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#import "ObjectTesting.h"
#import <Foundation/NSAutoreleasePool.h>
#import <Foundation/NSValueTransformer.h>
#import <Foundation/NSValue.h>
@interface YesTransformer : NSValueTransformer
@end
@implementation YesTransformer
+ (BOOL) allowsReverseTransformation
{
return NO;
}
+ (Class) transformedValueClass
{
return [NSNumber class];
}
- (id) transformedValue: (id)value
{
return [NSNumber numberWithBool: YES];
}
@end
@interface NestedTransformer : NSValueTransformer
{
NSValueTransformer *_backingTransformer;
}
@end
@implementation NestedTransformer
- (id) init
{
if (self = [super init]) {
_backingTransformer = RETAIN([NSValueTransformer valueTransformerForName:
NSStringFromClass([YesTransformer class])]);
}
return self;
}
- (void) dealloc
{
RELEASE(_backingTransformer);
DEALLOC
}
+ (BOOL) allowsReverseTransformation
{
return NO;
}
+ (Class) transformedValueClass
{
return [YesTransformer transformedValueClass];
}
- (id) transformedValue: (id)value
{
return [_backingTransformer transformedValue: value];
}
@end
int main()
{
NSAutoreleasePool *arp = [NSAutoreleasePool new];
NSValueTransformer *transformer;
transformer = [NSValueTransformer valueTransformerForName:NSNegateBooleanTransformerName];
PASS([[transformer transformedValue:[NSNumber numberWithBool:NO]] boolValue] == YES
&& [[transformer transformedValue:[NSNumber numberWithBool:YES]] boolValue] == NO,
"NSNegateBooleanTransformer transforms correctly");
PASS([[transformer reverseTransformedValue:[NSNumber numberWithBool:NO]] boolValue] == YES
&& [[transformer reverseTransformedValue:[NSNumber numberWithBool:YES]] boolValue] == NO,
"NSNegateBooleanTransformer reverse transforms correctly");
transformer = [NSValueTransformer valueTransformerForName:NSIsNilTransformerName];
PASS([[transformer transformedValue:nil] boolValue] == YES
&& [[transformer transformedValue:@""] boolValue] == NO,
"NSIsNilTransformer transforms correctly");
transformer = [NSValueTransformer valueTransformerForName:NSIsNotNilTransformerName];
PASS([[transformer transformedValue:@""] boolValue] == YES
&& [[transformer transformedValue:nil] boolValue] == NO,
"NSIsNotNilTransformer transforms correctly");
transformer = [NSValueTransformer valueTransformerForName:NSStringFromClass([NestedTransformer class])];
PASS([[transformer transformedValue:nil] boolValue] == YES
&& [[transformer transformedValue:@""] boolValue] == YES,
"Custom transformer transforms correctly");
[arp release]; arp = nil;
return 0;
}
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