update template tests

Tools/Scripts/Templates/SimpleScreenExample/Tests/Unit/TemplateScreenViewModelTests.swift

@@ -6,46 +6,47 @@
 //
 
 @testable import ElementX
-import XCTest
+import Testing
 
+@Suite
 @MainActor
-class TemplateScreenViewModelTests: XCTestCase {
-    var viewModel: TemplateScreenViewModelProtocol!
+struct TemplateScreenViewModelTests {
+    var viewModel: TemplateScreenViewModelProtocol
     
     var context: TemplateScreenViewModelType.Context {
         viewModel.context
     }
     
-    override func setUpWithError() throws {
+    init() {
         viewModel = TemplateScreenViewModel()
     }
     
     func testInitialState() {
-        XCTAssertFalse(context.composerText.isEmpty)
-        XCTAssertEqual(context.viewState.counter, 0)
+        #expect(!context.composerText.isEmpty)
+        #expect(context.viewState.counter == 0)
     }
     
     func testTextField() {
         context.composerText = "123"
         context.send(viewAction: .textChanged)
-        XCTAssertEqual(context.composerText, "123")
+        #expect(context.composerText == "123")
     }
     
     func testCounter() async throws {
         var deferred = deferFulfillment(context.observe(\.viewState.counter)) { $0 == 1 }
         context.send(viewAction: .incrementCounter)
         try await deferred.fulfill()
-        XCTAssertEqual(context.viewState.counter, 1)
+        #expect(context.viewState.counter == 1)
         
         deferred = deferFulfillment(context.observe(\.viewState.counter)) { $0 == 3 }
         context.send(viewAction: .incrementCounter)
         context.send(viewAction: .incrementCounter)
         try await deferred.fulfill()
-        XCTAssertEqual(context.viewState.counter, 3)
+        #expect(context.viewState.counter == 3)
         
         deferred = deferFulfillment(context.observe(\.viewState.counter)) { $0 == 2 }
         context.send(viewAction: .decrementCounter)
         try await deferred.fulfill()
-        XCTAssertEqual(context.viewState.counter, 2)
+        #expect(context.viewState.counter == 2)
     }
 }