1//
  2// Licensed under the terms in License.txt
  3//
  4// Copyright 2010 Allen Ding. All rights reserved.
  5//
  6
  7#import "KWBlockRaiseMatcher.h"
  8#import "KWBlock.h"
  9
 10@interface KWBlockRaiseMatcher()
 11
 12#pragma mark -
 13#pragma mark Properties
 14
 15@property (nonatomic, readwrite, retain) NSException *exception;
 16@property (nonatomic, readwrite, retain) NSException *actualException;
 17
 18@end
 19
 20@implementation KWBlockRaiseMatcher
 21
 22#pragma mark -
 23#pragma mark Initializing
 24
 25- (void)dealloc {
 26    [exception release];
 27    [actualException release];
 28    [super dealloc];
 29}
 30
 31#pragma mark -
 32#pragma mark Properties
 33
 34@synthesize exception;
 35@synthesize actualException;
 36
 37#pragma mark -
 38#pragma mark Getting Matcher Strings
 39
 40+ (NSArray *)matcherStrings {
 41    return @[@"raise",
 42                                     @"raiseWithName:",
 43                                     @"raiseWithReason:",
 44                                     @"raiseWithName:reason:"];
 45}
 46
 47#pragma mark -
 48#pragma mark Matching
 49
 50- (BOOL)evaluate {
 51    if (![self.subject isKindOfClass:[KWBlock class]])
 52        [NSException raise:@"KWMatcherException" format:@"subject must be a KWBlock"];
 53
 54    @try {
 55        [self.subject call];
 56    } @catch (NSException *anException) {
 57        self.actualException = anException;
 58
 59        if ([self.exception name] != nil && ![[self.exception name] isEqualToString:[anException name]])
 60            return NO;
 61
 62        if ([self.exception reason] != nil && ![[self.exception reason] isEqualToString:[anException reason]])
 63            return NO;
 64
 65        return YES;
 66    }
 67
 68    return NO;
 69}
 70
 71#pragma mark -
 72#pragma mark Getting Failure Messages
 73
 74+ (NSString *)exceptionPhraseWithException:(NSException *)anException {
 75    if (anException == nil)
 76        return @"nothing";
 77
 78    NSString *namePhrase = nil;
 79
 80    if ([anException name] == nil)
 81        namePhrase = @"exception";
 82    else
 83        namePhrase = [anException name];
 84
 85    if ([anException reason] == nil)
 86        return namePhrase;
 87
 88    return [NSString stringWithFormat:@"%@ \"%@\"", namePhrase, [anException reason]];
 89}
 90
 91- (NSString *)failureMessageForShould {
 92    return [NSString stringWithFormat:@"expected %@, but %@ raised",
 93                                      [[self class] exceptionPhraseWithException:self.exception],
 94                                      [[self class] exceptionPhraseWithException:self.actualException]];
 95}
 96
 97- (NSString *)failureMessageForShouldNot {
 98    return [NSString stringWithFormat:@"expected %@ not to be raised",
 99                                      [[self class] exceptionPhraseWithException:self.actualException]];
100}
101
102#pragma mark -
103#pragma mark Configuring Matchers
104
105- (void)raise {
106    [self raiseWithName:nil reason:nil];
107}
108
109- (void)raiseWithName:(NSString *)aName {
110    [self raiseWithName:aName reason:nil];
111}
112
113- (void)raiseWithReason:(NSString *)aReason {
114    [self raiseWithName:nil reason:aReason];
115}
116
117- (void)raiseWithName:(NSString *)aName reason:(NSString *)aReason {
118    self.exception = [NSException exceptionWithName:aName reason:aReason userInfo:nil];
119}
120
121- (NSString *)description
122{
123  return [NSString stringWithFormat:@"raise %@", [[self class] exceptionPhraseWithException:self.exception]];
124}
125
126@end