XCTest framework basics in Swift - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the XCTest framework.

Swift

import [1]

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AXCTest

BFoundation

CUIKit

DSwiftUI

Attempts:

3 left

💡 Hint

Common Mistakes

Importing Foundation instead of XCTest.

Forgetting to import any framework.

The XCTest framework is imported using import XCTest to write test cases.

2fill in blank

medium

Complete the code to define a test case class named MyTests.

Swift

class MyTests: [1] { }

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AXCTestCase

BNSObject

CUIViewController

DTestSuite

Attempts:

3 left

💡 Hint

Common Mistakes

Inheriting from NSObject or UIViewController instead of XCTestCase.

Not inheriting from any class.

Test case classes must inherit from XCTestCase to use XCTest features.

3fill in blank

hard

Fix the error in the test method declaration to make it a valid XCTest test method.

Swift

func [1]() { XCTAssertTrue(true) }

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AexampleTest

BtestExample

CTestExample

Dexample

Attempts:

3 left

💡 Hint

Common Mistakes

Using method names that do not start with 'test'.

Capitalizing the first letter of the method name.

Test methods must start with the word test and be lowercase to be recognized by XCTest.

4fill in blank

hard

Fill both blanks to create a test method that checks if 2 + 2 equals 4.

Swift

func [1]() {
    XCTAssertEqual([2], 4)
}

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AtestAddition

B2 + 2

C3 + 1

Dsum

Attempts:

3 left

💡 Hint

Common Mistakes

Using a method name that does not start with 'test'.

Using incorrect expressions inside XCTAssertEqual.

The test method name should start with 'test'. The expression 2 + 2 is checked to equal 4.

5fill in blank

hard

Fill all three blanks to write a test method that fails if a string is empty.

Swift

func [1]() {
    let text = "Hello"
    XCTAssertFalse([2].[3])
}

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AtestStringIsNotEmpty

Btext

CisEmpty

Dstring

Attempts:

3 left

💡 Hint

Common Mistakes

Using a method name that does not start with 'test'.

Using wrong variable names or properties.

The test method name starts with 'test'. The variable text is checked using its isEmpty property inside XCTAssertFalse.