mirror of
https://github.com/Instagram/IGListKit
synced 2026-05-14 21:08:48 +00:00
e2c2d3dcec
Summary: Working on porting our collection view layout to IGListKit. I'm doing this because its a solid layout, and we just finished preparing it to work with inline sections. It is designed to work in tandem with IGListKit, so we're adding it. This is still a WIP as I add more tests, but I'd love as much feedback as possible. Aside from the glob of header documentation, this has the following features: - Infinite sections that each have infinite items. Sections and items can fall inline. When they break the width of their container they will fall on the next row. - Sections can have their own insets, line spacing, and interitem spacing. - Sticky header support! When you use headers, it will always newline the section. - Maximum width with a border decoration view - Use this to pinch in your content on larger devices Followup to #423 - [ ] ~~Move decoration view support to delegate~~ removed - [x] Unit test changing [top y sticky inset](https://coveralls.io/builds/9977284/source?filen Closes https://github.com/Instagram/IGListKit/pull/484 Differential Revision: D4547760 Pulled By: rnystrom fbshipit-source-id: 879e2da16eb78bb6a90967e77d9ad0bbf7c69594
590 lines
37 KiB
Objective-C
590 lines
37 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 <IGListKit/IGListCollectionViewLayout.h>
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#import "IGLayoutTestDataSource.h"
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#import "IGLayoutTestItem.h"
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#import "IGLayoutTestSection.h"
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@interface IGListCollectionViewLayoutTests : XCTestCase
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@property (nonatomic, strong) IGListCollectionViewLayout *layout;
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@property (nonatomic, strong) UICollectionView *collectionView;
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@property (nonatomic, strong) IGLayoutTestDataSource *dataSource;
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@end
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static const CGRect kTestFrame = (CGRect){{0, 0}, {100, 100}};
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static NSIndexPath *quickPath(NSInteger section, NSInteger item) {
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return [NSIndexPath indexPathForItem:item inSection:section];
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}
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#define IGAssertEqualFrame(frame, x, y, w, h, ...) \
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do { \
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CGRect expected = CGRectMake(x, y, w, h); \
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XCTAssertEqual(CGRectGetMinX(expected), CGRectGetMinX(frame)); \
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XCTAssertEqual(CGRectGetMinY(expected), CGRectGetMinY(frame)); \
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XCTAssertEqual(CGRectGetWidth(expected), CGRectGetWidth(frame)); \
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XCTAssertEqual(CGRectGetHeight(expected), CGRectGetHeight(frame)); \
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} while(0)
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@implementation IGListCollectionViewLayoutTests
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- (UICollectionViewCell *)cellForSection:(NSInteger)section item:(NSInteger)item {
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return [self.collectionView cellForItemAtIndexPath:quickPath(section, item)];
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}
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- (UICollectionReusableView *)headerForSection:(NSInteger)section {
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return [self.collectionView supplementaryViewForElementKind:UICollectionElementKindSectionHeader atIndexPath:quickPath(section, 0)];
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}
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- (void)setUpWithStickyHeaders:(BOOL)sticky topInset:(CGFloat)inset {
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self.layout = [[IGListCollectionViewLayout alloc] initWithStickyHeaders:sticky topContentInset:inset];
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self.dataSource = [IGLayoutTestDataSource new];
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self.collectionView = [[UICollectionView alloc] initWithFrame:kTestFrame collectionViewLayout:self.layout];
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self.collectionView.dataSource = self.dataSource;
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self.collectionView.delegate = self.dataSource;
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[self.dataSource configCollectionView:self.collectionView];
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}
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- (void)tearDown {
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[super tearDown];
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self.collectionView = nil;
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self.layout = nil;
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self.dataSource = nil;
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}
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- (void)prepareWithData:(NSArray<IGLayoutTestSection *> *)data {
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self.dataSource.sections = data;
