add unit tests for doc api sample (#552)

Author: vkovec

com.unity.formats.fbx/Tests/FbxApiTests/SampleCodeTest.cs

@@ -0,0 +1,142 @@
+using UnityEngine;
+using UnityEditor;
+using NUnit.Framework;
+using System.Linq;
+using UnityEditor.Formats.Fbx.Exporter;
+using System.IO;
+using Autodesk.Fbx;
+
+namespace FbxExporter.UnitTests
+{
+    /// <summary>
+    /// Unit tests for sample code included in documentation.
+    /// </summary>
+    public class SampleCodeTest
+    {
+        private const string k_tempFolderName = "_safe_to_delete";
+        private string m_tempFolder = Path.Combine(Application.dataPath, k_tempFolderName);
+
+        [SetUp]
+        public void Init()
+        {
+            Assert.That(m_tempFolder, Does.Not.Exist);
+            Directory.CreateDirectory(m_tempFolder);
+        }
+
+        [TearDown]
+        public void Term()
+        {
+            if (Directory.Exists(m_tempFolder))
+            {
+                Directory.Delete(m_tempFolder, recursive: true);
+            }
+        }
+
+        // Export GameObjects sample function
+        public static void ExportGameObjects(Object[] objects)
+        {
+            string filePath = Path.Combine(Application.dataPath, "MyGame.fbx");
+            ModelExporter.ExportObjects(filePath, objects);
+
+            // ModelExporter.ExportObject can be used instead of 
+            // ModelExporter.ExportObjects to export a single game object
+        }
+
+        [Test]
+        public void TestExportGameObjectsSample()
+        {
+            var cube = GameObject.CreatePrimitive(PrimitiveType.Cube);
+            var sphere = GameObject.CreatePrimitive(PrimitiveType.Sphere);
+
+            ExportGameObjects(new Object[] { cube, sphere });
+
+            var filename = "MyGame.fbx";
+            var exportPath = Path.Combine(Application.dataPath, filename);
+            Assert.That(exportPath, Does.Exist);
+
+            Object[] loaded = AssetDatabase.LoadAllAssetsAtPath("Assets/" + filename);
+            Assert.That(loaded, Is.Not.Null.Or.Empty);
+            var loadedMeshes = (from loadedObj in loaded where loadedObj as Mesh != null select loadedObj as Mesh).ToArray();
+
+            Assert.AreEqual(2, loadedMeshes.Length);
+            foreach (var mesh in loadedMeshes)
+            {
+                Assert.Greater(mesh.triangles.Length, 0);
+            }
+
+            File.Delete(exportPath);
+        }
+
+        // Export scene sample
+        protected void ExportScene(string fileName)
+        {
+            using (FbxManager fbxManager = FbxManager.Create())
+            {
+                // configure IO settings.
+                fbxManager.SetIOSettings(FbxIOSettings.Create(fbxManager, Globals.IOSROOT));
+
+                // Export the scene
+                using (Autodesk.Fbx.FbxExporter exporter = Autodesk.Fbx.FbxExporter.Create(fbxManager, "myExporter"))
+                {
+
+                    // Initialize the exporter.
+                    bool status = exporter.Initialize(fileName, -1, fbxManager.GetIOSettings());
+
+                    // Create a new scene to export
+                    FbxScene scene = FbxScene.Create(fbxManager, "myScene");
+
+                    // Export the scene to the file.
+                    exporter.Export(scene);
+                }
+            }
+        }
+
+        [Test]
+        public void TestExportSceneSample()
+        {
+            var filename = "MyGame.fbx";
+            var exportPath = Path.Combine(m_tempFolder, filename);
+            Assert.That(exportPath, Does.Not.Exist);
+
+            ExportScene(exportPath);
+            Assert.That(exportPath, Does.Exist);
+        }
+
+        // Import scene sample
+        protected void ImportScene(string fileName)
+        {
+            using (FbxManager fbxManager = FbxManager.Create())
+            {
+                // configure IO settings.
+                fbxManager.SetIOSettings(FbxIOSettings.Create(fbxManager, Globals.IOSROOT));
+
+                // Import the scene to make sure file is valid
+                using (FbxImporter importer = FbxImporter.Create(fbxManager, "myImporter"))
+                {
+
+                    // Initialize the importer.
+                    bool status = importer.Initialize(fileName, -1, fbxManager.GetIOSettings());
+
+                    // Create a new scene so it can be populated by the imported file.
+                    FbxScene scene = FbxScene.Create(fbxManager, "myScene");
+
+                    // Import the contents of the file into the scene.
+                    importer.Import(scene);
+                }
+            }
+        }
+
+        [Test]
+        public void TestImportSceneSample()
+        {
+            var filename = "MyGame.fbx";
+            var exportPath = Path.Combine(m_tempFolder, filename);
+            Assert.That(exportPath, Does.Not.Exist);
+
+            ExportScene(exportPath);
+            Assert.That(exportPath, Does.Exist);
+
+            ImportScene(exportPath);
+        }
+    }
+}