像 Haskell QuickCheck 一样，是 Objective-C。
QuickCheck 是一个随机测试库。它生成随机值，并使用这些值运行多个测试用例。让我们开始数据驱动测试。
CocoaPods](https://github.com/CocoaPods/)
dependency 'NLTQuickCheck'describe(@"QuickCheck", ^{
it(@"BDD style example", ^{
NLTQTestable *testable = [NLTQTestable testableWithPropertyBlockArguments2:^BOOL(id argA, id argB) {
return [Math add:[argA intValue] b:[argB intValue]] == [argA intValue] + [argB intValue];
} arbitraries:[NSNumber intArbitrary], [NSNumber intArbitrary], nil];
[testable check];
[[theValue([testable success]) should] beYes];
NSLog(@"%@", [testable prettyReport]);
});
});
// Tests: 100
// ✓ Successes : 100
// ✗ Failures : 0
// ✷ Exceptions : 0- (BOOL)propAdd:(NSNumber*)a b:(NSNumber*)b {
return [Math add:[a intValue] b:[b intValue]] == [a intValue] + [b intValue];
}
- (void)testQuickCheckXUnitStyleExample {
NLTQTestable *testable = [NLTQTestable testableWithPropertySelector:@selector(propAdd:b:)
target:self
arbitraries:[NSNumber intArbitrary], [NSNumber intArbitrary], nil];
[testable check];
STAssertTrue([testable success], @"%@", [testable prettyReport]);
}
// Tests: 100
// ✓ Successes : 100
// ✗ Failures : 0
// ✷ Exceptions : 0it(@"failure case", ^{
NLTQTestable *testable = [NLTQTestable testableWithPropertyBlockArguments2:^BOOL(id argA, id argB) {
return [argA intValue] - [argB intValue] > 0;
} arbitraries:[NSNumber intArbitrary], [NSNumber intArbitrary], nil];
[testable verboseCheck];
[[theValue([testable success]) should] beYes];
NSLog(@"%@", [testable prettyReport]);
});
//Tests: 100
// ✓ Successes : 29
// ✗ Failures : 71
// ✗ Failure : ( 0 , 0 )
// ✗ Failure : ( 0 , 0 )
// ✗ Failure : ( 0 , 0 )
// ✗ Failure : ( -38 , 51 )
// ✗ Failure : ( -38 , 51 )
// ✗ Failure : ( -38 , 51 )
// ✗ Failure : ( -102 , 94 )
// ✗ Failure : ( -102 , 94 )
// ✗ Failure : ( -102 , 94 )
// ✗ Failure : ( 206 , 502 )
// ....
// ✗ Failure : ( -8537 , 26611 )
// ✷ Exceptions: 0[NSString arbitary][NSString alphabetStringArbitrary][NSNumber intArbitrary][NSNumber nonZeroIntArbitrary][NSNumber doubleArbitrary][NSNumber boolArbitrary]