accessor test

Assets/UniGLTF/Tests/UniGLTF/MeshTests.cs

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+using System;
+using System.Collections.Generic;
+using System.IO;
+using NUnit.Framework;
+
+namespace UniGLTF
+{
+    public class MeshTests
+    {
+        [Test]
+        public void AccessorTest()
+        {
+            byte[] bytes = default;
+            using(var ms = new MemoryStream())
+            using(var w = new BinaryWriter(ms))
+            {
+                w.Write(1.0f);
+                w.Write(2.0f);
+                w.Write(3.0f);
+                w.Write(4.0f);
+                w.Write(5.0f);
+                w.Write(6.0f);
+                w.Write(7.0f);
+                w.Write(8.0f);
+                bytes = ms.ToArray();
+            }
+            var storage = new SimpleStorage(new ArraySegment<byte>(bytes));
+
+            var gltf = new glTF
+            {
+                buffers=new List<glTFBuffer>
+                {
+                    new glTFBuffer
+                    {
+                    }
+                },
+                bufferViews = new List<glTFBufferView>
+                {
+                    new glTFBufferView{
+                        buffer=0,
+                        byteLength=32,
+                        byteOffset=0,                        
+                    }
+                },
+                accessors = new List<glTFAccessor>
+                {
+                    new glTFAccessor{
+                        bufferView = 0,
+                        componentType=glComponentType.FLOAT,
+                        count=2,
+                        byteOffset=0,
+                        type="VEC4",
+                    }
+                }
+            };
+            gltf.buffers[0].OpenStorage(storage);
+
+            var (getter, len) = WeightsAccessor.GetAccessor(gltf, 0);
+            Assert.AreEqual((1.0f, 2.0f, 3.0f, 4.0f), getter(0));
+            Assert.AreEqual((5.0f, 6.0f, 7.0f, 8.0f), getter(1));
+        }
+    }
+}

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