---

name: lorcana-test-generation description: Generate basic happy-path tests for Lorcana card abilities. Tests verify ability behavior only - NO property validation tests. Use when implementing or updating card tests. Effects are tested separately in the engine.

Lorcana Test Generation

Generate test files for Lorcana card definitions using LorcanaTestEngine.

When to Use

• User requests to generate tests for a card
• After card migration is complete
• User wants to update existing tests
• User asks to test a specific ability

Process

Input

Card File: Path to card definition (e.g., src/cards/001/characters/007-heihei-boat-snack.ts)

Workflow

1. Read Card Definition

   • Load card file from src/cards/001/
   • Extract abilities array

2. Identify Ability Types

   • Keyword: Simple presence check
   • Triggered: When/whenever triggers
   • Activated: Cost → effect abilities
   • Static: Continuous effects

3. Generate Tests (Interactive)

   • For each ability: show template, ask for confirmation
   • User can: generate, skip, or customize
   • Compile confirmed tests into single file

4. Write Test File

   • Create at same location as card: {file}.test.ts
   • Use LorcanaTestEngine and PLAYER_ONE from @tcg/lorcana/testing

Test Templates

Keyword Test

Copyit("has [Keyword] keyword", () => {
  const testEngine = new LorcanaTestEngine({ play: [cardUnderTest] });
  const card = testEngine.getCardModel(cardUnderTest);
  expect(card.hasKeyword()).toBe(true);
});

Triggered Test (When You Play)

Copyit("triggers effect when played", () => {
  const testEngine = new LorcanaTestEngine({ hand: [cardUnderTest] });
  const before = testEngine.getZone("hand", PLAYER_ONE).length;

  testEngine.playCard(cardUnderTest.id);

  const after = testEngine.getZone("hand", PLAYER_ONE).length;
  expect(after).toBe(before + 1); // Drew 1, played 1
});

Activated Test

Copyit("activates ability when cost is paid", () => {
  const testEngine = new LorcanaTestEngine({ play: [cardUnderTest] });

  // Exert to activate
  testEngine.quest(cardUnderTest.id);

  const state = testEngine.getCardMeta(cardUnderTest.id);
  expect(state?.state).toBe("exerted");
});

What NOT to Test

Do NOT test property values (cost, strength, willpower, lore, cardNumber, etc.) - these are data, not behavior.

Output Format

CopyTest Generation Complete
========================
Card: [Name] - [Version]
File: src/cards/001/characters/xxx-name.test.ts

Tests Generated: X
- Keywords: Y
- Triggered: Z
- Activated: W
- Skipped: V

Run Tests: bun test src/cards/001/characters/xxx-name.test.ts

Example Session

Copy> write-card-test 007-heihei-boat-snack

Reading card: src/cards/001/characters/007-heihei-boat-snack.ts
Found 1 ability

[Ability 1/1: Keyword - Support]
Test: hasSupport() verification

Generate test? (yes/no/customize) yes

✓ Test file created
File: src/cards/001/characters/007-heihei-boat-snack.test.ts

Run: bun test src/cards/001/characters/007-heihei-boat-snack.test.ts

Completion Report

CopyTest Generation: Complete
========================
File: src/cards/001/characters/xxx-name.test.ts
Tests: X generated

Next Steps:
- Run: bun test src/cards/001/characters/xxx-name.test.ts
- Verify all tests pass
- Commit changes