/** * Copyright (c) 2014-present, Facebook, Inc. * All rights reserved. * * This source code is licensed under the BSD-style license found in the * LICENSE file in the root directory of this source tree. An additional grant * of patent rights can be found in the PATENTS file in the same directory. */ using NUnit.Framework; using System; /** * Tests for {@link CSSNode}. */ namespace Facebook.CSSLayout { [TestFixture] public class CSSNodeTest { [Test] public void TestAddChildGetParent() { CSSNode parent = new CSSNode(); CSSNode child = new CSSNode(); Assert.IsNull(child.Parent); Assert.AreEqual(0, parent.Count); parent.Insert(0, child); Assert.AreEqual(1, parent.Count); Assert.AreEqual(child, parent[0]); Assert.AreEqual(parent, child.Parent); parent.RemoveAt(0); Assert.IsNull(child.Parent); Assert.AreEqual(0, parent.Count); } [Test] public void TestChildren() { CSSNode parent = new CSSNode(); foreach (CSSNode node in parent) { Assert.Fail(node.ToString()); } CSSNode child0 = new CSSNode(); Assert.AreEqual(-1, parent.IndexOf(child0)); parent.Insert(0, child0); foreach (CSSNode node in parent) { Assert.AreEqual(0, parent.IndexOf(node)); } CSSNode child1 = new CSSNode(); parent.Insert(1, child1); int index = 0; foreach (CSSNode node in parent) { Assert.AreEqual(index++, parent.IndexOf(node)); } parent.RemoveAt(0); Assert.AreEqual(-1, parent.IndexOf(child0)); Assert.AreEqual(0, parent.IndexOf(child1)); parent.Clear(); Assert.AreEqual(0, parent.Count); parent.Clear(); Assert.AreEqual(0, parent.Count); } [Test] [ExpectedException("System.NullReferenceException")] public void TestRemoveAtFromEmpty() { CSSNode parent = new CSSNode(); parent.RemoveAt(0); } [Test] [ExpectedException("System.ArgumentOutOfRangeException")] public void TestRemoveAtOutOfRange() { CSSNode parent = new CSSNode(); CSSNode child = new CSSNode(); parent.Insert(0, child); parent.RemoveAt(1); } [Test] [ExpectedException("System.InvalidOperationException")] public void TestCannotAddChildToMultipleParents() { CSSNode parent1 = new CSSNode(); CSSNode parent2 = new CSSNode(); CSSNode child = new CSSNode(); parent1.Insert(0, child); parent2.Insert(0, child); } [Test] public void TestReset() { int instanceCount = CSSNode.GetInstanceCount(); CSSNode node = new CSSNode(); Assert.AreEqual(instanceCount + 1, CSSNode.GetInstanceCount()); node.Reset(); Assert.AreEqual(instanceCount + 1, CSSNode.GetInstanceCount()); } [Test] [ExpectedException("System.InvalidOperationException")] public void TestResetParent() { CSSNode parent = new CSSNode(); CSSNode child = new CSSNode(); parent.Insert(0, child); parent.Reset(); } [Test] [ExpectedException("System.InvalidOperationException")] public void TestResetChild() { CSSNode parent = new CSSNode(); CSSNode child = new CSSNode(); parent.Insert(0, child); child.Reset(); } [Test] public void TestClear() { int instanceCount = CSSNode.GetInstanceCount(); CSSNode parent = new CSSNode(); Assert.AreEqual(instanceCount + 1, CSSNode.GetInstanceCount()); CSSNode child = new CSSNode(); Assert.AreEqual(instanceCount + 2, CSSNode.GetInstanceCount()); parent.Insert(0, child); Assert.AreEqual(1, parent.Count); Assert.AreEqual(parent, child.Parent); parent.Clear(); Assert.AreEqual(0, parent.Count); Assert.IsNull(child.Parent); Assert.AreEqual(instanceCount + 2, CSSNode.GetInstanceCount()); } [Test] public void TestMeasureFunc() { CSSNode node = new CSSNode(); node.SetMeasureFunction((_, width, widthMode, height, heightMode) => { return MeasureOutput.Make(100, 150); }); node.CalculateLayout(); Assert.AreEqual(100, node.LayoutWidth); Assert.AreEqual(150, node.LayoutHeight); } [Test] public void TestMeasureFuncWithFloat() { CSSNode node = new CSSNode(); node.SetMeasureFunction((_, width, widthMode, height, heightMode) => { return MeasureOutput.Make(123.4f, 81.7f); }); node.CalculateLayout(); Assert.AreEqual(123, node.LayoutWidth); Assert.AreEqual(81, node.LayoutHeight); } [Test] [ExpectedException("System.InvalidOperationException")] public void TestChildWithMeasureFunc() { CSSNode node = new CSSNode(); node.SetMeasureFunction((_, width, widthMode, height, heightMode) => { return MeasureOutput.Make(100, 150); }); CSSNode child = new CSSNode(); node.Insert(0, child); } [Test] [ExpectedException("System.InvalidOperationException")] public void TestMeasureFuncWithChild() { CSSNode node = new CSSNode(); CSSNode child = new