Add some component tests to reference unity project (#86)

* Add some component tests to reference unity project

* Use action/setup-node@v2 to avoid problems with build

unity-project-with-correct-tests/Assets/Scripts/SampleComponent.cs

@@ -0,0 +1,17 @@
+using UnityEngine;
+
+public class SampleComponent : MonoBehaviour
+{
+  public BasicCounter Counter;
+
+  void Start()
+  {
+    Counter = new BasicCounter(5);
+  }
+
+  // Update is called once per frame
+  void Update()
+  {
+    Counter.Increment();
+  }
+}

unity-project-with-correct-tests/Assets/Scripts/SampleComponent.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 7a5f63b9ea4b465194653c4d681faf42
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

unity-project-with-correct-tests/Assets/Scripts/TimerComponent.cs

@@ -0,0 +1,18 @@
+using UnityEngine;
+
+public class TimerComponent : MonoBehaviour
+{
+  public BasicCounter Counter = new BasicCounter();
+  public float Timer = 1f;
+
+  void Update()
+  {
+    Timer -= Time.deltaTime;
+
+    if (Timer > 0)
+      return;
+
+    Counter.Increment();
+    Timer = 1f;
+  }
+}

unity-project-with-correct-tests/Assets/Scripts/TimerComponent.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: b668d68a45bb48108ccda73269e3da7b
+timeCreated: 1610056748

unity-project-with-correct-tests/Assets/Tests/PlayMode/PlayModeTests.asmdef

@@ -2,7 +2,8 @@
     "name": "PlayModeTests",
     "references": [
         "UnityEngine.TestRunner",
-        "UnityEditor.TestRunner"
+        "UnityEditor.TestRunner",
+        "MyScripts"
     ],
     "includePlatforms": [],
     "excludePlatforms": [],

unity-project-with-correct-tests/Assets/Tests/PlayMode/SampleComponentTest.cs

@@ -0,0 +1,31 @@
+using System.Collections;
+using NUnit.Framework;
+using UnityEngine;
+using UnityEngine.TestTools;
+
+namespace Tests
+{
+  public class SampleComponentTest
+  {
+    private GameObject target;
+    private SampleComponent component;
+
+    [SetUp]
+    public void Setup()
+    {
+      target = GameObject.Instantiate(new GameObject());
+      component = target.AddComponent<SampleComponent>();
+    }
+
+    [UnityTest]
+    public IEnumerator TestIncrementOnUpdateAfterNextFrame()
+    {
+      // Save the current value, since it was updated after component Start() method called
+      var count = component.Counter.Count;
+
+      // Skip frame and assert the new value
+      yield return null;
+      Assert.AreEqual(count + 1, component.Counter.Count);
+    }
+  }
+}

unity-project-with-correct-tests/Assets/Tests/PlayMode/SampleComponentTest.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: c688799d17b14d35ad515bff9de8d12c
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

unity-project-with-correct-tests/Assets/Tests/PlayMode/SamplePlayModeTest.cs

@@ -1,7 +1,5 @@
 using System.Collections;
-using System.Collections.Generic;
 using NUnit.Framework;
-using UnityEngine;
 using UnityEngine.TestTools;
 
 namespace Tests
@@ -12,8 +10,14 @@ namespace Tests
     [Test]
     public void NewTestScriptSimplePasses()
     {
-      // Use the Assert class to test conditions
-      Assert.True(true);
+      // Given
+      var counter = new BasicCounter(0);
+
+      // When
+      counter.Increment();
+
+      // Then
+      Assert.AreEqual(1, counter.Count);
     }
 
     // A UnityTest behaves like a coroutine in Play Mode. In Edit Mode you can use
@@ -21,9 +25,18 @@ namespace Tests
     [UnityTest]
     public IEnumerator NewTestScriptWithEnumeratorPasses()
     {
+      // Given
+      var counter = new BasicCounter(3);
+
       // Use the Assert class to test conditions.
       // Use yield to skip a frame.
       yield return null;
+
+      // When
+      counter.Increment();
+
+      // Then
+      Assert.AreEqual(4, counter.Count);
     }
   }
 }

unity-project-with-correct-tests/Assets/Tests/PlayMode/TimerComponentTest.cs

@@ -0,0 +1,66 @@
+using System.Collections;
+using NUnit.Framework;
+using UnityEngine;
+using UnityEngine.TestTools;
+
+namespace Tests
+{
+  public class TimerComponentTest
+  {
+    private GameObject target;
+    private TimerComponent component;
+
+    [SetUp]
+    public void Setup()
+    {
+      target = GameObject.Instantiate(new GameObject());
+      component = target.AddComponent<TimerComponent>();
+    }
+
+    [UnityTest]
+    public IEnumerator TestIncrementAfterSomeTime()
+    {
+      // Save the current value, since it was updated after component Start() method called
+      var count = component.Counter.Count;
+
+      // Skip frame and assert the new value
+      yield return null;
+      Assert.AreEqual(count, component.Counter.Count);
+
+      yield return new WaitForSeconds(1.1f);
+      Assert.AreEqual(count + 1, component.Counter.Count);
+
+      yield return new WaitForSeconds(1.1f);
+      Assert.AreEqual(count + 2, component.Counter.Count);
+    }
+
+    [UnityTest]
+    public IEnumerator TestTimeScaleIsAffectingIncrement()
+    {
+      // Save the current value, since it was updated after component Start() method called
+      var count = component.Counter.Count;
+      Time.timeScale = .5f;
+
+      // Skip frame and assert the new value
+      yield return null;
+      Assert.AreEqual(count, component.Counter.Count);
+
+      yield return WaitForRealSeconds(1.1f);
+      Assert.AreEqual(count, component.Counter.Count);
+
+      yield return WaitForRealSeconds(1.1f);
+      Assert.AreEqual(count + 1, component.Counter.Count);
+    }
+
+    // Skipping time ignoring Time.scale
+    // https://answers.unity.com/questions/301868/yield-waitforseconds-outside-of-timescale.html
+    public static IEnumerator WaitForRealSeconds(float time)
+    {
+      float start = Time.realtimeSinceStartup;
+      while (Time.realtimeSinceStartup < start + time)
+      {
+        yield return null;
+      }
+    }
+  }
+}

unity-project-with-correct-tests/Assets/Tests/PlayMode/TimerComponentTest.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 818b22370d404398b87b47a922a435c9
+timeCreated: 1610056889