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+---
+title: '#6 XCTest vs Swift Testing - Parameterized tests in the fight for more reusable code'
+date: 2024-12-05
+tags: ['Swift', 'XCTest', 'Swift Testing', 'unit testing', 'Testing']
+series: "XCTest vs. Swift Testing"
+cover: 
+  image: 'images/cover.png'
+  alt: '#6 XCTest vs Swift Testing - Parameterized tests in the fight for more reusable code'
+---
+
+### What’s the difference?
+
+XCTest doesn't provide a built-in solution for parameterized tests. To achieve this, we create test cases as structs or tuples, defining test inputs and expected results. Then, we write a loop to iterate through these test cases and execute the necessary assertions.
+
+Swift Testing simplifies this process by allowing tests to be parameterized directly. Using the `@Test` macro, you can pass test cases as an argument. What's the benefit? While you still need to define your test cases, the iteration code is no longer needed — Swift Testing handles it for you.
+
+### My thoughts
+
+I'm obviously glad to see the code simplification! As a software developer, I enjoy writing less code to achieve the same results. Looking at it with a skeptical eye — it's not a groundbreaking change that will revolutionize how we write tests. However, it's a satisfying improvement that may encourage developers to rethink how they write tests and potentially adopt this pattern where it makes sense.
+
+### Examples
+
+![Example](images/example.gif)
+
+Code ⤵️
+
+XCTest
+```swift
+static let testCases = [
+    (text: "ABC", result: false),
+    (text: "🚀", result: true),
+    (text: "ABC 👾", result: true)
+]
+
+func testTextContainsEmoji() {
+    Self.testCases.forEach { test in
+        XCTAssertEqual(test.text.containsEmoji, test.result)
+    }
+}
+```
+
+Swift Testing
+```swift
+static let testCases = [
+    (text: "ABC", result: false),
+    (text: "🚀", result: true),
+    (text: "ABC 👾", result: true)
+]
+
+@Test(arguments: testCases)
+func textContainsEmoji(testCase: (text: String, result: Bool)) {
+    #expect(testCase.text.containsEmoji == testCase.result)
+}
+```
+
+{{< footer >}}