CSSNode(); node.Insert(0, child); node.SetMeasureFunction((_, width, widthMode, height, heightMode) => { return MeasureOutput.Make(100, 150); }); } [Test] public void TestPrint() { CSSNode parent = new CSSNode(); parent.StyleWidth = 100; parent.StyleHeight = 120; CSSNode child0 = new CSSNode(); child0.StyleWidth = 30; child0.StyleHeight = 40; CSSNode child1 = new CSSNode(); child1.StyleWidth = 35; child1.StyleHeight = 45; parent.Insert(0, child0); parent.Insert(0, child1); parent.CalculateLayout(); Assert.AreEqual(parent.Print(), "{layout: {width: 100, height: 120, top: 0, left: 0}, flexDirection: 'column', alignItems: 'stretch', flexGrow: 0, flexShrink: 0, overflow: 'visible', width: 100, height: 120, children: [\n {layout: {width: 35, height: 45, top: 0, left: 0}, flexDirection: 'column', alignItems: 'stretch', flexGrow: 0, flexShrink: 0, overflow: 'visible', width: 35, height: 45, },\n {layout: {width: 30, height: 40, top: 45, left: 0}, flexDirection: 'column', alignItems: 'stretch', flexGrow: 0, flexShrink: 0, overflow: 'visible', width: 30, height: 40, },\n]},\n"); } private void ForceGC() { GC.Collect(GC.MaxGeneration); GC.WaitForPendingFinalizers(); } #if !UNITY_EDITOR [Test] public void TestDestructor() { ForceGC(); int instanceCount = CSSNode.GetInstanceCount(); TestDestructorForGC(instanceCount); ForceGC(); Assert.AreEqual(instanceCount, CSSNode.GetInstanceCount()); } private void TestDestructorForGC(int instanceCount) { CSSNode node = new CSSNode(); Assert.IsNotNull(node); Assert.AreEqual(instanceCount + 1, CSSNode.GetInstanceCount()); node = null; } [Test] public void TestDestructorWithChildren() { ForceGC(); int instanceCount = CSSNode.GetInstanceCount(); TestDestructorWithChildrenForGC1(instanceCount); ForceGC(); Assert.AreEqual(instanceCount, CSSNode.GetInstanceCount()); } private void TestDestructorWithChildrenForGC1(int instanceCount) { CSSNode node = new CSSNode(); Assert.AreEqual(instanceCount + 1, CSSNode.GetInstanceCount()); TestDestructorWithChildrenForGC2(node, instanceCount + 1); ForceGC(); Assert.AreEqual(instanceCount + 2, CSSNode.GetInstanceCount()); TestDestructorWithChildrenForGC2(node, instanceCount + 2); ForceGC(); Assert.AreEqual(instanceCount + 3, CSSNode.GetInstanceCount()); node = null; } private void TestDestructorWithChildrenForGC2(CSSNode parent, int instanceCount) { CSSNode child = new CSSNode(); Assert.AreEqual(instanceCount + 1, CSSNode.GetInstanceCount()); parent.Insert(0, child); child = null; } [Test] public void TestParentDestructor() { ForceGC(); int instanceCount = CSSNode.GetInstanceCount(); CSSNode child = new CSSNode(); Assert.AreEqual(instanceCount + 1, CSSNode.GetInstanceCount()); TestParentDestructorForGC(child, instanceCount + 1); ForceGC(); Assert.IsNull(child.Parent); Assert.AreEqual(instanceCount + 1, CSSNode.GetInstanceCount()); } private void TestParentDestructorForGC(CSSNode child, int instanceCount) { CSSNode parent = new CSSNode(); Assert.AreEqual(instanceCount + 1, CSSNode.GetInstanceCount()); parent.Insert(0, child); } [Test] public void TestClearWithChildDestructor() { ForceGC(); int instanceCount = CSSNode.GetInstanceCount(); CSSNode node = new CSSNode(); Assert.AreEqual(instanceCount + 1, CSSNode.GetInstanceCount()); TestClearWithChildDestructorForGC(node, instanceCount + 1); ForceGC(); Assert.AreEqual(instanceCount + 2, CSSNode.GetInstanceCount()); node.Clear(); Assert.AreEqual(0, node.Count); ForceGC(); Assert.AreEqual(instanceCount + 1, CSSNode.GetInstanceCount()); } private void TestClearWithChildDestructorForGC(CSSNode parent, int instanceCount) { CSSNode child = new CSSNode(); Assert.AreEqual(instanceCount + 1, CSSNode.GetInstanceCount()); parent.Insert(0, child); } [Test] public void TestMeasureFuncWithDestructor() { ForceGC(); int instanceCount = CSSNode.GetInstanceCount(); CSSNode parent = new CSSNode(); Assert.AreEqual(instanceCount + 1, CSSNode.GetInstanceCount()); TestMeasureFuncWithDestructorForGC(parent); ForceGC(); Assert.AreEqual(instanceCount + 2, CSSNode.GetInstanceCount()); parent.CalculateLayout(); Assert.AreEqual(120, (int)parent.LayoutWidth); Assert.AreEqual(130, (int)parent.LayoutHeight); } private void TestMeasureFuncWithDestructorForGC(CSSNode parent) { CSSNode child = new CSSNode(); parent.Insert(0, child); child.SetMeasureFunction((_, width, widthMode, height, heightMode) => { return MeasureOutput.Make(120, 130); }); } #endif } }