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command.alias.test.js
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command.alias.test.js
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const commander = require('../');
// Running alias commands is tested in command.executableSubcommand.lookup.test.js
// Test various other behaviours for .alias
test('when command has alias then appears in help', () => {
const program = new commander.Command();
program
.command('info [thing]')
.alias('i');
const helpInformation = program.helpInformation();
expect(helpInformation).toMatch('info|i');
});
test('when command has aliases added separately then only first appears in help', () => {
const program = new commander.Command();
program
.command('list [thing]')
.alias('ls')
.alias('dir');
const helpInformation = program.helpInformation();
expect(helpInformation).toMatch('list|ls ');
});
test('when command has aliases then only first appears in help', () => {
const program = new commander.Command();
program
.command('list [thing]')
.aliases(['ls', 'dir']);
const helpInformation = program.helpInformation();
expect(helpInformation).toMatch('list|ls ');
});
test('when command name = alias then error', () => {
const program = new commander.Command();
expect(() => {
program
.command('fail')
.alias('fail');
}).toThrow("Command alias can't be the same as its name");
});
test('when use alias then action handler called', () => {
const program = new commander.Command();
const actionMock = jest.fn();
program
.command('list')
.alias('ls')
.action(actionMock);
program.parse(['ls'], { from: 'user' });
expect(actionMock).toHaveBeenCalled();
});
test('when use second alias added separately then action handler called', () => {
const program = new commander.Command();
const actionMock = jest.fn();
program
.command('list')
.alias('ls')
.alias('dir')
.action(actionMock);
program.parse(['dir'], { from: 'user' });
expect(actionMock).toHaveBeenCalled();
});
test('when use second of aliases then action handler called', () => {
const program = new commander.Command();
const actionMock = jest.fn();
program
.command('list')
.aliases(['ls', 'dir'])
.action(actionMock);
program.parse(['dir'], { from: 'user' });
expect(actionMock).toHaveBeenCalled();
});
test('when set alias then can get alias', () => {
const program = new commander.Command();
const alias = 'abcde';
program.alias(alias);
expect(program.alias()).toEqual(alias);
});
test('when set aliases then can get aliases', () => {
const program = new commander.Command();
const aliases = ['a', 'b'];
program.aliases(aliases);
expect(program.aliases()).toEqual(aliases);
});