lang.js
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define(["doh/main", "dojo/_base/array", "dojo/_base/lang"], function(doh, array, lang){
doh.register("tests._base.lang", [
function mixin(t){
t.assertEqual("object", typeof lang.mixin());
t.assertEqual("object", typeof lang.mixin(undefined));
t.assertEqual("object", typeof lang.mixin(null));
var src = {
foo: function(){
t.debug("foo");
},
bar: "bar"
};
var dest = {};
lang.mixin(dest, src);
t.assertEqual("function", typeof dest["foo"]);
t.assertEqual("string", typeof dest["bar"]);
},
function extend(t){
var src = {
foo: function(){
t.debug("foo");
},
bar: "bar"
};
function dest(){}
lang.extend(dest, src);
var test = new dest();
t.assertEqual("function", typeof test["foo"]);
t.assertEqual("string", typeof test["bar"]);
},
function isFunction(t){
t.assertTrue(lang.isFunction(new Function()));
t.assertTrue(lang.isFunction(isFunction));
if(lang.isBrowser){ // test the Safari workaround for NodeList
t.assertFalse(lang.isFunction(lang.doc.getElementsByName("html")));
t.assertFalse(lang.isFunction(lang.doc.createElement("object")));
}
},
function isObject(t){
t.assertFalse(lang.isObject(true));
t.assertFalse(lang.isObject(false));
t.assertFalse(lang.isObject("foo"));
t.assertTrue(lang.isObject(new String("foo")));
t.assertTrue(lang.isObject(null));
t.assertTrue(lang.isObject({}));
t.assertTrue(lang.isObject([]));
t.assertTrue(lang.isObject(new Array()));
},
function isArray(t){
t.assertTrue(lang.isArray([]));
t.assertTrue(lang.isArray(new Array()));
t.assertFalse(lang.isArray({}));
},
function isArrayLike(t){
t.assertFalse(lang.isArrayLike("thinger"));
t.assertTrue(lang.isArrayLike(new Array()));
t.assertFalse(lang.isArrayLike({}));
t.assertTrue(lang.isArrayLike(arguments));
},
function isString(t){
t.assertFalse(lang.isString(true));
t.assertFalse(lang.isString(false));
t.assertTrue(lang.isString("foo"));
t.assertTrue(lang.isString(new String("foo")));
t.assertFalse(lang.isString(null));
t.assertFalse(lang.isString({}));
t.assertFalse(lang.isString([]));
},
function partial(t){
var scope = { foo: "bar" };
var scope2 = { foo: "baz" };
function thinger(arg1, arg2){
return [this.foo, arg1, arg2];
}
var st1 = lang.partial(thinger);
t.assertEqual("bar", st1.call(scope)[0]);
t.assertEqual(undefined, st1()[0]);
var st2 = lang.partial(thinger, "foo", "bar");
t.assertEqual("bar", st2()[2]);
var st3 = lang.partial(thinger, "foo", "bar");
},
function nestedPartial(t){
function thinger(arg1, arg2){
return [arg1, arg2];
}
var st1 = lang.partial(thinger, "foo");
t.assertEqual(undefined, st1()[1]);
t.assertEqual("bar", st1("bar")[1]);
// partials can accumulate
var st2 = lang.partial(st1, "thud");
t.assertEqual("foo", st2()[0]);
t.assertEqual("thud", st2()[1]);
},
function hitch(t){
var scope = { foo: "bar" };
var scope2 = { foo: "baz" };
function thinger(){
return [this.foo, arguments.length];
}
var st1 = lang.hitch(scope, thinger);
t.assertEqual("bar", st1()[0]);
t.assertEqual(0, st1()[1]);
var st2 = lang.hitch(scope2, thinger);
t.assertEqual("baz", st2()[0]);
t.assertEqual(0, st1()[1]);
t.assertEqual(1, st1("blah")[1]);
// st2 should be "scope proof"
t.assertEqual("baz", st2.call(scope)[0]);
},
function hitchWithArgs(t){
var scope = { foo: "bar" };
var scope2 = { foo: "baz" };
function thinger(){
return [this.foo, arguments.length];
}
