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104 lines
2.6 KiB
JavaScript
104 lines
2.6 KiB
JavaScript
import { RatInAMaze } from '../RatInAMaze'
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describe('RatInAMaze', () => {
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it('should fail for non-arrays', () => {
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const values = [undefined, null, {}, 42, 'hello, world']
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for (const value of values) {
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// we deliberately want to check whether this constructor call fails or not
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expect(() => {
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new RatInAMaze(value)
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}).toThrow()
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}
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})
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it('should fail for an empty array', () => {
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// we deliberately want to check whether this constructor call fails or not
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expect(() => {
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new RatInAMaze([])
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}).toThrow()
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})
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it('should fail for a non-square array', () => {
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const array = [
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[0, 0, 0],
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[0, 0]
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]
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// we deliberately want to check whether this constructor call fails or not
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expect(() => {
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new RatInAMaze(array)
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}).toThrow()
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})
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it('should fail for arrays containing invalid values', () => {
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const values = [[[2]], [['a']]]
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for (const value of values) {
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// we deliberately want to check whether this constructor call fails or not
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expect(() => {
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new RatInAMaze(value)
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}).toThrow()
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}
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})
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it('should work for a single-cell maze', () => {
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const maze = new RatInAMaze([[1]])
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expect(maze.solved).toBe(true)
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expect(maze.path).toBe('')
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})
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it('should work for a single-cell maze that can not be solved', () => {
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const maze = new RatInAMaze([[0]])
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expect(maze.solved).toBe(false)
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expect(maze.path).toBe('')
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})
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it('should work for a simple 3x3 maze', () => {
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const maze = new RatInAMaze([
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[1, 1, 0],
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[0, 1, 0],
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[0, 1, 1]
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])
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expect(maze.solved).toBe(true)
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expect(maze.path).toBe('RDDR')
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})
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it('should work for a simple 2x2 that can not be solved', () => {
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const maze = new RatInAMaze([
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[1, 0],
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[0, 1]
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])
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expect(maze.solved).toBe(false)
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expect(maze.path).toBe('')
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})
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it('should work for a more complex maze', () => {
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const maze = new RatInAMaze([
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[1, 1, 1, 1, 1, 0, 0],
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[0, 0, 0, 0, 1, 0, 0],
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[1, 1, 1, 0, 1, 0, 0],
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[1, 0, 1, 0, 1, 0, 0],
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[1, 0, 1, 1, 1, 0, 0],
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[1, 0, 0, 0, 0, 0, 0],
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[1, 1, 1, 1, 1, 1, 1]
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])
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expect(maze.solved).toBe(true)
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expect(maze.path).toBe('RRRRDDDDLLUULLDDDDRRRRRR')
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})
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it('should work for a more complex maze that can not be solved', () => {
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const maze = new RatInAMaze([
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[1, 1, 1, 1, 1, 0, 1],
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[0, 0, 0, 0, 1, 0, 1],
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[1, 1, 1, 0, 1, 0, 1],
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[1, 0, 1, 0, 1, 0, 1],
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[1, 0, 1, 0, 1, 1, 1],
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[1, 0, 0, 0, 0, 0, 0],
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[1, 1, 1, 1, 1, 1, 1]
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])
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expect(maze.solved).toBe(false)
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expect(maze.path).toBe('')
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})
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})
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