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[self.collectionView reloadData];
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[self.collectionView layoutIfNeeded];
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}
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- (void)test_whenEmptyData_thatContentSizeZero {
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[self setUpWithStickyHeaders:YES topInset:0];
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[self prepareWithData:nil];
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// check so that nil messaging doesn't default size to 0
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XCTAssertEqual(self.layout.collectionView, self.collectionView);
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XCTAssertTrue(CGSizeEqualToSize(CGSizeZero, self.collectionView.contentSize));
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}
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- (void)test_whenLayingOutCells_withHeaderHeight_withLineSpacing_withInsets_thatFramesCorrect {
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[self setUpWithStickyHeaders:NO topInset:0];
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const CGFloat headerHeight = 10;
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const CGFloat lineSpacing = 10;
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const UIEdgeInsets insets = UIEdgeInsetsMake(10, 10, 5, 5);
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[self prepareWithData:@[
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[[IGLayoutTestSection alloc] initWithInsets:insets
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lineSpacing:lineSpacing
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interitemSpacing:0
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headerHeight:headerHeight
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items:@[
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){85,10}],
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){85,20}],
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]],
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[[IGLayoutTestSection alloc] initWithInsets:insets
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lineSpacing:lineSpacing
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interitemSpacing:0
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headerHeight:headerHeight
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items:@[
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){85,30}],
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]],
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]];
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XCTAssertEqual(self.collectionView.contentSize.height, 120);
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IGAssertEqualFrame([self headerForSection:0].frame, 10, 10, 85, 10);
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IGAssertEqualFrame([self cellForSection:0 item:0].frame, 10, 20, 85, 10);
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IGAssertEqualFrame([self cellForSection:0 item:1].frame, 10, 40, 85, 20);
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IGAssertEqualFrame([self headerForSection:1].frame, 10, 75, 85, 10);
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IGAssertEqualFrame([self cellForSection:1 item:0].frame, 10, 85, 85, 30);
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}
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- (void)test_whenUsingStickyHeaders_withSimulatedScrolling_thatYPositionsAdjusted {
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[self setUpWithStickyHeaders:YES topInset:10];
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[self prepareWithData:@[
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[[IGLayoutTestSection alloc] initWithInsets:UIEdgeInsetsZero
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lineSpacing:0
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interitemSpacing:0
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headerHeight:10
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items:@[
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){100,20}],
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){100,20}],
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]],
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[[IGLayoutTestSection alloc] initWithInsets:UIEdgeInsetsZero
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lineSpacing:0
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interitemSpacing:0
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headerHeight:10
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items:@[
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){100,30}],
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){100,30}],
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){100,30}],
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]],
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]];
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// scroll header 0 halfway
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self.collectionView.contentOffset = CGPointMake(0, 5);
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[self.collectionView layoutIfNeeded];
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IGAssertEqualFrame([self headerForSection:0].frame, 0, 15, 100, 10);
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IGAssertEqualFrame([self headerForSection:1].frame, 0, 50, 100, 10);
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// scroll header 0 off and 1 up
