateLayoutObject alloc] initWithKey:@1 objects:startingSection1]
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]];
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XCTAssertEqual([self.collectionView numberOfItemsInSection:0], 2);
|
|
XCTAssertEqual([self.collectionView numberOfItemsInSection:1], 2);
|
|
|
|
IGTestCell *cell00 = [self cellAtSection:0 item:0];
|
|
IGTestCell *cell01 = [self cellAtSection:0 item:1];
|
|
IGTestCell *cell10 = [self cellAtSection:1 item:0];
|
|
IGTestCell *cell11 = [self cellAtSection:1 item:1];
|
|
|
|
IGAssertEqualSize(cell00.frame.size, 50, 30);
|
|
IGAssertEqualSize(cell01.frame.size, 50, 40);
|
|
IGAssertEqualSize(cell10.frame.size, 50, 50);
|
|
IGAssertEqualSize(cell11.frame.size, 50, 60);
|
|
|
|
NSArray<IGTestObject *> *newSection0 = @[
|
|
genInvalidateLayoutObject(@0, CGSizeMake(45, 30)), // Width: 50 -> 45
|
|
genInvalidateLayoutObject(@1, CGSizeMake(50, 55)), // Height: 40 -> 55
|
|
];
|
|
NSArray<IGTestObject *> *newSection1 = @[
|
|
genInvalidateLayoutObject(@0, CGSizeMake(50, 50)), // No change
|
|
genInvalidateLayoutObject(@1, CGSizeMake(20, 30)), // Size: (50, 60) -> (20, 30)
|
|
];
|
|
|
|
self.dataSource.objects = @[
|
|
[[IGTestInvalidateLayoutObject alloc] initWithKey:@0 objects:newSection0],
|
|
[[IGTestInvalidateLayoutObject alloc] initWithKey:@1 objects:newSection1]
|
|
];
|
|
|
|
XCTestExpectation *expectation = [self expectationWithDescription:NSStringFromSelector(_cmd)];
|
|
[self.adapter performUpdatesAnimated:YES completion:^(BOOL finished) {
|
|
IGTestCell *updatedCell00 = [self cellAtSection:0 item:0];
|
|
IGTestCell *updatedCell01 = [self cellAtSection:0 item:1];
|
|
IGTestCell *nochangedCell10 = [self cellAtSection:1 item:0];
|
|
IGTestCell *updatedCell11 = [self cellAtSection:1 item:1];
|
|
|
|
IGAssertEqualSize(updatedCell00.frame.size, 45, 30);
|
|
IGAssertEqualSize(updatedCell01.frame.size, 50, 55);
|
|
IGAssertEqualSize(nochangedCell10.frame.size, 50, 50);
|
|
IGAssertEqualSize(updatedCell11.frame.size, 20, 30);
|
|
|
|
[expectation fulfill];
|
|
}];
|
|
|
|
[self waitForExpectationsWithTimeout:30 handler:nil];
|
|
}
|
|
|
|
- (void)test_viewModelsUpdate_afterCellHasBeenMoved {
|
|
[self setupWithObjects:@[
|
|
[[IGTestDiffingObject alloc] initWithKey:@1 objects:@[@7, @"seven", @20]],
|
|
]];
|
|
|
|
IGTestDiffingSectionController *section = [self.adapter sectionControllerForObject:self.dataSource.objects.firstObject];
|
|
|
|
[section moveObjectFromIndex:0 toIndex:2];
|
|
XCTAssertEqual([section.viewModels firstObject], @"seven");
|
|
XCTAssertEqual([section.viewModels lastObject], @7);
|
|
|
|
[section moveObjectFromIndex:2 toIndex:1];
|
|
XCTAssertEqual([section.viewModels objectAtIndex: 1], @7);
|
|
XCTAssertEqual([section.viewModels lastObject], @20);
|
|
}
|
|
|
|
@end
|