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import * as cu from '~/lib/utils/common_utils';
const CMD_ENTITY = '⌘';
// Redefine `navigator.platform` because it's unsettable by default in JSDOM.
let platform;
Object.defineProperty(navigator, 'platform', {
configurable: true,
get: () => platform,
set: val => {
platform = val;
},
});
describe('common_utils', () => {
describe('platform leader key helpers', () => {
const CTRL_EVENT = { ctrlKey: true };
const META_EVENT = { metaKey: true };
const BOTH_EVENT = { ctrlKey: true, metaKey: true };
it('should return "ctrl" if navigator.platform is unset', () => {
expect(cu.getPlatformLeaderKey()).toBe('ctrl');
expect(cu.getPlatformLeaderKeyHTML()).toBe('Ctrl');
expect(cu.isPlatformLeaderKey(CTRL_EVENT)).toBe(true);
expect(cu.isPlatformLeaderKey(META_EVENT)).toBe(false);
expect(cu.isPlatformLeaderKey(BOTH_EVENT)).toBe(true);
});
it('should return "meta" on MacOS', () => {
navigator.platform = 'MacIntel';
expect(cu.getPlatformLeaderKey()).toBe('meta');
expect(cu.getPlatformLeaderKeyHTML()).toBe(CMD_ENTITY);
expect(cu.isPlatformLeaderKey(CTRL_EVENT)).toBe(false);
expect(cu.isPlatformLeaderKey(META_EVENT)).toBe(true);
expect(cu.isPlatformLeaderKey(BOTH_EVENT)).toBe(true);
});
it('should return "ctrl" on Linux', () => {
navigator.platform = 'Linux is great';
expect(cu.getPlatformLeaderKey()).toBe('ctrl');
expect(cu.getPlatformLeaderKeyHTML()).toBe('Ctrl');
expect(cu.isPlatformLeaderKey(CTRL_EVENT)).toBe(true);
expect(cu.isPlatformLeaderKey(META_EVENT)).toBe(false);
expect(cu.isPlatformLeaderKey(BOTH_EVENT)).toBe(true);
});
it('should return "ctrl" on Windows', () => {
navigator.platform = 'Win32';
expect(cu.getPlatformLeaderKey()).toBe('ctrl');
expect(cu.getPlatformLeaderKeyHTML()).toBe('Ctrl');
expect(cu.isPlatformLeaderKey(CTRL_EVENT)).toBe(true);
expect(cu.isPlatformLeaderKey(META_EVENT)).toBe(false);
expect(cu.isPlatformLeaderKey(BOTH_EVENT)).toBe(true);
});
});
describe('keystroke', () => {
const CODE_BACKSPACE = 8;
const CODE_TAB = 9;
const CODE_ENTER = 13;
const CODE_SPACE = 32;
const CODE_4 = 52;
const CODE_F = 70;
const CODE_Z = 90;
// Helper function that quickly creates KeyboardEvents
const k = (code, modifiers = '') => ({
keyCode: code,
which: code,
altKey: modifiers.includes('a'),
ctrlKey: modifiers.includes('c'),
metaKey: modifiers.includes('m'),
shiftKey: modifiers.includes('s'),
});
const EV_F = k(CODE_F);
const EV_ALT_F = k(CODE_F, 'a');
const EV_CONTROL_F = k(CODE_F, 'c');
const EV_META_F = k(CODE_F, 'm');
const EV_SHIFT_F = k(CODE_F, 's');
const EV_CONTROL_SHIFT_F = k(CODE_F, 'cs');
const EV_ALL_F = k(CODE_F, 'scma');
const EV_ENTER = k(CODE_ENTER);
const EV_TAB = k(CODE_TAB);
const EV_SPACE = k(CODE_SPACE);
const EV_BACKSPACE = k(CODE_BACKSPACE);
const EV_4 = k(CODE_4);
const EV_$ = k(CODE_4, 's');
const { keystroke } = cu;
it('short-circuits with bad arguments', () => {
expect(keystroke()).toBe(false);
expect(keystroke({})).toBe(false);
});
it('handles keystrokes using key codes', () => {
// Test a letter key with modifiers
expect(keystroke(EV_F, CODE_F)).toBe(true);
expect(keystroke(EV_F, CODE_F, '')).toBe(true);
expect(keystroke(EV_ALT_F, CODE_F, 'a')).toBe(true);