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self.collectionView.contentOffset = CGPointMake(0, 45);
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[self.collectionView layoutIfNeeded];
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IGAssertEqualFrame([self headerForSection:0].frame, 0, 40, 100, 10);
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IGAssertEqualFrame([self headerForSection:1].frame, 0, 55, 100, 10);
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}
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- (void)test_whenAdjustingTopYInset_withVaryingHeaderHeights_thatYPositionsUpdated {
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[self setUpWithStickyHeaders:YES topInset:10];
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[self prepareWithData:@[
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[[IGLayoutTestSection alloc] initWithInsets:UIEdgeInsetsZero
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lineSpacing:0
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interitemSpacing:0
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headerHeight:10
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items:@[
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){100,10}],
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){100,20}],
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]],
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[[IGLayoutTestSection alloc] initWithInsets:UIEdgeInsetsZero
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lineSpacing:0
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interitemSpacing:0
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headerHeight:10
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items:@[
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){100,30}],
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){100,40}],
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){100,50}],
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]],
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]];
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// scroll header 0 off and 1 up
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self.collectionView.contentOffset = CGPointMake(0, 35);
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[self.collectionView layoutIfNeeded];
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IGAssertEqualFrame([self headerForSection:0].frame, 0, 30, 100, 10);
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IGAssertEqualFrame([self headerForSection:1].frame, 0, 45, 100, 10);
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self.layout.stickyHeaderOriginYAdjustment = -10;
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[self.collectionView layoutIfNeeded];
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IGAssertEqualFrame([self headerForSection:0].frame, 0, 30, 100, 10);
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IGAssertEqualFrame([self headerForSection:1].frame, 0, 40, 100, 10);
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self.layout.stickyHeaderOriginYAdjustment = 10;
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[self.collectionView layoutIfNeeded];
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IGAssertEqualFrame([self headerForSection:0].frame, 0, 30, 100, 10);
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IGAssertEqualFrame([self headerForSection:1].frame, 0, 55, 100, 10);
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}
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- (void)test_whenItemsSmallerThanContainerWidth_with0Insets_with0LineSpacing_with0Interitem_thatItemsFitSameRow {
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[self setUpWithStickyHeaders:NO topInset:0];
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[self prepareWithData:@[
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[[IGLayoutTestSection alloc] initWithInsets:UIEdgeInsetsZero
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lineSpacing:0
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interitemSpacing:0
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headerHeight:0
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items:@[
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){33,33}],
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){33,33}],
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){33,33}],
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]],
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[[IGLayoutTestSection alloc] initWithInsets:UIEdgeInsetsZero
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lineSpacing:0
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interitemSpacing:0
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headerHeight:0
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items:@[
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){33,33}],
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]],
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]];
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XCTAssertEqual(self.collectionView.contentSize.height, 66);
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IGAssertEqualFrame([self cellForSection:0 item:0].frame, 0, 0, 33, 33);
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IGAssertEqualFrame([self cellForSection:0 item:1].frame, 33, 0, 33, 33);
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IGAssertEqualFrame([self cellForSection:0 item:2].frame, 66, 0, 33, 33);
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IGAssertEqualFrame([self cellForSection:1 item:0].frame, 0, 33, 33, 33);
