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//
// GTMNSEnumerator+FilterTest.m
//
// Copyright 2007-2008 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy
// of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
//
#import "GTMSenTestCase.h"
#import "GTMNSEnumerator+Filter.h"
@interface GTMNSEnumerator_FilterTest : GTMTestCase
@end
@implementation GTMNSEnumerator_FilterTest
- (void)testEnumeratorByMakingEachObjectPerformSelector {
// test w/ a set of strings
NSSet *numbers = [NSSet setWithObjects: @"1", @"2", @"3", nil];
NSEnumerator *e = [[numbers objectEnumerator]
gtm_enumeratorByMakingEachObjectPerformSelector:@selector(stringByAppendingString:)
withObject:@" "];
NSMutableSet *trailingSpaces = [NSMutableSet set];
id obj;
while (nil != (obj = [e nextObject])) {
[trailingSpaces addObject:obj];
}
NSSet *trailingSpacesGood = [NSSet setWithObjects: @"1 ", @"2 ", @"3 ", nil];
STAssertEqualObjects(trailingSpaces, trailingSpacesGood, @"");
// test an empty set
NSSet *empty = [NSSet set];
e = [[empty objectEnumerator]
gtm_enumeratorByMakingEachObjectPerformSelector:@selector(stringByAppendingString:)
withObject:@" "];
STAssertNil([e nextObject],
@"shouldn't have gotten anything from first advance of enumerator");
}
- (void)testFilteredEnumeratorByMakingEachObjectPerformSelector {
// test with a dict of strings
NSDictionary *testDict = [NSDictionary dictionaryWithObjectsAndKeys:
@"foo", @"1",
@"bar", @"2",
@"foobar", @"3",
nil];
// test those that have prefixes
NSEnumerator *e = [[testDict objectEnumerator]
gtm_filteredEnumeratorByMakingEachObjectPerformSelector:@selector(hasPrefix:)
withObject:@"foo"];
// since the dictionary iterates in any order, compare as sets
NSSet *filteredValues = [NSSet setWithArray:[e allObjects]];
NSSet *expectedValues = [NSSet setWithObjects:@"foo", @"foobar", nil];
STAssertEqualObjects(filteredValues, expectedValues, @"");
// test an empty set
NSSet *empty = [NSSet set];
e = [[empty objectEnumerator]
gtm_filteredEnumeratorByMakingEachObjectPerformSelector:@selector(hasPrefix:)
withObject:@"foo"];
STAssertNil([e nextObject],
@"shouldn't have gotten anything from first advance of enumerator");
// test an set that will filter out
NSSet *filterAway = [NSSet setWithObjects:@"bar", @"baz", nil];
e = [[filterAway objectEnumerator]
gtm_filteredEnumeratorByMakingEachObjectPerformSelector:@selector(hasPrefix:)
withObject:@"foo"];
STAssertNil([e nextObject],
@"shouldn't have gotten anything from first advance of enumerator");
}
- (void)testEnumeratorByTargetPerformOnEachSelector {
// test w/ a set of strings
NSSet *numbers = [NSSet setWithObjects: @"1", @"2", @"3", nil];
NSString *target = @"foo";
NSEnumerator *e = [[numbers objectEnumerator]
gtm_enumeratorByTarget:target
performOnEachSelector:@selector(stringByAppendingString:)];
// since the set iterates in any order, compare as sets
NSSet *collectedValues = [NSSet setWithArray:[e allObjects]];
NSSet *expectedValues = [NSSet setWithObjects:@"foo1", @"foo2", @"foo3", nil];
STAssertEqualObjects(collectedValues, expectedValues, @"");
// test an empty set
NSSet *empty = [NSSet set];
e = [[empty objectEnumerator]
gtm_enumeratorByTarget:target
performOnEachSelector:@selector(stringByAppendingString:)];
STAssertNil([e nextObject],
@"shouldn't have gotten anything from first advance of enumerator");
}
- (void)testFilteredEnumeratorByTargetPerformOnEachSelector {
// test w/ a set of strings
NSSet *numbers = [NSSet setWithObjects:@"1", @"2", @"3", @"4", nil];
NSSet *target = [NSSet setWithObjects:@"2", @"4", @"6", nil];
NSEnumerator *e = [[numbers objectEnumerator]
gtm_filteredEnumeratorByTarget:target
performOnEachSelector:@selector(containsObject:)];
// since the set iterates in any order, compare as sets
NSSet *filteredValues = [NSSet setWithArray:[e allObjects]];
NSSet *expectedValues = [NSSet setWithObjects:@"2", @"4", nil];
STAssertEqualObjects(filteredValues, expectedValues, @"");
// test an empty set
NSSet *empty = [NSSet set];
e = [[empty objectEnumerator]
gtm_filteredEnumeratorByTarget:target
performOnEachSelector:@selector(containsObject:)];
STAssertNil([e nextObject],
@"shouldn't have gotten anything from first advance of enumerator");
// test an set that will filter out
NSSet *filterAway = [NSSet setWithObjects:@"bar", @"baz", nil];
e = [[filterAway objectEnumerator]
gtm_filteredEnumeratorByTarget:target
performOnEachSelector:@selector(containsObject:)];
STAssertNil([e nextObject],
@"shouldn't have gotten anything from first advance of enumerator");
}
@end
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