mirror of
https://github.com/Instagram/IGListKit
synced 2026-05-14 21:08:48 +00:00
5eca718ea7
Summary: Issue fixed: #430 - [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 added an entry to the `CHANGELOG.md` for any breaking changes, enhancements, or bug fixes. Closes https://github.com/Instagram/IGListKit/pull/577 Differential Revision: D4768612 Pulled By: rnystrom fbshipit-source-id: 6a2024101411302446cc2b7843fa175cd43a1562
136 lines
8.3 KiB
Objective-C
136 lines
8.3 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 "IGListBatchUpdateData.h"
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#import "IGListMoveIndexPathInternal.h"
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// IGListMoveIndexInternal.h
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@interface IGListMoveIndex (Private)
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- (instancetype)initWithFrom:(NSInteger)from to:(NSInteger)to;
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@end
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@interface IGListBatchUpdateDataTests : XCTestCase
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@end
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@implementation IGListBatchUpdateDataTests
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static NSIndexSet *indexSet(NSArray<NSNumber *> *arr) {
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NSMutableIndexSet *set = [NSMutableIndexSet new];
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for (NSNumber *n in arr) {
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[set addIndex:[n integerValue]];
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}
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return set;
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}
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static NSIndexPath *newPath(NSInteger section, NSInteger item) {
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return [NSIndexPath indexPathForItem:item inSection:section];
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}
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static IGListMoveIndexPath *newMovePath(NSInteger fromSection, NSInteger fromItem, NSInteger toSection, NSInteger toItem) {
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return [[IGListMoveIndexPath alloc] initWithFrom:newPath(fromSection, fromItem) to:newPath(toSection, toItem)];
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}
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static IGListMoveIndex *newMove(NSInteger from, NSInteger to) {
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return [[IGListMoveIndex alloc] initWithFrom:from to:to];
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}
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- (void)test_whenEmptyUpdates_thatResultExists {
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IGListBatchUpdateData *result = [[IGListBatchUpdateData alloc] initWithInsertSections:indexSet(@[])
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deleteSections:indexSet(@[])
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moveSections:[NSSet new]
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insertIndexPaths:[NSSet new]
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deleteIndexPaths:[NSSet new]
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moveIndexPaths:[NSSet new]];
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XCTAssertNotNil(result);
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}
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- (void)test_whenUpdatesAreClean_thatResultMatches {
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IGListBatchUpdateData *result = [[IGListBatchUpdateData alloc] initWithInsertSections:indexSet(@[@0, @1])
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deleteSections:indexSet(@[@5])
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moveSections:[NSSet setWithArray:@[newMove(3, 4)]]
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insertIndexPaths:[NSSet setWithArray:@[newPath(0, 0)]]
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deleteIndexPaths:[NSSet setWithArray:@[newPath(1, 0)]]
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moveIndexPaths:[NSSet setWithArray:@[newMovePath(6, 0, 6, 1)]]];
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XCTAssertEqualObjects(result.insertSections, indexSet(@[@0, @1]));
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XCTAssertEqualObjects(result.deleteSections, indexSet(@[@5]));
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XCTAssertEqualObjects(result.moveSections, [NSSet setWithArray:@[newMove(3, 4)]]);
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XCTAssertEqualObjects(result.insertIndexPaths, [NSSet setWithArray:@[newPath(0, 0)]]);
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XCTAssertEqualObjects(result.deleteIndexPaths, [NSSet setWithArray:@[newPath(1, 0)]]);
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XCTAssertEqual(result.moveIndexPaths.count, 1);
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XCTAssertEqualObjects(result.moveIndexPaths.anyObject, [[IGListMoveIndexPath alloc] initWithFrom:newPath(6, 0) to:newPath(6, 1)]);
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}
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- (void)test_whenMovingSections_withItemDeletes_thatResultConvertsConflicts_toDeletesAndInserts {
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IGListBatchUpdateData *result = [[IGListBatchUpdateData alloc] initWithInsertSections:indexSet(@[])
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deleteSections:indexSet(@[])
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moveSections:[NSSet setWithArray:@[newMove(2, 4)]]