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}
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- (void)test_whenItemsSmallerThanContainerWidth_withHalfPointItemSpacing_with0Insets_with0LineSpacing_thatItemsFitSameRow {
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[self setUpWithStickyHeaders:NO topInset:0];
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[self prepareWithData:@[
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[[IGLayoutTestSection alloc] initWithInsets:UIEdgeInsetsZero
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lineSpacing:0
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interitemSpacing:0.5
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headerHeight:0
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items:@[
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){33,33}],
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){33,33}],
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){33,33}],
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]],
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]];
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XCTAssertEqual(self.collectionView.contentSize.height, 33);
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IGAssertEqualFrame([self cellForSection:0 item:0].frame, 0, 0, 33, 33);
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IGAssertEqualFrame([self cellForSection:0 item:1].frame, 33.5, 0, 33, 33);
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IGAssertEqualFrame([self cellForSection:0 item:2].frame, 67, 0, 33, 33);
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}
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- (void)test_whenSectionsSmallerThanContainerWidth_with0ItemSpacing_with0Insets_with0LineSpacing_thatSectionsFitSameRow {
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[self setUpWithStickyHeaders:NO topInset:0];
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[self prepareWithData:@[
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[[IGLayoutTestSection alloc] initWithInsets:UIEdgeInsetsZero
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lineSpacing:0
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interitemSpacing:0
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headerHeight:0
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items:@[
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){33,33}],
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]],
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[[IGLayoutTestSection alloc] initWithInsets:UIEdgeInsetsZero
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lineSpacing:0
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interitemSpacing:0
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headerHeight:0
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items:@[
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){33,33}],
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]],
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[[IGLayoutTestSection alloc] initWithInsets:UIEdgeInsetsZero
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lineSpacing:0
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interitemSpacing:0
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headerHeight:0
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items:@[
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){33,33}],
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]],
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]];
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XCTAssertEqual(self.collectionView.contentSize.height, 33);
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IGAssertEqualFrame([self cellForSection:0 item:0].frame, 0, 0, 33, 33);
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IGAssertEqualFrame([self cellForSection:1 item:0].frame, 33, 0, 33, 33);
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IGAssertEqualFrame([self cellForSection:2 item:0].frame, 66, 0, 33, 33);
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}
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- (void)test_whenSectionsSmallerThanContainerWidth_withHalfPointSpacing_with0Insets_with0LineSpacing_thatSectionsFitSameRow {
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[self setUpWithStickyHeaders:NO topInset:0];
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[self prepareWithData:@[
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[[IGLayoutTestSection alloc] initWithInsets:UIEdgeInsetsZero
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lineSpacing:0
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interitemSpacing:0.5
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headerHeight:0
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items:@[
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){33,33}],
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]],
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[[IGLayoutTestSection alloc] initWithInsets:UIEdgeInsetsZero
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lineSpacing:0
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interitemSpacing:0.5
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headerHeight:0
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items:@[
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){33,33}],
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]],
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[[IGLayoutTestSection alloc] initWithInsets:UIEdgeInsetsZero
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lineSpacing:0
