[WIP] test(nsview): add more ci-compatible nsview-tests

Author: tillhainbach

Tests/SnapshotTestingTests/SnapshotTestingTests.swift

@@ -249,7 +249,7 @@ final class SnapshotTestingTests: XCTestCase {
     button.frame.size = .init(width: 84, height: 32)
     assertSnapshot(
       matching: button,
-      as: .image(windowForDrawing: .init(backingScaleFactor: 1, colorSpace: .genericRGB))
+      as: .image(windowForDrawing: .ci)
     )
     assertSnapshot(matching: button, as: .recursiveDescription)
     #endif
@@ -269,6 +269,22 @@ final class SnapshotTestingTests: XCTestCase {
     #endif
   }
 
+  func testNSViewWithLayerCICompatible() {
+    #if os(macOS)
+    let view = NSView()
+    view.frame = CGRect(x: 0.0, y: 0.0, width: 10.0, height: 10.0)
+    view.wantsLayer = true
+    view.layer?.backgroundColor = NSColor.green.cgColor
+    view.layer?.cornerRadius = 5
+    view.appearance = NSAppearance(named: .aqua)
+    assertSnapshot(
+      matching: view,
+      as: .image(windowForDrawing: .ci)
+    )
+    assertSnapshot(matching: view, as: .recursiveDescription)
+    #endif
+  }
+
   func testPrecision() {
     #if os(iOS) || os(macOS) || os(tvOS)
     #if os(iOS) || os(tvOS)

Tests/SnapshotTestingTests/__Snapshots__/SnapshotTestingTests/testNSViewWithLayerCICompatible.1.png

@@ -0,0 +1,2 @@
+[   A     ! WLU ] h=--- v=--- NSView f=(0,0,10,10) b=(-) => <_NSViewBackingLayer>
+A=autoresizesSubviews, C=canDrawConcurrently, D=needsDisplay, F=flipped, G=gstate, H=hidden (h=by ancestor), L=needsLayout (l=child needsLayout), U=needsUpdateConstraints (u=child needsUpdateConstraints), O=opaque, P=preservesContentDuringLiveResize, S=scaled/rotated, W=wantsLayer (w=ancestor wantsLayer), V=needsVibrancy (v=allowsVibrancy), #=has surface