test(examples): Add app launch smoke test and PR workflow

.github/workflows/example-ui-tests.yml

@@ -0,0 +1,52 @@
+name: Example UI Tests
+
+on:
+  pull_request:
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  smoke-test:
+    name: Example launch (iOS)
+    runs-on: macos-latest
+    timeout-minutes: 30
+    steps:
+      - name: Checkout the repository
+        uses: actions/checkout@v7
+
+      - uses: maxim-lobanov/setup-xcode@v1
+        with:
+          xcode-version: latest-stable
+
+      - name: Install build tools
+        run: brew install xcodegen xcbeautify
+
+      - name: Prepare iOS Simulator
+        id: simulator
+        uses: kula-app/wait-for-services-action/ios-simulator@v1
+        with:
+          platform: iOS
+          device: iPhone 17 Pro
+          boot: true
+          timeout: 300
+
+      - name: Run example smoke test
+        env:
+          IOS_SIMULATOR_OS: ${{ steps.simulator.outputs.runtime }}
+          IOS_DEVICE_NAME: iPhone 17 Pro
+        run: make test-example-ios
+
+      - name: Upload test diagnostics on failure
+        if: failure()
+        uses: actions/upload-artifact@v7
+        with:
+          name: Example UI Test Diagnostics
+          path: |
+            raw-test-example-ios.log
+            build/ExampleUITests/*.xcresult

Example/Example.yml

@@ -58,11 +58,27 @@ targets:
         ENABLE_USER_SELECTED_FILES: readonly
         ENABLE_PREVIEWS: YES
         ASSETCATALOG_COMPILER_APPICON_NAME: AppIcon
+  ExampleUITests:
+    type: bundle.ui-testing
+    platform: iOS
+    sources:
+      - path: UITests
+    dependencies:
+      - target: Example
+    settings:
+      base:
+        SWIFT_VERSION: "5.0"
+        GENERATE_INFOPLIST_FILE: YES
+        TEST_TARGET_NAME: Example
 schemes:
   Example:
     build:
       targets:
         Example: all
+    test:
+      config: Debug
+      targets:
+        - ExampleUITests
     run:
       config: Debug
     profile:

Example/UITests/ExampleLaunchTests.swift

@@ -0,0 +1,26 @@
+//
+//  ExampleLaunchTests.swift
+//  TPPDF
+//
+//  Created by Philip Niedertscheider on 12.10.2026.
+//  Copyright © 2016-2026 techprimate GmbH. All rights reserved.
+//
+
+import XCTest
+
+final class ExampleLaunchTests: XCTestCase {
+    @MainActor
+    func testAppLaunchesWithoutErrors() {
+        continueAfterFailure = false
+        let app = XCUIApplication()
+        app.launch()
+        defer { app.terminate() }
+
+        XCTAssertTrue(app.navigationBars["Examples"].waitForExistence(timeout: 10))
+        XCTAssertEqual(app.state, .runningForeground)
+        XCTAssertFalse(app.alerts.firstMatch.exists)
+        XCTAssertFalse(app.staticTexts.matching(
+            NSPredicate(format: "label BEGINSWITH %@", "Generation failed:")
+        ).firstMatch.exists)
+    }
+}

Makefile

@@ -214,6 +214,22 @@ build-example-ios: generate-example
 		-derivedDataPath build/Example \
 		CODE_SIGNING_ALLOWED=NO build | xcbeautify --preserve-unbeautified
 
+## Run the SwiftUI example launch smoke test on iOS Simulator
+#
+# Builds and launches the example app on the configured iOS Simulator.
+# Writes logs to raw-test-example-ios.log and saves results in build/ExampleUITests.
+.PHONY: test-example-ios
+test-example-ios: generate-example
+	set -o pipefail && NSUnbufferedIO=YES xcrun xcodebuild \
+		-project Example/Example.xcodeproj \
+		-scheme Example \
+		-destination 'platform=iOS Simulator,OS=$(IOS_SIMULATOR_OS),name=$(IOS_DEVICE_NAME)' \
+		-derivedDataPath build/Example \
+		-resultBundlePath build/ExampleUITests/$(shell date +%Y%m%d-%H%M%S).xcresult \
+		-only-testing:ExampleUITests \
+		-parallel-testing-enabled NO \
+		CODE_SIGNING_ALLOWED=NO test | tee raw-test-example-ios.log | xcbeautify --preserve-unbeautified
+
 ## Build the SwiftUI example for Mac Catalyst
 #
 # Builds the SwiftUI example app without requiring signing credentials.