Tile Highlighting Test

Test Case: testTileHighlightOnHover in TerrainComponentTest

Objective: Confirm that hovering over a tile changes its texture based on the game's conditions, such as the player's currency or existing entities in the tile.

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Overview:

The TerrainComponent class provides functionality to highlight tiles when they are hovered over by the cursor. Depending on the game's state, such as available currency or if a tower is placed, the tile might be highlighted in different colors. This test aims to confirm that these conditions correctly influence the tile's highlighting.

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Steps:

1. Initialize TerrainComponent:

   • Set up a mock TerrainComponent with a specified orientation, say TerrainOrientation.ORTHOGONAL for this test.

2. Mock Gdx Input:

   • Use Mockito to mock the Gdx.input object.
   • Simulate a mouse position by setting values for getX() and getY() methods.

3. Mock Map Components:

   • Create mock objects for the map layers, cells, and tiles to emulate a real map environment.

4. Simulate Mouse Hover:

   • Call the hoverHighlight() method of TerrainComponent.

5. Validation:

   • Depending on the test scenario (e.g., having enough currency to buy a tower or not), verify that the setTextureRegion method of the mock tile is called with the expected texture (e.g., green or red).

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Expected Outcome:

When the mouse hovers over a tile, the tile's texture should be updated to represent the game's current state (e.g., whether the player can afford a tower or not).

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Potential Challenges:

1. Multiple Hover Regions: If the game design includes multiple hover states based on several conditions, this test might need to be adapted or expanded to cover those scenarios.

2. Interactions with Other Systems: Ensure that the highlighting mechanism's interactions with other game systems are isolated so they don't interfere with the basic functionality of tile highlighting on hover.

3. Tile Boundaries: It's essential to ensure that the highlighted region is constrained to the boundaries of the tile and does not overflow.

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Detailed Test Scenarios:

1. Green Highlight on Hover with Affordability:

   Objective: Ensure that the tile turns green when the player has enough currency to buy a specific tower type.

   Steps:

   • Use the setUp() method to initialize the required mocks.
   • Mock the tower type to be TowerType.WEAPON.
   • Ensure that the entity does not exist on the tile and that the player can afford the tower.
   • Simulate the hover action and verify that the tile's texture region changes to green.

2. Red Highlight on Hover without Affordability:

   Objective: Ensure that the tile turns red when the player does not have enough currency to buy a specific tower type.

   Steps:

   • Use the setUp() method to initialize the required mocks.
   • Mock the tower type to be TowerType.TNT.
   • Ensure that the entity does not exist on the tile and that the player cannot afford the tower.
   • Simulate the hover action and verify that the tile's texture region changes to red.