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								//  Copyright (c) 2018 Open Whisper Systems. All rights reserved.
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								//
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								#import <SessionUtilitiesKit/AppContext.h>
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								#import <SignalCoreKit/NSObject+OWS.h>
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								#import <SignalCoreKit/OWSAsserts.h>
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								NS_ASSUME_NONNULL_BEGIN
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								#pragma mark - Singleton Asserts
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								// The "singleton asserts" can be used to ensure
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								// that we only create a singleton once.
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								//
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								// The simplest way to use them is the OWSSingletonAssert() macro.
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								// It is intended to be used inside the singleton's initializer.
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								//
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								// If, however, a singleton has multiple possible initializers,
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								// you need to:
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								//
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								// 1. Use OWSSingletonAssertFlag() outside the class definition.
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								// 2. Use OWSSingletonAssertInit() in each initializer.
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								#ifdef DEBUG
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								#define ENFORCE_SINGLETONS
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								#endif
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								#ifdef ENFORCE_SINGLETONS
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								#define OWSSingletonAssertFlag() static BOOL _isSingletonCreated = NO;
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								#define OWSSingletonAssertInit()                                                                                       \
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								    @synchronized([self class]) {                                                                                      \
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								        if (!CurrentAppContext().isRunningTests) {                                                                     \
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								            OWSAssertDebug(!_isSingletonCreated);                                                                      \
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								            _isSingletonCreated = YES;                                                                                 \
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								        }                                                                                                              \
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								    }
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								#define OWSSingletonAssert() OWSSingletonAssertFlag() OWSSingletonAssertInit()
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								#else
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								#define OWSSingletonAssertFlag()
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								#define OWSSingletonAssertInit()
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								#define OWSSingletonAssert()
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								#endif
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								#define OWSFailDebugUnlessRunningTests(_messageFormat, ...)                                                            \
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								    do {                                                                                                               \
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								        if (!CurrentAppContext().isRunningTests) {                                                                     \
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								            OWSFailDebug(_messageFormat, ##__VA_ARGS__);                                                               \
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								        }                                                                                                              \
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								    } while (0)
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								#define OWSCFailDebugUnlessRunningTests(_messageFormat, ...)                                                           \
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								    do {                                                                                                               \
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								        if (!CurrentAppContext().isRunningTests) {                                                                     \
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								            OWSCFailDebug(_messageFormat, ##__VA_ARGS__);                                                              \
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								        }                                                                                                              \
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								    } while (NO)
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								NS_ASSUME_NONNULL_END
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