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Align C# implementation with Java

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Summary:
- Align C# implementation with Java JNI implementation
  - No need to call init(reinit)
  - Rename Initialize and Reset
- Add unittests

Reviewed By: emilsjolander

Differential Revision: D4009351

fbshipit-source-id: 191ddec30b0c8518eb0d76c0579afe909b673fac
This commit is contained in:
Kazuki Sakamoto
2016-10-13 07:52:44 -07:00
committed by Facebook Github Bot
parent 2a8a4e10c6
commit 722bfb9032
3 changed files with 108 additions and 31 deletions
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3
README.md
View File

@@ -77,7 +77,6 @@ root.setStyleHeight(100);
for (int i = 0; i < 10; i++) {
CSSNode child = new CSSNode();
child.init();
child.setStyleHeight(10);
root.addChildAt(child, 0);
}
@@ -116,14 +115,12 @@ The full API can be found in `csharp/Facebook.CSSLayout/CSSNode.cs`.
```csharp
var root = new CSSNode();
root.Initialize();
root.StyleWidth = 100;
root.StyleHeight = 100;
for (var i = 0; i < 10; i++)
{
var child = new CSSNode();
child.Initialize();
child.StyleHeight = 10;
root.Insert(0, child);
}

32
csharp/Facebook.CSSLayout/CSSNode.cs
View File

@@ -30,6 +30,7 @@ namespace Facebook.CSSLayout
{
_measureFunc = MeasureInternal;
_printFunc = PrintInternal;
Reinitialize();
}
private void AssertNativeInstance()
@@ -72,8 +73,27 @@ namespace Facebook.CSSLayout
private void FreeManaged()
{
_children = null;
_parent = null;
if (_children != null)
{
for (int i = 0; i < _children.Count; ++i)
{
var child = _children[i];
child.AssertNativeInstance();
child._parent = null;
Native.CSSNodeRemoveChild(_cssNode, child._cssNode);
}
_children = null;
}
if (_parent != null)
{
var parent = _parent.Target as CSSNode;
parent.AssertNativeInstance();
parent._children.Remove(this);
Native.CSSNodeRemoveChild(parent._cssNode, _cssNode);
_parent = null;
}
_measureFunction = null;
}
@@ -86,7 +106,7 @@ namespace Facebook.CSSLayout
}
}
public void Initialize()
public void Reinitialize()
{
if (_cssNode != IntPtr.Zero)
{
@@ -99,9 +119,13 @@ namespace Facebook.CSSLayout
Native.CSSNodeSetPrintFunc(_cssNode, _printFunc);
}
public void Reset()
public void Free()
{
AssertNativeInstance();
if (_parent != null || (_children != null && _children.Count > 0))
{
throw new InvalidOperationException("You should not free an attached CSSNode");
}
FreeManaged();
FreeUnmanaged();
}

104
csharp/tests/Facebook.CSSLayout/CSSNodeTest.cs
View File

@@ -22,9 +22,7 @@ namespace Facebook.CSSLayout
public void TestAddChildGetParent()
{
CSSNode parent = new CSSNode();
parent.Initialize();
CSSNode child = new CSSNode();
child.Initialize();
Assert.IsNull(child.Parent);
Assert.AreEqual(0, parent.Count);
@@ -46,11 +44,8 @@ namespace Facebook.CSSLayout
public void TestCannotAddChildToMultipleParents()
{
CSSNode parent1 = new CSSNode();
parent1.Initialize();
CSSNode parent2 = new CSSNode();
parent2.Initialize();
CSSNode child = new CSSNode();
child.Initialize();
parent1.Insert(0, child);
parent2.Insert(0, child);
@@ -61,8 +56,7 @@ namespace Facebook.CSSLayout
public void TestAlreadyInitialize()
{
CSSNode node = new CSSNode();
node.Initialize();
node.Initialize();
node.Reinitialize();
}
[Test]
@@ -70,15 +64,25 @@ namespace Facebook.CSSLayout
public void TestNullNativePointer()
{
CSSNode node = new CSSNode();
node.Free();
node.CalculateLayout();
}
[Test]
[ExpectedException("System.InvalidOperationException")]
public void TestNullNativePointerWithReset()
public void TestDoubleFree()
{
CSSNode node = new CSSNode();
