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test.js
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test.js
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'use strict';
var assume = require('assume');
var unwrap = require('./');
describe('unwrapper', function () {
/*
* Test helper that assumes an Array response
*/
function assumeArray(err, res) {
assume(err).falsey();
assume(res).is.an('array');
}
/*
* Test helper that assumes an Object response
*/
function assumeObject(err, res) {
assume(err).falsey();
assume(res).is.an('object');
}
it('should return a function', function () {
assume(unwrap(function () { })).is.a('function');
});
it('returns an Array of length more than 1', function () {
var unwrapper = unwrap(assumeArray);
unwrapper(undefined, [1, 2, 3]);
});
it('returns the first element of an Array of length 1', function () {
var unwrapper = unwrap(assumeObject);
unwrapper(undefined, [{ hi: true }]);
});
it("returns an Array if it doesn't satisfy the predicate", function () {
var unwrapper = unwrap(assumeArray, function (obj) {
return !obj.hi;
});
unwrapper(undefined, [{ hi: true }]);
});
it('returns the first element if the first element satisfies the predicate', function () {
var unwrapper = unwrap(assumeObject, function (obj) {
return obj.hi;
});
unwrapper(undefined, [{ hi: true }]);
});
});