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interitemSpacing:0.5
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headerHeight:0
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items:@[
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){33,33}],
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]],
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]];
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XCTAssertEqual(self.collectionView.contentSize.height, 33);
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IGAssertEqualFrame([self cellForSection:0 item:0].frame, 0, 0, 33, 33);
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IGAssertEqualFrame([self cellForSection:1 item:0].frame, 33.5, 0, 33, 33);
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IGAssertEqualFrame([self cellForSection:2 item:0].frame, 67, 0, 33, 33);
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}
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- (void)test_whenSectionsSmallerThanContainerWidth_with0ItemSpacing_withMiddleItemHasInsets_with0LineSpacing_thatNextSectionSnapsBelow {
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[self setUpWithStickyHeaders:NO topInset:0];
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[self prepareWithData:@[
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[[IGLayoutTestSection alloc] initWithInsets:UIEdgeInsetsZero
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lineSpacing:0
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interitemSpacing:0
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headerHeight:0
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items:@[
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){33,33}],
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]],
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[[IGLayoutTestSection alloc] initWithInsets:UIEdgeInsetsMake(10, 10, 10, 10)
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lineSpacing:0
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interitemSpacing:0
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headerHeight:0
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items:@[
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){13,50}],
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]],
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[[IGLayoutTestSection alloc] initWithInsets:UIEdgeInsetsZero
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lineSpacing:0
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interitemSpacing:0
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headerHeight:0
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items:@[
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){33,33}],
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]],
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[[IGLayoutTestSection alloc] initWithInsets:UIEdgeInsetsZero
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lineSpacing:0
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interitemSpacing:0
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headerHeight:0
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items:@[
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){33,33}],
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]],
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]];
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XCTAssertEqual(self.collectionView.contentSize.height, 103);
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IGAssertEqualFrame([self cellForSection:0 item:0].frame, 0, 0, 33, 33);
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IGAssertEqualFrame([self cellForSection:1 item:0].frame, 43, 10, 13, 50);
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IGAssertEqualFrame([self cellForSection:2 item:0].frame, 66, 0, 33, 33);
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IGAssertEqualFrame([self cellForSection:3 item:0].frame, 0, 70, 33, 33);
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}
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- (void)test_whenSectionBustingRow_thatNewlineAppliesSectionInset {
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[self setUpWithStickyHeaders:NO topInset:0];
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[self prepareWithData:@[
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[[IGLayoutTestSection alloc] initWithInsets:UIEdgeInsetsZero
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lineSpacing:0
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interitemSpacing:0
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headerHeight:0
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items:@[
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){33,33}],
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]],
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[[IGLayoutTestSection alloc] initWithInsets:UIEdgeInsetsMake(10, 10, 5, 5)
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lineSpacing:0
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interitemSpacing:0
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headerHeight:0
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items:@[
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){85,50}],
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]],
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]];
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XCTAssertEqual(self.collectionView.contentSize.height, 98);
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IGAssertEqualFrame([self cellForSection:0 item:0].frame, 0, 0, 33, 33);
