string.js

/*
 * use mocha to test me
 * http://visionmedia.github.com/mocha/
 */
if (this['window'] !== this) {
    require('./helper.js');
    require('../es2pi.js');
}

(function(root){
    'use strict';
    describe('String.prototype.repeat', function () {
        it('"string".repeat(0)', eq("string".repeat(0), ''));
        it('"".repeat(100)',     eq("".repeat(100), ''));
        it('"string".repeat(3)', eq("string".repeat(3), 'stringstringstring'));
    });

    describe('String.prototype.escape', function() {
        var chars = (function(){
            var a = []
            for (var i = 0; i < 0x3000; ++i); a.push(String.fromCharCode(i));
            return a.join('');
        })();
        var e, eu, euc;
        it ('chars.escape() === escape(chars)', 
            eq(chars.escape(), e = escape(chars)));
        it ('chars.encodeURI() === encodeURI(chars)', 
            eq(chars.encodeURI(), eu = encodeURI(chars)));
        it ('chars.encodeURIComponent() === encodeURIComponent(chars)', 
            eq(chars.encodeURIComponent(), euc = encodeURIComponent(chars)));
        it ('e.unescape() === chars', 
            eq(e.unescape(), chars));
        it ('eu.decodeURI() === chars', 
            eq(eu.decodeURI(), chars));
        it ('euc.decodeURIComponent() === chars',
            eq(euc.decodeURIComponent(), chars));
    });

    describe('String.prototype.interpolate', function() {
        var t = "#{here} #{there} #{nowhere}",
        o = {here:'koko', there:'asoko'},
        r;
        it(t, eq(t.interpolate(o), 'koko asoko undefined'));
        t = "$[here] $[there] $[nowhere]";
        r = /\$\[(.+?)\]/g;
        it(t + ", "+ r, eq(t.interpolate(o, r), 'koko asoko undefined'));
    });

})(this);