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insertIndexPaths:[NSSet new]
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deleteIndexPaths:[NSSet setWithArray:@[newPath(2, 0), newPath(3, 4)]]
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moveIndexPaths:[NSSet new]];
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XCTAssertEqualObjects(result.insertSections, indexSet(@[@4]));
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XCTAssertEqualObjects(result.deleteSections, indexSet(@[@2]));
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XCTAssertEqualObjects(result.deleteIndexPaths, [NSSet setWithArray:@[newPath(3, 4)]]);
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XCTAssertEqual(result.moveSections.count, 0);
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}
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- (void)test_whenMovingSections_withItemInserts_thatResultConvertsConflicts_toDeletesAndInserts {
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IGListBatchUpdateData *result = [[IGListBatchUpdateData alloc] initWithInsertSections:indexSet(@[])
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deleteSections:indexSet(@[])
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moveSections:[NSSet setWithArray:@[newMove(2, 4)]]
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insertIndexPaths:[NSSet setWithArray:@[newPath(4, 0), newPath(3, 4)]]
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deleteIndexPaths:[NSSet new]
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moveIndexPaths:[NSSet new]];
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XCTAssertEqualObjects(result.insertSections, indexSet(@[@4]));
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XCTAssertEqualObjects(result.deleteSections, indexSet(@[@2]));
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XCTAssertEqualObjects(result.insertIndexPaths, [NSSet setWithArray:@[newPath(3, 4)]]);
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XCTAssertEqual(result.moveSections.count, 0);
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}
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- (void)test_whenMovingIndexPaths_withSectionDeleted_thatResultDropsTheMove {
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IGListBatchUpdateData *result = [[IGListBatchUpdateData alloc] initWithInsertSections:indexSet(@[])
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deleteSections:indexSet(@[@0])
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moveSections:[NSSet new]
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insertIndexPaths:[NSSet new]
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deleteIndexPaths:[NSSet new]
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moveIndexPaths:[NSSet setWithArray:@[newMovePath(0, 0, 0, 1)]]];
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XCTAssertEqual(result.moveIndexPaths.count, 0);
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XCTAssertEqualObjects(result.deleteSections, indexSet(@[@0]));
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}
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- (void)test_whenMovingIndexPaths_withSectionMoved_thatResultConvertsToDeletesAndInserts {
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IGListBatchUpdateData *result = [[IGListBatchUpdateData alloc] initWithInsertSections:indexSet(@[])
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deleteSections:indexSet(@[])
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moveSections:[NSSet setWithArray:@[newMove(0, 1)]]
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insertIndexPaths:[NSSet new]
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deleteIndexPaths:[NSSet new]
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moveIndexPaths:[NSSet setWithArray:@[newMovePath(0, 0, 0, 1)]]];
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XCTAssertEqual(result.moveIndexPaths.count, 0);
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XCTAssertEqual(result.moveSections.count, 0);
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XCTAssertEqualObjects(result.deleteSections, indexSet(@[@0]));
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XCTAssertEqualObjects(result.insertSections, indexSet(@[@1]));
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}
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- (void)test_whenMovingSections_withMoveFromConflictWithDelete_thatResultDropsTheMove {
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IGListBatchUpdateData *result = [[IGListBatchUpdateData alloc] initWithInsertSections:indexSet(@[])
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deleteSections:indexSet(@[@2])
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moveSections:[NSSet setWithArray:@[newMove(2, 6), newMove(0, 2)]]
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insertIndexPaths:[NSSet new]
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deleteIndexPaths:[NSSet new]
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moveIndexPaths:[NSSet new]];
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XCTAssertEqual(result.deleteSections.count, 1);
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XCTAssertEqual(result.moveSections.count, 1);
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XCTAssertEqual(result.insertSections.count, 0);
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XCTAssertEqualObjects(result.deleteSections, indexSet(@[@2]));
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XCTAssertEqualObjects(result.moveSections.anyObject, newMove(0, 2));
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}
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@end
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