update for swift testing

articles/iOSTesting.md

@@ -55,3 +55,5 @@ UI tests let us test our app like the end user. It can mimic the user behaviors,
 
 ## xcodebuild test-without-building
 A more common scenario is to use `xcodebuild test-without-build` to run `.xctest`. [Here](../testing/xcodebuild/run_test.py) is a script to show how this works.
+
+## Swift Testing

xctest/README.md

@@ -1,5 +1,8 @@
 # XCTest
 
+> [!WARNING]
+> This note is deprecated. See [Behind the scenes: iOS Testing](./articles/iOSTesting.md)
+
 The word "xctest" is extensively used in the realm of iOS testing, the test bundle (`.xctest`), the test framework (`XCTest.framework`), and the test runner (`xctest`). This article along with a sample will dive into some details about iOS testing.
 
 ## Build and Run

xctest/build_and_test.sh

@@ -1,9 +1,8 @@
 #!/bin/zsh
-# This script was tested on Xcode 14.0
+# This script was tested on Xcode 16.0
 set -e
 
-# Change the target to arm64 to run tests natively on M1 machine
-TARGET="x86_64-apple-ios14.0-simulator"
+TARGET="arm64-apple-ios16.0-simulator"
 
 SDKROOT=$(xcrun --show-sdk-path --sdk iphonesimulator)
 PLATFORM_DIR="$(xcode-select -p)/Platforms/iPhoneSimulator.platform"
@@ -26,12 +25,12 @@ xcrun ld -bundle -o build/Test.xctest/Test build/Test.o \
     -L "$PLATFORM_DIR/Developer/usr/lib" \
     -F "$PLATFORM_DIR/Developer/Library/Frameworks" \
     -F "$SDKROOT/System/Library/Frameworks" \
-    -lSystem
+    -lXCTestSwiftSupport
 
 # To set environment variables in the simulator, use SIMCTL_CHILD_ prefix
 # export SIMCTL_CHILD_DYLD_PRINT_ENV=1
 # export SIMCTL_CHILD_DYLD_PRINT_LIBRARIES=1
 
-xcrun simctl spawn --arch=$ARCH --standalone "iPhone 8"  \
+xcrun simctl spawn --arch=$ARCH --standalone "iPhone 16"  \
     "$PLATFORM_DIR/Developer/Library/Xcode/Agents/xctest" \
     $(realpath build/Test.xctest)

xctest/test.swift

@@ -1,8 +1,28 @@
 
 import XCTest
+import Testing
 
-class Tests: XCTestCase {
-  func testExample() throws {
-    XCTAssert(true)
+class XCTestDemo: XCTestCase {
+
+    func testMathOperations() {
+        let a = 5
+        let b = 3
+
+        XCTAssertEqual(a + b, 8)
+        XCTAssertEqual(a * b, 15)
+        XCTAssertEqual(a - b, 2)
+    }
+}
+
+struct SwiftTestingDemo {
+
+  @Test func verifyMathOperations() {
+      let a = 5
+      let b = 3
+
+      #expect(a + b == 8)
+      #expect(a * b == 15)
+      #expect(a - b == 2)
   }
+
 }