add new assert action

Author: beakerandjake

src/actions/assertPuzzleHasLevel.js

@@ -0,0 +1,21 @@
+import { logger } from '../logger.js';
+import { getConfigValue } from '../config.js';
+
+/**
+ * Asserts that the days puzzle has the level.
+ * All days have two levels except for the last day which has one.
+ */
+export const assertPuzzleHasLevel = ({ day, level } = {}) => {
+  // no need to validate if not the last day.
+  if (day !== getConfigValue('aoc.validation.days').at(-1)) {
+    return true;
+  }
+
+  // only level one is valid on the last day.
+  if (level !== 1) {
+    logger.error('Day 25 only has one level.');
+    return false;
+  }
+
+  return true;
+};

tests/actions/assertPuzzleHasLevel.test.js

@@ -0,0 +1,40 @@
+import { describe, jest, test, afterEach } from '@jest/globals';
+import { mockConfig, mockLogger } from '../mocks.js';
+
+// setup mocks
+mockLogger();
+const { getConfigValue } = mockConfig();
+
+// import after mocks set up
+const { assertPuzzleHasLevel } = await import(
+  '../../src/actions/assertPuzzleHasLevel.js'
+);
+
+describe('assertPuzzleHasLevel()', () => {
+  afterEach(() => {
+    jest.resetAllMocks();
+  });
+
+  test('returns true if not last day', () => {
+    const days = [1, 2, 3, 4, 5];
+    getConfigValue.mockReturnValue(days);
+    for (let i = 0; i < days.length - 1; i++) {
+      const result = assertPuzzleHasLevel({ year: 2022, day: days[i], level: 1 });
+      expect(result).toBe(true);
+    }
+  });
+
+  test('returns false if last day and level is two', () => {
+    const days = [1, 2, 3, 4, 5];
+    getConfigValue.mockReturnValue(days);
+    const result = assertPuzzleHasLevel({ year: 2022, day: days.at(-1), level: 2 });
+    expect(result).toBe(false);
+  });
+
+  test('returns true if last day and level is one', () => {
+    const days = [1, 2, 3, 4, 5];
+    getConfigValue.mockReturnValue(days);
+    const result = assertPuzzleHasLevel({ year: 2022, day: days.at(-1), level: 1 });
+    expect(result).toBe(true);
+  });
+});