diff --git a/SwiftPMTests/swift-test/main.swift b/SwiftPMTests/swift-test/main.swift
index aef491d0..fdfad081 100644
--- a/SwiftPMTests/swift-test/main.swift
+++ b/SwiftPMTests/swift-test/main.swift
@@ -30,20 +30,31 @@ class importTest: XCTestCase {
     XCTAssertFalse(GULAppEnvironmentUtil.isFromAppStore())
     #if targetEnvironment(simulator)
       XCTAssertTrue(GULAppEnvironmentUtil.isSimulator())
+      // Device model should return the host's build architecture (x86_64 or arm64) for iOS, tvOS
+      // watchOS, and visionOS simulators.
+      XCTAssertEqual(GULAppEnvironmentUtil.deviceModel(), buildArchitecture())
     #else
       XCTAssertFalse(GULAppEnvironmentUtil.isSimulator())
+      // Device model should return the appropriate hardware model (e.g., "iPhone12,3" or
+      // "MacBookPro18,2") on real devices.
+      XCTAssertNotEqual(GULAppEnvironmentUtil.deviceModel(), buildArchitecture())
     #endif
     XCTAssertFalse(GULAppEnvironmentUtil.isAppExtension())
 
-    #if os(macOS) || targetEnvironment(macCatalyst)
-      // Device model should now return the appropriate hardware model on macOS.
-      XCTAssertNotEqual(GULAppEnvironmentUtil.deviceModel(), "x86_64")
+    print("System version? Answer: \(GULAppEnvironmentUtil.systemVersion())")
+  }
+
+  func buildArchitecture() -> String {
+    #if arch(arm64)
+      return "arm64"
+    #elseif arch(x86_64)
+      return "x86_64"
     #else
-      // Device model should show up as x86_64 for iOS, tvOS, and watchOS
-      // simulators.
-      XCTAssertEqual(GULAppEnvironmentUtil.deviceModel(), "x86_64")
+      throw TestError(errorDescription: "Unexpected build architecture.")
     #endif
+  }
 
-    print("System version? Answer: \(GULAppEnvironmentUtil.systemVersion())")
+  struct TestError: Error {
+    var errorDescription: String?
   }
 }