clack/packages/core/test/prompts/multi-select.test.ts at 3d58aad4d8f0c8f84ce0d8a42da005fc17bd106c · hyperz111/clack · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
import { cursor } from 'sisteransi';
import { afterEach, beforeEach, describe, expect, test, vi } from 'vitest';
import { default as MultiSelectPrompt } from '../../src/prompts/multi-select.js';
import { MockReadable } from '../mock-readable.js';
import { MockWritable } from '../mock-writable.js';

describe('MultiSelectPrompt', () => {
	let input: MockReadable;
	let output: MockWritable;

	beforeEach(() => {
		input = new MockReadable();
		output = new MockWritable();
	});

	afterEach(() => {
		vi.restoreAllMocks();
	});

	test('renders render() result', () => {
		const instance = new MultiSelectPrompt({
			input,
			output,
			render: () => 'foo',
			options: [{ value: 'foo' }, { value: 'bar' }],
		});
		instance.prompt();
		expect(output.buffer).to.deep.equal([cursor.hide, 'foo']);
	});

	describe('cursor', () => {
		test('cursor is index of selected item', () => {
			const instance = new MultiSelectPrompt({
				input,
				output,
				render: () => 'foo',
				options: [{ value: 'foo' }, { value: 'bar' }],
			});

			instance.prompt();

			expect(instance.cursor).to.equal(0);
			input.emit('keypress', 'down', { name: 'down' });
			expect(instance.cursor).to.equal(1);
		});

		test('cursor loops around', () => {
			const instance = new MultiSelectPrompt({
				input,
				output,
				render: () => 'foo',
				options: [{ value: 'foo' }, { value: 'bar' }, { value: 'baz' }],
			});

			instance.prompt();

			expect(instance.cursor).to.equal(0);
			input.emit('keypress', 'up', { name: 'up' });
			expect(instance.cursor).to.equal(2);
			input.emit('keypress', 'down', { name: 'down' });
			expect(instance.cursor).to.equal(0);
		});

		test('left behaves as up', () => {
			const instance = new MultiSelectPrompt({
				input,
				output,
				render: () => 'foo',
				options: [{ value: 'foo' }, { value: 'bar' }, { value: 'baz' }],
			});

			instance.prompt();

			input.emit('keypress', 'left', { name: 'left' });
			expect(instance.cursor).to.equal(2);
		});

		test('right behaves as down', () => {
			const instance = new MultiSelectPrompt({
				input,
				output,
				render: () => 'foo',
				options: [{ value: 'foo' }, { value: 'bar' }],
			});

			instance.prompt();

			input.emit('keypress', 'left', { name: 'left' });
			expect(instance.cursor).to.equal(1);
		});

		test('initial values is selected', () => {
			const instance = new MultiSelectPrompt({
				input,
				output,
				render: () => 'foo',
				options: [{ value: 'foo' }, { value: 'bar' }],
				initialValues: ['bar'],
			});
			instance.prompt();
			expect(instance.value).toEqual(['bar']);
		});

		test('select all when press "a" key', () => {
			const instance = new MultiSelectPrompt({
				input,
				output,
				render: () => 'foo',
				options: [{ value: 'foo' }, { value: 'bar' }],
			});
			instance.prompt();

			input.emit('keypress', 'down', { name: 'down' });
			input.emit('keypress', 'space', { name: 'space' });
			input.emit('keypress', 'a', { name: 'a' });
			expect(instance.value).toEqual(['foo', 'bar']);
		});

		test('select invert when press "i" key', () => {
			const instance = new MultiSelectPrompt({
				input,
				output,
				render: () => 'foo',
				options: [{ value: 'foo' }, { value: 'bar' }],
			});
			instance.prompt();

			input.emit('keypress', 'down', { name: 'down' });
			input.emit('keypress', 'space', { name: 'space' });
			input.emit('keypress', 'i', { name: 'i' });
			expect(instance.value).toEqual(['foo']);
		});
	});
});