var st1 = lang.hitch(scope, thinger, "foo", "bar");
t.assertEqual("bar", st1()[0]);
t.assertEqual(2, st1()[1]);
var st2 = lang.hitch(scope2, thinger, "foo", "bar");
t.assertEqual("baz", st2()[0]);
t.assertEqual(2, st2()[1]);
},
function hitchAsPartial(t){
var scope = { foo: "bar" };
var scope2 = { foo: "baz" };
function thinger(arg1, arg2){
return [this.foo, arg1, arg2];
}
var st1 = lang.hitch(null, thinger);
t.assertEqual("bar", st1.call(scope)[0]);
t.assertEqual(undefined, st1()[0]);
var st2 = lang.hitch(null, thinger, "foo", "bar");
t.assertEqual("bar", st2()[2]);
var st3 = lang.hitch(null, thinger, "foo", "bar");
},
function _toArray(t){
var obj1 = [ 'foo', 'bar', 'spam', 'ham' ];
function thinger(){
return lang._toArray(arguments);
}
var obj2 = thinger.apply(this, obj1);
t.assertEqual(obj1[0], obj2[0]);
if(lang.isBrowser){
//test DomCollection
var div = document.createElement('div');
div.innerHTML="<a href='#'>link</a>text";
var r=lang._toArray(div.childNodes);
t.is(2,r.length);
}
},
function clone(t){
var obj1 = {
foo: 'bar',
answer: 42,
jan102007: new Date(2007, 0, 10),
baz: {
a: null,
b: [1, "b", 2.3, true, false],
c: {
d: undefined,
e: 99,
f: function(){ console.log(42); return 42; },
g: /\d+/gm
}
},
toString: function(){ return "meow"; }
};
var obj2 = lang.clone(obj1);
t.assertEqual(obj1.foo, obj2.foo);
t.assertEqual(obj1.answer, obj2.answer);
t.assertEqual(obj1.jan102007, obj2.jan102007);
t.assertEqual(obj1.baz.a, obj2.baz.a);
for(var i = 0; i < obj1.baz.b.length; ++i){
t.assertEqual(obj1.baz.b[i], obj2.baz.b[i]);
}
t.assertEqual(obj1.baz.c.d, obj2.baz.c.d);
t.assertEqual(obj1.baz.c.e, obj2.baz.c.e);
t.assertEqual(obj1.baz.c.f, obj2.baz.c.f);
t.assertEqual(obj1.baz.c.f(), obj2.baz.c.f());
t.assertEqual(obj1.baz.c.g, obj2.baz.c.g);
t.assertEqual(obj1.toString, obj2.toString);
t.assertEqual(obj1.toString(), obj2.toString());
},
function delegate(t){
var a = {
x: 1,
y: function(){ return 2; },
z1: 99
};
var b = {
x: 11,
y: function(){ return 12; },
z2: 33,
toString: function(){ return "bark!"; },
toLocaleString: function(){ return "le bark-s!"; }
};
t.is(1, a.x);
t.is(2, a.y());
t.is(99, a.z1);
var c = lang.delegate(a, b);
t.is(1, a.x);
t.is(2, a.y());
t.is(99, a.z1);
t.is(11, c.x);
t.is(12, c.y());
t.is("bark!", c.toString());
t.is("le bark-s!", c.toLocaleString());
t.is(99, c.z1);
t.is(33, c.z2);
},
function replace(t){
var s1 = lang.replace("Hello, {name.first} {name.last} AKA {nick}!",
{
nick: "Bob",
name: {
first: "Robert",
middle: "X",
last: "Cringely"
}
});
t.is("Hello, Robert Cringely AKA Bob!", s1);
var s2 = lang.replace("Hello, {0} {2}!", ["Robert", "X", "Cringely"]);
t.is("Hello, Robert Cringely!", s2);
function sum(a){
var t = 0;
array.forEach(a, function(x){ t += x; });
return t;
}
var s3 = lang.replace(
"{count} payments averaging {avg} USD per payment.",
lang.hitch(
{ payments: [11, 16, 12] },
function(_, key){
switch(key){
case "count": return this.payments.length;
case "min": return Math.min.apply(Math, this.payments);
case "max": return Math.max.apply(Math, this.payments);
case "sum": return sum(this.payments);
case "avg": return sum(this.payments) / this.payments.length;
}
return "";
}
));
t.is("3 payments averaging 13 USD per payment.", s3);
var s4 = lang.replace("Hello, ${0} ${2}!", ["Robert", "X", "Cringely"], /\$\{([^\}]+)\}/g);
t.is("Hello, Robert Cringely!", s4);
}
]
);
});