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import test from 'ava';
import onetime from './index.js';
test('call function once', t => {
let i = 0;
const fixture = onetime(() => ++i);
t.is(fixture(), 1);
t.is(fixture(), 1);
t.is(fixture(), 1);
});
test('option to throw is called more than once', t => {
const fixture = onetime(() => {}, {throw: true});
fixture();
t.throws(fixture, {message: /Function .* can only be called once/});
});
test('`callCount` method', t => {
const fixture = onetime(() => {});
t.is(onetime.callCount(fixture), 0);
fixture();
fixture();
fixture();
t.is(onetime.callCount(fixture), 3);
});
test('`callCount` method - throw on non-onetime-wrapped functions', t => {
const fixture = () => {};
t.throws(() => {
onetime.callCount(fixture);
}, {message: /not wrapped/});
});
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