!3786 test(#I6B5SF): add unit test for TreeNodeCache extension class

* test: add SetChildrenCheck unit test
* test: add SetChildrenCheck unit test

Author: ArgoZhang

test/UnitTest/Components/TreeViewTest.cs

@@ -277,6 +277,22 @@ public void CascadeSetCheck_Ok()
         Assert.True(node.GetAllTreeSubItems().All(i => i.CheckedState == CheckboxState.Checked));
     }
 
+    [Fact]
+    public void SetParentCheck_Ok()
+    {
+        var items = new List<TreeFoo>()
+        {
+            new TreeFoo() { Text = "Test1", Id = "01" },
+            new TreeFoo() { Text = "Test2", Id = "02", ParentId = "01" },
+            new TreeFoo() { Text = "Test3", Id = "03", ParentId = "02" }
+        };
+        var node = TreeFoo.CascadingTree(items).First().Items.First().Items.First();
+
+        // 设置当前几点所有父项选中状态
+        node.SetParentCheck<TreeViewItem<TreeFoo>, TreeFoo>(CheckboxState.Checked);
+        Assert.True(node.GetAllTreeSubItems().All(i => i.CheckedState == CheckboxState.Checked));
+    }
+
     [Fact]
     public async Task ClickToggleNode_Ok()
     {

test/UnitTest/Misc/TreeNodeCacheTest.cs

@@ -211,6 +211,21 @@ public void FindParentNode_Ok()
         Assert.Equal("1080", targetId);
     }
 
+    [Fact]
+    public void SetChildrenCheck_Ok()
+    {
+        var items = TreeFoo.GetTreeItems();
+        var nodeCache = new TreeNodeCache<TreeViewItem<TreeFoo>, TreeFoo>(Comparer);
+        var count = GetUncheckItemCount(nodeCache);
+        Assert.Equal(0, count);
+
+        var node = nodeCache.FindParentNode(items, new TreeViewItem<TreeFoo>(new TreeFoo() { Id = "1110" }));
+        Assert.NotNull(node);
+        node.SetChildrenCheck(CheckboxState.UnChecked, nodeCache);
+        count = GetUncheckItemCount(nodeCache);
+        Assert.Equal(6, count);
+    }
+
     [Fact]
     public void Reset_Ok()
     {