Initial Commit

Library/PackageCache/com.unity.ugui@1.0.0/Tests/Runtime/Canvas/NestedCanvas.cs

@@ -0,0 +1,102 @@
+using System.IO;
+using UnityEngine;
+using UnityEngine.UI;
+using UnityEngine.TestTools;
+using NUnit.Framework;
+using System.Collections;
+using UnityEditor;
+
+public class NestedCanvas : IPrebuildSetup
+{
+    Object m_GO1;
+    Object m_GO2;
+
+    const string kPrefabPath = "Assets/Resources/NestedCanvasPrefab.prefab";
+
+    public void Setup()
+    {
+#if UNITY_EDITOR
+
+        var rootGO = new GameObject("RootGO");
+
+        var rootCanvasGO = new GameObject("Canvas", typeof(Canvas), typeof(CanvasGroup));
+        rootCanvasGO.transform.SetParent(rootGO.transform);
+
+        var nestedCanvas = new GameObject("Nested Canvas", typeof(Canvas), typeof(Image));
+        nestedCanvas.transform.SetParent(rootCanvasGO.transform);
+
+        var nestedCanvasCamera = new GameObject("Nested Canvas Camera", typeof(Camera));
+        nestedCanvasCamera.transform.SetParent(rootCanvasGO.transform);
+
+        var rootCanvas = rootCanvasGO.GetComponent<Canvas>();
+        rootCanvas.renderMode = RenderMode.WorldSpace;
+        rootCanvas.worldCamera = nestedCanvasCamera.GetComponent<Camera>();
+
+        if (!Directory.Exists("Assets/Resources/"))
+            Directory.CreateDirectory("Assets/Resources/");
+
+        UnityEditor.PrefabUtility.SaveAsPrefabAsset(rootGO, kPrefabPath);
+        GameObject.DestroyImmediate(rootGO);
+#endif
+    }
+
+    [UnityTest]
+    [Description("[UI] Button does not interact after nested canvas is used(case 892913)")]
+    public IEnumerator WorldCanvas_CanFindCameraAfterDisablingAndEnablingRootCanvas()
+    {
+        m_GO1 = Object.Instantiate(Resources.Load("NestedCanvasPrefab"));
+        yield return null;
+
+        var nestedCanvasGo = GameObject.Find("Nested Canvas");
+        var nestedCanvas = nestedCanvasGo.GetComponent<Canvas>();
+        Assert.IsNotNull(nestedCanvas.worldCamera, "Expected the nested canvas worldCamera to NOT be null after loading the scene.");
+
+        nestedCanvasGo.transform.parent.gameObject.SetActive(false);
+        nestedCanvasGo.transform.parent.gameObject.SetActive(true);
+        Assert.IsNotNull(nestedCanvas.worldCamera, "Expected the nested canvas worldCamera to NOT be null after the parent canvas has been re-enabled.");
+    }
+
+    [UnityTest]
+    public IEnumerator WorldCanvas_CanFindTheSameCameraAfterDisablingAndEnablingRootCanvas()
+    {
+        m_GO2 = Object.Instantiate(Resources.Load("NestedCanvasPrefab"));
+        yield return null;
+
+        var nestedCanvasGo = GameObject.Find("Nested Canvas");
+        var nestedCanvas = nestedCanvasGo.GetComponent<Canvas>();
+        var worldCamera = nestedCanvas.worldCamera;
+        nestedCanvasGo.transform.parent.gameObject.SetActive(false);
+        nestedCanvasGo.transform.parent.gameObject.SetActive(true);
+        Assert.AreEqual(worldCamera, nestedCanvas.worldCamera, "Expected the same world camera to be returned after the root canvas was disabled and then re-enabled.");
+    }
+
+    [UnityTest]
+    public IEnumerator NestedCanvasHasProperInheritedAlpha()
+    {
+        GameObject root = (GameObject)Object.Instantiate(Resources.Load("NestedCanvasPrefab"));
+        CanvasGroup group = root.GetComponentInChildren<CanvasGroup>();
+        Image image = root.GetComponentInChildren<Image>();
+
+        group.alpha = 0.5f;
+
+        yield return null;
+
+        Assert.True(image.canvasRenderer.GetInheritedAlpha() == 0.5f);
+        GameObject.DestroyImmediate(root);
+    }
+
+    [TearDown]
+    public void TearDown()
+    {
+        GameObject.DestroyImmediate(m_GO1);
+        GameObject.DestroyImmediate(m_GO2);
+    }
+
+    [OneTimeTearDown]
+    public void OneTimeTearDown()
+    {
+#if UNITY_EDITOR
+        AssetDatabase.DeleteAsset(kPrefabPath);
+#endif
+    }
+}