node.Reset();
node.Free();
node.Free();
}
[Test]
public void TestReinitialize()
{
CSSNode node = new CSSNode();
node.Free();
node.Reinitialize();
}
[Test]
@@ -86,18 +90,15 @@ namespace Facebook.CSSLayout
public void TestDisposed()
{
CSSNode node = new CSSNode();
node.Initialize();
node.Dispose();
node.CalculateLayout();
}
[Test]
public void TestReset()
public void TestFree()
{
CSSNode node = new CSSNode();
node.Initialize();
node.Reset();
node.Initialize();
node.Free();
}
[Test]
@@ -106,8 +107,6 @@ namespace Facebook.CSSLayout
ForceGC();
Assert.AreEqual(0, CSSNode.GetInstanceCount());
CSSNode node = new CSSNode();
Assert.AreEqual(0, CSSNode.GetInstanceCount());
node.Initialize();
Assert.AreEqual(1, CSSNode.GetInstanceCount());
node.Dispose();
Assert.AreEqual(0, CSSNode.GetInstanceCount());
@@ -120,8 +119,6 @@ namespace Facebook.CSSLayout
Assert.AreEqual(0, CSSNode.GetInstanceCount());
using (CSSNode node = new CSSNode())
{
Assert.AreEqual(0, CSSNode.GetInstanceCount());
node.Initialize();
Assert.AreEqual(1, CSSNode.GetInstanceCount());
}
Assert.AreEqual(0, CSSNode.GetInstanceCount());
@@ -140,8 +137,7 @@ namespace Facebook.CSSLayout
private void TestDestructorForGC()
{
CSSNode node = new CSSNode();
Assert.AreEqual(0, CSSNode.GetInstanceCount());
node.Initialize();
Assert.IsNotNull(node);
Assert.AreEqual(1, CSSNode.GetInstanceCount());
node = null;
}
@@ -159,8 +155,6 @@ namespace Facebook.CSSLayout
private void TestDestructorWithChildrenForGC1()
{
CSSNode node = new CSSNode();
Assert.AreEqual(0, CSSNode.GetInstanceCount());
node.Initialize();
Assert.AreEqual(1, CSSNode.GetInstanceCount());
TestDestructorWithChildrenForGC2(node, 1);
@@ -177,14 +171,76 @@ namespace Facebook.CSSLayout
private void TestDestructorWithChildrenForGC2(CSSNode parent, int count)
{
CSSNode child = new CSSNode();
Assert.AreEqual(count, CSSNode.GetInstanceCount());
child.Initialize();
Assert.AreEqual(count + 1, CSSNode.GetInstanceCount());
parent.Insert(0, child);
child = null;
}
[Test]
[ExpectedException("System.InvalidOperationException")]
public void TestFreeParent()
{
CSSNode parent = new CSSNode();
CSSNode child = new CSSNode();
parent.Insert(0, child);
parent.Free();
}
[Test]
[ExpectedException("System.InvalidOperationException")]
public void TestFreeChild()
{
CSSNode parent = new CSSNode();
CSSNode child = new CSSNode();
parent.Insert(0, child);
child.Free();
}
[Test]
public void TestDisposeParent()
{
ForceGC();
Assert.AreEqual(0, CSSNode.GetInstanceCount());
CSSNode parent = new CSSNode();
Assert.AreEqual(1, CSSNode.GetInstanceCount());
TestDisposeParentForGC(parent);
ForceGC();
Assert.AreEqual(2, CSSNode.GetInstanceCount());
parent.Dispose();
ForceGC();
Assert.AreEqual(0, CSSNode.GetInstanceCount());
}
private void TestDisposeParentForGC(CSSNode parent)
{
CSSNode child = new CSSNode();
Assert.AreEqual(2, CSSNode.GetInstanceCount());
parent.Insert(0, child);
child = null;
}
[Test]
public void TestDisposeChild()
{
ForceGC();
Assert.AreEqual(0, CSSNode.GetInstanceCount());
CSSNode parent = new CSSNode();
CSSNode child0 = new CSSNode();
CSSNode child1 = new CSSNode();
Assert.AreEqual(3, CSSNode.GetInstanceCount());
Assert.AreEqual(0, parent.Count);
parent.Insert(0, child1);
Assert.AreEqual(0, parent.IndexOf(child1));
parent.Insert(0, child0);
Assert.AreEqual(0, parent.IndexOf(child0));
Assert.AreEqual(1, parent.IndexOf(child1));
child0.Dispose();
Assert.AreEqual(2, CSSNode.GetInstanceCount());
Assert.AreEqual(1, parent.Count);
Assert.AreEqual(0, parent.IndexOf(child1));
}
private void ForceGC()
{
GC.Collect(GC.MaxGeneration);