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/*
weakSetUnitTests.m
Unit tests for OOWeakSet.
Written by Jens Ayton in 2012 for Oolite.
This code is hereby placed in the public domain.
*/
#import "weaksetUnitTests.h"
#import "OOWeakSet.h"
#import "OOWeakTestObject.h"
@implementation weaksetUnitTests
- (void) testAddAndCount
{
OOWeakTestObject *three = [OOWeakTestObject objectWithValue:3];
OOWeakTestObject *seven = [OOWeakTestObject objectWithValue:7];
OOWeakSet *ws = [OOWeakSet set];
STAssertNotNil(ws, @"Creating a weak set should produce a set.");
STAssertEquals(ws.count, (NSUInteger)0, @"A newly created weak set should be empty.");
[ws addObject:three];
[ws addObject:seven];
STAssertEquals(ws.count, (NSUInteger)2, @"After adding two distinct objects, weak set's count should be 2.");
[ws addObject:three];
[ws addObject:three];
STAssertEquals(ws.count, (NSUInteger)2, @"Adding duplicate objects should not increase weak set's count.");
}
- (void) testContainsObject
{
OOWeakTestObject *three = [OOWeakTestObject objectWithValue:3];
OOWeakTestObject *seven = [OOWeakTestObject objectWithValue:7];
OOWeakSet *ws = [OOWeakSet set];
[ws addObject:three];
STAssertTrue([ws containsObject:three], @"Weak set should contain object that was added.");
STAssertFalse([ws containsObject:seven], @"Weak set should not contain object that wasn't added.");
}
- (void) testRemoveObject
{
OOWeakTestObject *three = [OOWeakTestObject objectWithValue:3];
OOWeakTestObject *seven = [OOWeakTestObject objectWithValue:7];
OOWeakSet *ws = [OOWeakSet set];
[ws addObject:three];
[ws addObject:seven];
STAssertEquals(ws.count, (NSUInteger)2, @"After adding two distinct objects, weak set's count should be 2.");
STAssertTrue([ws containsObject:three], @"Weak set should contain object that was added.");
STAssertTrue([ws containsObject:seven], @"Weak set should contain object that was added.");
[ws removeObject:three];
STAssertEquals(ws.count, (NSUInteger)1, @"After adding two distinct objects and removing one, weak set's count should be 1.");
STAssertFalse([ws containsObject:three], @"Weak set should not contain object that was removed.");
STAssertTrue([ws containsObject:seven], @"Weak set should contain object that was not removed.");
}
- (void) testEquality
{
OOWeakTestObject *three = [OOWeakTestObject objectWithValue:3];
OOWeakTestObject *seven = [OOWeakTestObject objectWithValue:7];
OOWeakSet *ws1 = [OOWeakSet set];
OOWeakSet *ws2 = [OOWeakSet set];
STAssertTrue([ws1 isEqual:ws2], @"Two empty weak sets should be equal.");
[ws1 addObject:three];
[ws2 addObject:seven];
STAssertFalse([ws1 isEqual:ws2], @"Two weak sets containing different objects should not be equal.");
[ws2 addObject:three];
[ws1 addObject:seven];
STAssertTrue([ws1 isEqual:ws2], @"Two weak sets containing the same objects should be equal.");
}
- (void) testWeakness
{
OOWeakTestObject *three = [OOWeakTestObject objectWithValue:3];
OOWeakSet *ws = [OOWeakSet set];
@autoreleasepool
{
OOWeakTestObject *seven = [OOWeakTestObject objectWithValue:7];
[ws addObject:three];
[ws addObject:seven];
STAssertEquals(ws.count, (NSUInteger)2, @"After adding two distinct objects, weak set's count should be 2.");
}
STAssertEquals(ws.count, (NSUInteger)1, @"After one object's lifetime expired, weak set's count should be 1.");
STAssertTrue([ws containsObject:three], @"Weak set should contain object which has not expired.");
}
- (void) testPerformSelector
{
OOWeakTestObject *three = [OOWeakTestObject objectWithValue:3];
OOWeakTestObject *seven = [OOWeakTestObject objectWithValue:7];
OOWeakTestObject *nine = [OOWeakTestObject objectWithValue:9];
OOWeakSet *ws = [OOWeakSet set];
[ws addObject:three];
[ws addObject:seven];
NSMutableSet *set = [NSMutableSet set];
[ws makeObjectsPerformSelector:@selector(addSelfToSet:) withObject:set];
STAssertEquals(set.count, ws.count, @"After after having objects from weak set add themselves to a strong set, the two sets' counts should match.");
STAssertTrue([set containsObject:three], @"Strong set should contain object copied from weak set.");
STAssertTrue([set containsObject:seven], @"Strong set should contain object copied from weak set.");
[ws addObject:nine];
STAssertFalse([set containsObject:nine], @"Strong set should not contain object not copied from weak set.");
}
@end
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