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IGAssertEqualFrame([self cellForSection:1 item:0].frame, 10, 43, 85, 50);
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}
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- (void)test_whenSectionsSmallerThanWidth_withSectionHeader_thatHeaderCausesNewline {
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[self setUpWithStickyHeaders:NO topInset:0];
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[self prepareWithData:@[
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[[IGLayoutTestSection alloc] initWithInsets:UIEdgeInsetsZero
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lineSpacing:0
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interitemSpacing:0
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headerHeight:0
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items:@[
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){33,33}],
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]],
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[[IGLayoutTestSection alloc] initWithInsets:UIEdgeInsetsZero
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lineSpacing:0
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interitemSpacing:0
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headerHeight:10
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items:@[
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){33,33}],
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]],
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]];
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XCTAssertEqual(self.collectionView.contentSize.height, 76);
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IGAssertEqualFrame([self cellForSection:0 item:0].frame, 0, 0, 33, 33);
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IGAssertEqualFrame([self cellForSection:1 item:0].frame, 0, 43, 33, 33);
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}
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- (void)test_whenBatchItemUpdates_withHeaderHeight_withLineSpacing_withInsets_thatLayoutCorrectAfterUpdates {
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[self setUpWithStickyHeaders:NO topInset:0];
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const CGFloat headerHeight = 10;
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const CGFloat lineSpacing = 10;
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const UIEdgeInsets insets = UIEdgeInsetsMake(10, 10, 5, 5);
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// making the view bigger so that we can check all cell frames
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self.collectionView.frame = CGRectMake(0, 0, 100, 400);
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[self prepareWithData:@[
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[[IGLayoutTestSection alloc] initWithInsets:insets
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lineSpacing:lineSpacing
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interitemSpacing:0
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headerHeight:headerHeight
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items:@[
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){85,10}],
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){85,20}],
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]],
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[[IGLayoutTestSection alloc] initWithInsets:insets
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lineSpacing:lineSpacing
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interitemSpacing:0
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headerHeight:headerHeight
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items:@[
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){85,30}],
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]],
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[[IGLayoutTestSection alloc] initWithInsets:insets
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lineSpacing:lineSpacing
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interitemSpacing:0
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headerHeight:headerHeight
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items:@[
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){85,60}],
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]],
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[[IGLayoutTestSection alloc] initWithInsets:insets
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lineSpacing:lineSpacing
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interitemSpacing:0
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headerHeight:headerHeight
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items:@[
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[[IGLayoutTestItem alloc] initWithSize:(CGSize){85,40}],
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]],
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]];
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XCTestExpectation *expectation = [self expectationWithDescription:NSStringFromSelector(_cmd)];
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[self.collectionView performBatchUpdates:^{
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self.dataSource.sections = @[
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|
[[IGLayoutTestSection alloc] initWithInsets:insets
|
|
lineSpacing:lineSpacing
|
|
interitemSpacing:0
|
|
headerHeight:headerHeight
|
|
items:@[
|
|
[[IGLayoutTestItem alloc] initWithSize:(CGSize){85,30}], // reloaded
|
|
// deleted
|
|
]],
|
|
// moved from section 3 to 1
