46 lines
1.0 KiB
JavaScript
46 lines
1.0 KiB
JavaScript
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describe('one-time', function () {
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'use strict';
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var assume = require('assume')
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, one = require('./');
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it('is exported as a function', function () {
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assume(one).is.a('function');
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});
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it('only calls the supplied function once', function (next) {
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next = one(next);
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next();
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next();
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next();
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next();
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});
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it('returns the same value as the called function every single time', function () {
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var foo = one(function () {
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return 'bar';
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});
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assume(foo()).equals('bar');
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assume(foo()).equals('bar');
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assume(foo()).equals('bar');
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assume(foo()).equals('bar');
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assume(foo()).equals('bar');
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assume(foo()).equals('bar');
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assume(foo()).equals('bar');
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assume(foo()).equals('bar');
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assume(foo()).equals('bar');
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assume(foo()).equals('bar');
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assume(foo()).equals('bar');
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});
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it('the returned function uses the same displayName as the given fn', function () {
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var foo = one(function banana() {
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return 'bar';
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});
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assume(foo.displayName).equals('banana');
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});
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});
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