expect(keystroke(EV_CONTROL_F, CODE_F, 'c')).toBe(true);
expect(keystroke(EV_META_F, CODE_F, 'm')).toBe(true);
expect(keystroke(EV_SHIFT_F, CODE_F, 's')).toBe(true);
expect(keystroke(EV_CONTROL_SHIFT_F, CODE_F, 'cs')).toBe(true);
expect(keystroke(EV_ALL_F, CODE_F, 'acms')).toBe(true);
// Test non-letter keys
expect(keystroke(EV_TAB, CODE_TAB)).toBe(true);
expect(keystroke(EV_ENTER, CODE_ENTER)).toBe(true);
expect(keystroke(EV_SPACE, CODE_SPACE)).toBe(true);
expect(keystroke(EV_BACKSPACE, CODE_BACKSPACE)).toBe(true);
// Test a number/symbol key
expect(keystroke(EV_4, CODE_4)).toBe(true);
expect(keystroke(EV_$, CODE_4, 's')).toBe(true);
// Test wrong input
expect(keystroke(EV_F, CODE_Z)).toBe(false);
expect(keystroke(EV_SHIFT_F, CODE_F)).toBe(false);
expect(keystroke(EV_SHIFT_F, CODE_F, 'c')).toBe(false);
});
it('is case-insensitive', () => {
expect(keystroke(EV_ALL_F, CODE_F, 'ACMS')).toBe(true);
});
it('handles bogus inputs', () => {
expect(keystroke(EV_F, 'not a keystroke')).toBe(false);
expect(keystroke(EV_F, null)).toBe(false);
});
it('handles exact modifier keys, in any order', () => {
// Test permutations of modifiers
expect(keystroke(EV_ALL_F, CODE_F, 'acms')).toBe(true);
expect(keystroke(EV_ALL_F, CODE_F, 'smca')).toBe(true);
expect(keystroke(EV_ALL_F, CODE_F, 'csma')).toBe(true);
expect(keystroke(EV_CONTROL_SHIFT_F, CODE_F, 'cs')).toBe(true);
expect(keystroke(EV_CONTROL_SHIFT_F, CODE_F, 'sc')).toBe(true);
// Test wrong modifiers
expect(keystroke(EV_ALL_F, CODE_F, 'smca')).toBe(true);
expect(keystroke(EV_ALL_F, CODE_F)).toBe(false);
expect(keystroke(EV_ALL_F, CODE_F, '')).toBe(false);
expect(keystroke(EV_ALL_F, CODE_F, 'c')).toBe(false);
expect(keystroke(EV_ALL_F, CODE_F, 'ca')).toBe(false);
expect(keystroke(EV_ALL_F, CODE_F, 'ms')).toBe(false);
expect(keystroke(EV_CONTROL_SHIFT_F, CODE_F, 'cs')).toBe(true);
expect(keystroke(EV_CONTROL_SHIFT_F, CODE_F, 'c')).toBe(false);
expect(keystroke(EV_CONTROL_SHIFT_F, CODE_F, 's')).toBe(false);
expect(keystroke(EV_CONTROL_SHIFT_F, CODE_F, 'csa')).toBe(false);
expect(keystroke(EV_CONTROL_SHIFT_F, CODE_F, 'm')).toBe(false);
expect(keystroke(EV_SHIFT_F, CODE_F, 's')).toBe(true);
expect(keystroke(EV_SHIFT_F, CODE_F, 'c')).toBe(false);
expect(keystroke(EV_SHIFT_F, CODE_F, 'csm')).toBe(false);
});
it('handles the platform-dependent leader key', () => {
navigator.platform = 'Win32';
let EV_UNDO = k(CODE_Z, 'c');
let EV_REDO = k(CODE_Z, 'cs');
expect(keystroke(EV_UNDO, CODE_Z, 'l')).toBe(true);
expect(keystroke(EV_UNDO, CODE_Z, 'c')).toBe(true);
expect(keystroke(EV_UNDO, CODE_Z, 'm')).toBe(false);
expect(keystroke(EV_REDO, CODE_Z, 'sl')).toBe(true);
expect(keystroke(EV_REDO, CODE_Z, 'sc')).toBe(true);
expect(keystroke(EV_REDO, CODE_Z, 'sm')).toBe(false);
navigator.platform = 'MacIntel';
EV_UNDO = k(CODE_Z, 'm');
EV_REDO = k(CODE_Z, 'ms');
expect(keystroke(EV_UNDO, CODE_Z, 'l')).toBe(true);
expect(keystroke(EV_UNDO, CODE_Z, 'c')).toBe(false);
expect(keystroke(EV_UNDO, CODE_Z, 'm')).toBe(true);
expect(keystroke(EV_REDO, CODE_Z, 'sl')).toBe(true);
expect(keystroke(EV_REDO, CODE_Z, 'sc')).toBe(false);
expect(keystroke(EV_REDO, CODE_Z, 'sm')).toBe(true);
});
});
});
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