|
|
[[IGLayoutTestSection alloc] initWithInsets:insets
|
|
lineSpacing:lineSpacing
|
|
interitemSpacing:0
|
|
headerHeight:headerHeight
|
|
items:@[
|
|
[[IGLayoutTestItem alloc] initWithSize:(CGSize){85,40}],
|
|
]],
|
|
// deleted section 2
|
|
[[IGLayoutTestSection alloc] initWithInsets:insets
|
|
lineSpacing:lineSpacing
|
|
interitemSpacing:0
|
|
headerHeight:headerHeight
|
|
items:@[
|
|
[[IGLayoutTestItem alloc] initWithSize:(CGSize){85,30}],
|
|
[[IGLayoutTestItem alloc] initWithSize:(CGSize){85,10}], // inserted
|
|
]],
|
|
// inserted
|
|
[[IGLayoutTestSection alloc] initWithInsets:insets
|
|
lineSpacing:lineSpacing
|
|
interitemSpacing:0
|
|
headerHeight:headerHeight
|
|
items:@[
|
|
[[IGLayoutTestItem alloc] initWithSize:(CGSize){85,10}],
|
|
[[IGLayoutTestItem alloc] initWithSize:(CGSize){85,20}],
|
|
]],
|
|
];
|
|
|
|
[self.collectionView deleteSections:[NSIndexSet indexSetWithIndex:2]];
|
|
[self.collectionView insertSections:[NSIndexSet indexSetWithIndex:3]];
|
|
[self.collectionView moveSection:3 toSection:1];
|
|
[self.collectionView reloadItemsAtIndexPaths:@[quickPath(0, 0)]];
|
|
[self.collectionView deleteItemsAtIndexPaths:@[quickPath(0, 1)]];
|
|
[self.collectionView insertItemsAtIndexPaths:@[quickPath(2, 1)]];
|
|
} completion:^(BOOL finished) {
|
|
[self.collectionView layoutIfNeeded];
|
|
[expectation fulfill];
|
|
|
|
XCTAssertEqual(self.collectionView.contentSize.height, 260);
|
|
|
|
IGAssertEqualFrame([self headerForSection:0].frame, 10, 10, 85, 10);
|
|
IGAssertEqualFrame([self cellForSection:0 item:0].frame, 10, 20, 85, 30);
|
|
|
|
IGAssertEqualFrame([self headerForSection:1].frame, 10, 65, 85, 10);
|
|
IGAssertEqualFrame([self cellForSection:1 item:0].frame, 10, 75, 85, 40);
|
|
|
|
IGAssertEqualFrame([self headerForSection:2].frame, 10, 130, 85, 10);
|
|
IGAssertEqualFrame([self cellForSection:2 item:0].frame, 10, 140, 85, 30);
|
|
IGAssertEqualFrame([self cellForSection:2 item:1].frame, 10, 180, 85, 10);
|
|
|
|
IGAssertEqualFrame([self headerForSection:3].frame, 10, 205, 85, 10);
|
|
IGAssertEqualFrame([self cellForSection:3 item:0].frame, 10, 215, 85, 10);
|
|
IGAssertEqualFrame([self cellForSection:3 item:1].frame, 10, 235, 85, 20);
|
|
}];
|
|
|
|
[self waitForExpectationsWithTimeout:10 handler:^(NSError * _Nullable error) {
|
|
XCTAssertNil(error);
|
|
}];
|
|
}
|
|
|
|
- (void)test_whenQueryingLayoutAttributes_withLotsOfCells_thatExactFramesFetched {
|
|
[self setUpWithStickyHeaders:NO topInset:0];
|
|
|
|
NSMutableArray *items = [NSMutableArray new];
|
|
for (NSInteger i = 0; i < 1000; i++) {
|
|
[items addObject:[[IGLayoutTestItem alloc] initWithSize:(CGSize){100,20}]];
|
|
}
|
|
|
|
[self prepareWithData:@[
|
|
[[IGLayoutTestSection alloc] initWithInsets:UIEdgeInsetsZero
|
|
lineSpacing:0
|
|
interitemSpacing:0
|
|
headerHeight:0
|
|
items:items]
|
|
]];
|
|
|
|
XCTAssertEqual([self.layout layoutAttributesForElementsInRect:CGRectMake(0, 500, 100, 100)].count, 5);
|
|
XCTAssertEqual([self.layout layoutAttributesForElementsInRect:CGRectMake(0, 0, 100, 1000)].count, 50);
|
|
XCTAssertEqual([self.layout layoutAttributesForElementsInRect:CGRectMake(0, 250, 100, 100)].count, 6);
|
|
XCTAssertEqual([self.layout layoutAttributesForElementsInRect:CGRectMake(0, 250, 100, 1)].count, 1);
|
|
}
|
|
|
|
- (void)test_whenChangingBoundsSize_withItemsThatNewlineAfterChange_thatLayoutShiftsItems {
|
|
[self setUpWithStickyHeaders:NO topInset:0];
|
|
|
|
[self prepareWithData:@[
|
|
[[IGLayoutTestSection alloc] initWithInsets:UIEdgeInsetsZero
|
|
lineSpacing:0
|
|
interitemSpacing:0
|
|
headerHeight:0
|
|
items:@[
|
|
[[IGLayoutTestItem alloc] initWithSize:(CGSize){33,33}],
|
|
]],
|
|
[[IGLayoutTestSection alloc] initWithInsets:UIEdgeInsetsZero
|
|
lineSpacing:0
|
|
interitemSpacing:0
|
|
headerHeight:0
|
|
items:@[
|
|
[[IGLayoutTestItem alloc] initWithSize:(CGSize){33,33}],
|
|
]],
|
|
[[IGLayoutTestSection alloc] initWithInsets:UIEdgeInsetsZero
|
|
lineSpacing:0
|
|
interitemSpacing:0
|
|
headerHeight:0
|
|
items:@[
|
|
[[IGLayoutTestItem alloc] initWithSize:(CGSize){33,33}],
|
|
]],
|
|
]];
|
|
|
|
XCTAssertEqual(self.collectionView.contentSize.height, 33);
|
|
IGAssertEqualFrame([self cellForSection:0 item:0].frame, 0, 0, 33, 33);
|
|
IGAssertEqualFrame([self cellForSection:1 item:0].frame, 33, 0, 33, 33);
|
|
IGAssertEqualFrame([self cellForSection:2 item:0].frame, 66, 0, 33, 33);
|
|
|
|
// can no longer fit 3 items in one section
|
|
self.collectionView.frame = CGRectMake(0, 0, 70, 100);
|
|
[self.collectionView layoutIfNeeded];
|
|
|
|
XCTAssertEqual(self.collectionView.contentSize.height, 66);
|
|
IGAssertEqualFrame([self cellForSection:0 item:0].frame, 0, 0, 33, 33);
|
|
IGAssertEqualFrame([self cellForSection:1 item:0].frame, 33, 0, 33, 33);
|
|
IGAssertEqualFrame([self cellForSection:2 item:0].frame, 0, 33, 33, 33);
|
|
}
|
|
|
|
- (void)test_whenCollectionViewContentInset_withFullWidthItems_thatItemsPinchedIn {
|
|
[self setUpWithStickyHeaders:NO topInset:0];
|
|
self.collectionView.contentInset = UIEdgeInsetsMake(0, 30, 0, 30);
|
|
|
|
[self prepareWithData:@[
|
|
[[IGLayoutTestSection alloc] initWithInsets:UIEdgeInsetsZero
|
|
lineSpacing:0
|
|
interitemSpacing:0
|
|
headerHeight:10
|
|
items:@[
|
|
[[IGLayoutTestItem alloc] initWithSize:(CGSize){40,10}],
|
|
[[IGLayoutTestItem alloc] initWithSize:(CGSize){40,20}],
|
|
]],
|
|
]];
|
|
XCTAssertEqual(self.collectionView.contentSize.height, 40);
|
|
IGAssertEqualFrame([self headerForSection:0].frame, 30, 0, 40, 10);
|
|
IGAssertEqualFrame([self cellForSection:0 item:0].frame, 30, 10, 40, 10);
|
|
IGAssertEqualFrame([self cellForSection:0 item:1].frame, 30, 20, 40, 20);
|
|
}
|
|
|
|
@end
|