I'm experiencing an issue with my PlayMode tests, where all tests pass individually, but when running 21 or more tests together (using Run Selected or Run All), the same 2 tests fail. From further investigation, it appears that the MonoBehaviour lifecycle events aren't firing when running all of the tests - when I run the tests individually, they fire as expected.
Failing Tests
Tests passing when run individually
These two tests are the only ones that depend on the OnEnable() lifecycle event being triggered. Here is the first test, GivenCursorHasState_WhenEnabled_ThenTheCursorPositionShouldBeRestoredFromState()
[UnityTest] public IEnumerator GivenCursorHasState_WhenEnabled_ThenTheCursorPositionShouldBeRestoredFromState() { // Disable the component, expect OnDisable() to fire selection.enabled = false; yield return null; var state = new CursorState { cursorPosition = 5 }; StateCache.Store(cursor, state); // Enable the component, expect OnEnable() to fire selection.enabled = true; yield return null; var expectedItem = menuItems[5]; var actualItem = selection.GetCurrentItem(); // The next line is where the failure is triggered Assert.AreEqual(expectedItem, actualItem); Assert.AreEqual(expectedItem.transform.position.y, cursor.transform.position.y); Assert.AreNotEqual(expectedItem.transform.position.x, cursor.transform.position.x); Assert.AreEqual(originalCursorPositionX, cursor.transform.position.x); } This is the components, OnEnable() method:
void OnEnable() { var state = StateCache.Get<CursorState>(gameObject); if (state == null) { SelectFirstEnabledItem(); } else { // We might be retaining a position already in state cursorPosition = state.cursorPosition; UpdateCursorPosition(); } } I'm setting up the test with the following method:
[SetUp] public void Setup() { var prefab = AssetDatabase.LoadAssetAtPath<GameObject>("Assets/Prefabs/UI/Menu.prefab"); var menu = GameObject.Instantiate<GameObject>(prefab); selection = menu.GetComponentInChildren<MenuItemSelection>(); menuItems = selection.menuItems; cursor = selection.gameObject; originalCursorPositionX = cursor.transform.position.x; } I've checked the StateCache between steps, and that appears to be working as expected - as in there is no pollution between tests with it being a static class.
I'm hoping I'm just misunderstanding something about how the tests and/or lifecycle events work here. Any guidance is appreciated!
