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Fix retain cycle with transaction operations #1429
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Adlai-Holler
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TextureGroup:master
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bolsinga:bolsinga-FixTransactionLeakWithTests
Mar 29, 2019
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| // | ||
| // ASTransactionTests.m | ||
| // AsyncDisplayKitTests | ||
| // | ||
| // Created by Greg Bolsinga on 3/26/19. | ||
| // Copyright © 2019 Pinterest. All rights reserved. | ||
| // | ||
|
|
||
| #import "ASTestCase.h" | ||
| #import <AsyncDisplayKit/AsyncDisplayKit.h> | ||
|
|
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| @interface ASTransactionTests : ASTestCase | ||
|
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| @end | ||
|
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| @implementation ASTransactionTests | ||
|
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| - (void)testWeak | ||
| { | ||
| __weak _ASAsyncTransaction* weakTransaction = nil; | ||
| @autoreleasepool { | ||
| CALayer *layer = [[CALayer alloc] init]; | ||
| _ASAsyncTransaction *transaction = layer.asyncdisplaykit_asyncTransaction; | ||
|
|
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| weakTransaction = transaction; | ||
| layer = nil; | ||
| } | ||
|
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| // held by main transaction group | ||
| XCTAssertNotNil(weakTransaction); | ||
|
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| // run so that transaction group drains. | ||
| static NSTimeInterval delay = 0.1; | ||
| [[NSRunLoop currentRunLoop] runUntilDate:[NSDate dateWithTimeIntervalSinceNow:delay]]; | ||
|
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| XCTAssertNil(weakTransaction); | ||
| } | ||
|
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| - (void)testWeakWhenCancelled | ||
| { | ||
| __weak _ASAsyncTransaction* weakTransaction = nil; | ||
| @autoreleasepool { | ||
| CALayer *layer = [[CALayer alloc] init]; | ||
| _ASAsyncTransaction *transaction = layer.asyncdisplaykit_asyncTransaction; | ||
|
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| weakTransaction = transaction; | ||
|
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| [layer asyncdisplaykit_cancelAsyncTransactions]; | ||
| layer = nil; | ||
| } | ||
|
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| XCTAssertNil(weakTransaction); | ||
| } | ||
|
|
||
| - (void)testWeakWithSingleOperation | ||
| { | ||
| __weak _ASAsyncTransaction* weakTransaction = nil; | ||
| @autoreleasepool { | ||
| CALayer *layer = [[CALayer alloc] init]; | ||
| _ASAsyncTransaction *transaction = layer.asyncdisplaykit_asyncTransaction; | ||
|
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| [transaction addOperationWithBlock:^id<NSObject> _Nullable{ | ||
| return nil; | ||
| } priority:1 | ||
| queue:dispatch_get_main_queue() | ||
| completion:^(id _Nullable value, BOOL canceled) { | ||
| ; | ||
| }]; | ||
|
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| weakTransaction = transaction; | ||
| layer = nil; | ||
| } | ||
|
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| // held by main transaction group | ||
| XCTAssertNotNil(weakTransaction); | ||
|
|
||
| // run so that transaction group drains. | ||
| static NSTimeInterval delay = 0.1; | ||
| [[NSRunLoop currentRunLoop] runUntilDate:[NSDate dateWithTimeIntervalSinceNow:delay]]; | ||
|
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| XCTAssertNil(weakTransaction); | ||
| } | ||
|
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| @end | ||
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can this just be a nil block?