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Allow YLTableViewCell conforming classes to be unregistered #29

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Allow YLTableViewCell conforming classes to be unregistered #29

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3 changes: 2 additions & 1 deletion Classes/YLTableView.m
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Original file line number Diff line number Diff line change
Expand Up @@ -45,11 +45,12 @@ - (instancetype)initWithFrame:(CGRect)frame style:(UITableViewStyle)style {

- (void)registerClass:(Class)cellClass forCellReuseIdentifier:(NSString *)identifier {
NSAssert(identifier, @"Must have a reuse identifier.");
NSAssert([cellClass conformsToProtocol:@protocol(YLTableViewCell)], @"You can only use cells conforming to YLTableViewCell.");

[super registerClass:cellClass forCellReuseIdentifier:identifier];

if (cellClass) {
NSAssert([cellClass conformsToProtocol:@protocol(YLTableViewCell)], @"You can only use cells conforming to YLTableViewCell.");

self.cellClassForReuseIdentifier[identifier] = cellClass;
} else {
[self.cellClassForReuseIdentifier removeObjectForKey:identifier];
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10 changes: 10 additions & 0 deletions YLTableViewTests/YLTableViewDataSourceTests.m
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Expand Up @@ -76,6 +76,16 @@ - (void)testNonConformingCell {
XCTAssertThrows([self.tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:@"UITableViewCell"]);
}

- (void)testUnregistereredTableCell {
NSString *const kUnregisteredReuseIdentifier = @"UnregisteredClass-ReuseId";

[self.tableView registerClass:[YLTableViewCellTestStub class] forCellReuseIdentifier:kUnregisteredReuseIdentifier];
XCTAssertNotNil([self.tableView dequeueReusableCellWithIdentifier:kUnregisteredReuseIdentifier]);

[self.tableView registerClass:nil forCellReuseIdentifier:kUnregisteredReuseIdentifier];
XCTAssertNil([self.tableView dequeueReusableCellWithIdentifier:kUnregisteredReuseIdentifier]);
}

- (void)testEstimatedRowHeightOverride {
self.dataSource.shouldOverrideEstimatedRowHeight = YES;
CGFloat height = [self.dataSource tableView:self.tableView estimatedHeightForRowAtIndexPath:[self _indexPathForCustomReuseIdentifier]];
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