42 lines
1.2 KiB
JavaScript
42 lines
1.2 KiB
JavaScript
|
"use strict";
|
||
|
|
|
||
|
|
var assert = require("@sinonjs/referee-sinon").assert;
|
||
|
|
var sinon = require("@sinonjs/referee-sinon").sinon;
|
||
|
|
var every = require("./every");
|
||
|
|
|
||
|
|
describe("util/core/every", function() {
|
||
|
|
it("returns true when the callback function returns true for every element in an iterable", function() {
|
||
|
|
var obj = [true, true, true, true];
|
||
|
|
var allTrue = every(obj, function(val) {
|
||
|
|
return val;
|
||
|
|
});
|
||
|
|
|
||
|
|
assert(allTrue);
|
||
|
|
});
|
||
|
|
|
||
|
|
it("returns false when the callback function returns false for any element in an iterable", function() {
|
||
|
|
var obj = [true, true, true, false];
|
||
|
|
var result = every(obj, function(val) {
|
||
|
|
return val;
|
||
|
|
});
|
||
|
|
|
||
|
|
assert.isFalse(result);
|
||
|
|
});
|
||
|
|
|
||
|
|
it("calls the given callback once for each item in an iterable until it returns false", function() {
|
||
|
|
var iterableOne = [true, true, true, true];
|
||
|
|
var iterableTwo = [true, true, false, true];
|
||
|
|
var callback = sinon.spy(function(val) {
|
||
|
|
return val;
|
||
|
|
});
|
||
|
|
|
||
|
|
every(iterableOne, callback);
|
||
|
|
assert.equals(callback.callCount, 4);
|
||
|
|
|
||
|
|
callback.resetHistory();
|
||
|
|
|
||
|
|
every(iterableTwo, callback);
|
||
|
|
assert.equals(callback.callCount, 3);
|
||
|
|
});
|
||
|
|
});
|