114 lines
3.4 KiB
Markdown
114 lines
3.4 KiB
Markdown
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# 6\. Asset Change Test
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## Learning Objectives
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This exercise will teach you a popular pattern in Game Tests to verify if Assets change over time.
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## Exercise
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As you noticed inside LostCrypt, when you pick up the Wand, your character equips armor.
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Write a test that checks that after Sara picks up the wand, armor is equipped.
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1. Create a `WandTests.cs` class and implement `MainScene\_CharacterReachesWandAndEquipsArmor` test.
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2. Try to observe how `Sara Variant` or more specifically `puppet_sara` GameObject changes the moment you pick up the wand.
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## Hints
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* You can reuse code from [Reach Wand Test](./reach-wand-test.md) for the logic of the character picking up the wand. Or you can try to trigger this action programmatically.
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* Remember that if some Unity internal APIs are not accessible for your test you might need to add a new reference inside the `PlayModeTests` assembly definition.
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## Solution
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PlayModeTests.asmdef
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```
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{
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"name": "PlayModeTests",
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"rootNamespace": "",
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"references": [
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"Unity.InputSystem",
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"Unity.InputSystem.TestFramework",
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"TestInputControl",
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"UnityEngine.TestRunner",
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"Unity.2D.Animation.Runtime"
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],
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"includePlatforms": [],
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"excludePlatforms": [],
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"allowUnsafeCode": false,
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"overrideReferences": true,
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"precompiledReferences": [
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"nunit.framework.dll"
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],
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"autoReferenced": false,
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"defineConstraints": [
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"UNITY_INCLUDE_TESTS"
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],
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"versionDefines": [],
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"noEngineReferences": false
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}
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```
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WandTests.cs
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```
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using System.Collections;
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using NUnit.Framework;
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using UnityEngine;
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using UnityEngine.TestTools;
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using UnityEngine.SceneManagement;
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using UnityEngine.Experimental.U2D.Animation;
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public class WandTests
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{
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private Transform _characterTransform;
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private float _testTimeout = 25.0f;
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private float _wandLocation = 21.080f;
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[UnityTest]
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public IEnumerator MainScene_CharacterReachesWandAndEquipsArmor()
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{
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SceneManager.LoadScene("Assets/Scenes/Main.unity", LoadSceneMode.Single);
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// Skip first frame so Sara have a chance to appear on the screen
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yield return null;
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var puppet = GameObject.Find("puppet_sara");
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var spriteLibrary = puppet.GetComponent<SpriteLibrary>();
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Assert.AreEqual(spriteLibrary.spriteLibraryAsset.name, "Sara");
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var elapsedTime = 0.0f;
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yield return GoRight();
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while (GetCurrentCharacterPosition() <= _wandLocation)
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{
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yield return null;
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elapsedTime += Time.deltaTime;
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if (elapsedTime > _testTimeout)
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{
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Assert.Fail($"Character did not reach location position in {_testTimeout} seconds.");
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}
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}
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// Wait for Wand pickup animation to be over.
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yield return new WaitForSeconds(12);
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Assert.AreEqual(spriteLibrary.spriteLibraryAsset.name, "Sara_var01");
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}
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private float GetCurrentCharacterPosition()
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{
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// Get Main character's Transform which is used to manipulate position.
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if (_characterTransform == null)
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{
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_characterTransform = GameObject.Find("Sara Variant").transform;
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}
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return _characterTransform.position.x;
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}
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private IEnumerator GoRight()
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{
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TestInputControl.MoveLeft = false;
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yield return null;
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TestInputControl.MoveRight = true;
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}
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}
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```
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