tests: add test for kwin shortucts for moving windows to adjacent desktops

src/tests/flows/followWindowToDesktop.ts

@@ -0,0 +1,10 @@
+tests.register("Move and follow window to desktop", 20, () => {
+    // This tests the Kwin shortcuts for moving windows to adjacent desktops.
+
+    const config = getDefaultConfig();
+    const { qtMock, workspaceMock, world } = init(config);
+
+    const [client0, client1] = workspaceMock.createClients(2);
+    client1.moveAndFollowToDesktop(workspaceMock.desktops[1], workspaceMock);
+    Assert.equal(workspaceMock.activeWindow, client1);
+});

src/tests/utils/mocks/MockKwinClient.ts

@@ -201,6 +201,13 @@ class MockKwinClient {
         };
     }
 
+    public moveAndFollowToDesktop(desktop: KwinDesktop, workspaceMock: MockWorkspace) {
+        Assert.assert(workspaceMock.activeWindow === this);
+        this._desktops = [desktop];
+        this.desktopsChanged.fire();
+        workspaceMock.currentDesktop = desktop;
+    }
+
     public get tile() {
         return this._tile;
     }

src/tests/utils/mocks/MockWorkspace.ts

@@ -6,12 +6,12 @@ class MockWorkspace {
         { __brand: "KwinDesktop", id: "desktop1" },
         { __brand: "KwinDesktop", id: "desktop2" },
     ];
-    public currentDesktop = this.desktops[0];
     public currentActivity = this.activities[0];
     public activeScreen: Output = { __brand: "Output" };
     public readonly windows: MockKwinClient[] = [];
     public cursorPos = new MockQmlPoint(0, 0);
 
+    private _currentDesktop = this.desktops[0];
     private _activeWindow: KwinClient|null = null;
 
     public readonly currentDesktopChanged = new MockQSignal<[]>();
@@ -126,6 +126,15 @@ class MockWorkspace {
         window.interactiveMoveResizeFinished.fire();
     }
 
+    public get currentDesktop() {
+        return this._currentDesktop;
+    }
+
+    public set currentDesktop(currentDesktop: KwinDesktop) {
+        this._currentDesktop = currentDesktop;
+        this.currentDesktopChanged.fire();
+    }
+
     public get activeWindow() {
         return this._activeWindow;
     }