Add visionOS test

Author: bamx23

.github/workflows/checks.yml

@@ -273,6 +273,11 @@ jobs:
             codecov: false
             action: test
             warnings-as-errors: false
+          - platform: visionOS
+            xcode: ^15
+            codecov: false
+            action: test
+            warnings-as-errors: false
     steps:
       - uses: actions/checkout@v3
       - uses: ./

action.yml

@@ -14,7 +14,7 @@ inputs:
     required: false
   platform:
     description: |
-      Either `iOS`, `tvOS`, `macOS`, `watchOS` or (more rarely)
+      Either `iOS`, `tvOS`, `macOS`, `watchOS`, `visionOS` or (more rarely)
       `mac-catalyst`
       Leave unset and `xcodebuild` decides itself.
     required: false

fixtures/visionOS/.gitignore

@@ -0,0 +1,7 @@
+.DS_Store
+/.build
+/Packages
+/*.xcodeproj
+xcuserdata/
+DerivedData/
+.swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata

fixtures/visionOS/Package.swift

@@ -0,0 +1,23 @@
+// swift-tools-version:5.0
+
+import PackageDescription
+
+let name = "my-fixture"
+
+let pkg = Package(
+    name: name,
+    products: [
+        .library(name: name, targets: [name]),
+    ],
+    targets: [
+        .target(name: name, path: ".", sources: ["code.swift"]),
+        .testTarget(name: "\(name)Tests", path: ".", sources: ["test.swift"]),
+    ]
+)
+
+pkg.platforms = [
+    .macOS(.v10_10),
+    .iOS(.v9),
+    .tvOS(.v9),
+    .watchOS(.v3)
+]

fixtures/visionOS/code.swift

@@ -0,0 +1,3 @@
+#if !os(visionOS)
+#error("!os(visionOS)")
+#endif

fixtures/visionOS/test.swift

@@ -0,0 +1,20 @@
+#if !os(visionOS)
+#error("!os(visionOS)")
+#endif
+
+func foo() -> Int {
+    return 5
+}
+
+func bar() {
+    // deliberate warning
+    foo()
+}
+
+import XCTest
+
+class Test: XCTestCase {
+    func test() {
+        XCTAssertEqual(1, 1)
+    }
+}