Initial FocusFixer implementation

Menu-bar utility that fixes cross-display keyboard focus loss: a listen-only CGEvent tap locates the window under the cursor and reasserts app activation + AX focus on it, with debounce, tap auto-recovery, and an Accessibility permission gate. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-08-10 12:02:29 +02:00
commit 561a547b70
18 changed files with 1411 additions and 0 deletions
@@ -0,0 +1,47 @@
+import XCTest
+@testable import FocusFixer
+
+final class WindowLocatorTests: XCTestCase {
+    func testReturnsOwnerPIDWhenPointInsideWindow() {
+        let windows = [
+            WindowInfo(ownerPID: 111, layer: 0, bounds: CGRect(x: 0, y: 0, width: 100, height: 100))
+        ]
+        XCTAssertEqual(WindowLocator.ownerPID(at: CGPoint(x: 50, y: 50), in: windows), 111)
+    }
+
+    func testIgnoresNonZeroLayerWindows() {
+        let windows = [
+            WindowInfo(ownerPID: 999, layer: 25, bounds: CGRect(x: 0, y: 0, width: 100, height: 100))
+        ]
+        XCTAssertNil(WindowLocator.ownerPID(at: CGPoint(x: 50, y: 50), in: windows))
+    }
+
+    func testFallsThroughToNextWindowWhenTopWindowIsWrongLayer() {
+        let windows = [
+            WindowInfo(ownerPID: 1, layer: 25, bounds: CGRect(x: 0, y: 0, width: 100, height: 100)),
+            WindowInfo(ownerPID: 2, layer: 0, bounds: CGRect(x: 0, y: 0, width: 100, height: 100))
+        ]
+        XCTAssertEqual(WindowLocator.ownerPID(at: CGPoint(x: 50, y: 50), in: windows), 2)
+    }
+
+    func testReturnsFrontmostWindowInZOrder() {
+        // Overlapping layer-0 windows: front-to-back order (as returned by
+        // CGWindowListCopyWindowInfo) determines which owner wins.
+        let windows = [
+            WindowInfo(ownerPID: 1, layer: 0, bounds: CGRect(x: 0, y: 0, width: 200, height: 200)),
+            WindowInfo(ownerPID: 2, layer: 0, bounds: CGRect(x: 0, y: 0, width: 200, height: 200))
+        ]
+        XCTAssertEqual(WindowLocator.ownerPID(at: CGPoint(x: 50, y: 50), in: windows), 1)
+    }
+
+    func testEmptyWindowListReturnsNil() {
+        XCTAssertNil(WindowLocator.ownerPID(at: CGPoint(x: 50, y: 50), in: []))
+    }
+
+    func testPointOutsideAllWindowsReturnsNil() {
+        let windows = [
+            WindowInfo(ownerPID: 1, layer: 0, bounds: CGRect(x: 0, y: 0, width: 100, height: 100))
+        ]
+        XCTAssertNil(WindowLocator.ownerPID(at: CGPoint(x: 500, y: 500), in: windows))
+    }
+}