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import { argv, getArg, isArgKey } from '../lib/index';
describe('process/argv', () => {
test('isArgKey detects keys', () => {
expect(isArgKey('--foo')).toBe(true);
expect(isArgKey('foo')).toBe(false);
expect(isArgKey('-f')).toBe(false);
});
test('getArg returns absent default when missing', () => {
const res = getArg('--foo', ['--bar', 'x'], { absent: 'nope', present: (v: string) => v });
expect(res.right().get()).toBe('nope');
});
test('getArg errors when missing and no absent default', () => {
const res = getArg('--foo', ['--bar', 'x'], { present: (v: string) => v });
expect(res.left().get().message).toMatch(/arg --foo is not present/);
});
test('getArg reads value from equals form', () => {
const res = getArg('--foo', ['--foo=bar'], { present: (v: string) => v });
expect(res.right().get()).toBe('bar');
});
test('getArg reads value from next token form', () => {
const res = getArg('--foo', ['--foo', 'bar'], { present: (v: string) => v });
expect(res.right().get()).toBe('bar');
});
test('getArg uses unspecified when value missing', () => {
const res = getArg('--foo', ['--foo', '--bar', 'x'], {
unspecified: 'default',
present: (v: string) => v,
});
expect(res.right().get()).toBe('default');
});
test('argv maps multiple args with handlers', () => {
const res = argv(
['--port', '--host'] as const,
{
'--port': {
present: (v: string) => parseInt(v, 10),
},
'--host': {
absent: '127.0.0.1',
present: (v: string) => v,
},
},
['--port', '8080'],
);
expect(res.right().get()).toEqual({ '--port': 8080, '--host': '127.0.0.1' });
});
});
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