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How to assert the value of an optional Bool in Swift unit test?


How to assert the value of an optional Bool in Swift unit test?

By : Andrea Leardini
Date : November 20 2020, 03:01 PM
To fix the issue you can do I have a Swift unit test similar to the following: , The cleanest approach I found is:
code :
XCTAssertEqual(firstArgumentInClosure, true)
XCTAssertEqual(firstArgumentInClosure, false)


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Swift unit test - unexpectedly found nil while unwrapping an Optional value

Swift unit test - unexpectedly found nil while unwrapping an Optional value


By : user3785029
Date : March 29 2020, 07:55 AM
Does that help Guessing here.
You say that songTitleTextField.placeholder = "Enter your song title here..." is in your viewDidLoad method, which is called from your tests.
Test.QuickCheck.Monadic: why is assert applied to Bool, not Testable a => a

Test.QuickCheck.Monadic: why is assert applied to Bool, not Testable a => a


By : Nitzan
Date : March 29 2020, 07:55 AM
To fix the issue you can do I think it was due to technical constraints, because currently to evaluate a Testable with the Test.QuickCheck library, you need to use one of the quickCheck* functions, which are very IO-centric. That happens because QuickCheck tests Testable properties by randomly generating possible inputs (by default 100), trying to find a counterexample which proves the property false. If such input is not found, the property is assumed to be true (although that is not necessarily the truth; there may be a counterexample that was not tested). And to be able to generate random inputs in Haskell, we are stuck to the IO monad.
Notice that even though assert was defined in such a generic way, it is used through all the paper only with Bool. So the library author (the same of the paper) preferred to sacrifice the generic Testable parameter for a simple Bool, to not force any monad at this point.
code :
-- assert :: Testable prop => prop -> PropertyM m ()
stop :: (Testable prop, Monad m) => prop -> PropertyM m a
import Control.Monad
import Control.Monad.Trans
import Test.QuickCheck
import Test.QuickCheck.Monadic
import Test.QuickCheck.Property
import Test.QuickCheck.Test

assertIO :: Testable prop => prop -> PropertyM IO ()
assertIO p = do r <- liftIO $ quickCheckWithResult stdArgs{chatty = False} p
                unless (isSuccess r) $ fail "Assertion failed"
prop_assert :: Property
prop_assert = monadicIO $ do assertIO succeeded
                             assertIO failed

prop_stop :: Property
prop_stop = monadicIO $ do stop succeeded
                           stop failed

main :: IO ()
main = do putStrLn "prop_assert:"
          quickCheck prop_assert
          putStrLn "prop_stop:"
          quickCheck prop_stop
Swift Unit test- How do I assert that a CGColor is what it's supposed to be?

Swift Unit test- How do I assert that a CGColor is what it's supposed to be?


By : Евгений Добрынин
Date : March 29 2020, 07:55 AM
To fix this issue Using Xcode V7.2. Trying to unit test, need to verify that the correct color has been set, and get this message: , Use XCTAssert and test whether CGColorEqualToColor is true.
Swift: Reduce optional array of models to single Bool by optional property

Swift: Reduce optional array of models to single Bool by optional property


By : Miguel
Date : March 29 2020, 07:55 AM
wish of those help You can do this all in a single expression with optional chaining, Array.contains(where:) and nil coalescence.
code :
func hasATrue(aModel: ModelA) {
    return aModel.bModels?.contains(where: { $0.aBool == true }) ?? false
}
Camel unit test - how can we write a unit test to assert that a particular method of a bean is invoked?

Camel unit test - how can we write a unit test to assert that a particular method of a bean is invoked?


By : dbywalec
Date : March 29 2020, 07:55 AM
wish of those help When using a mocking framework like mockito you could mock the ProductService in your spring test context:
code :
@Bean
public ProductService mockedProductService() {
    return Mockito.mock(ProductService.class);
}
verify(mockedProductService, times(1)).getAllProducts();
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