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adamyanalunas/jasmine.toBeTypeOf.js

Created October 21, 2012 01:14
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jasmine.js matcher to test type of object
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jasmine.toBeTypeOf.js
jasmine.Matchers.prototype.toBeTypeOf = function(expected) {
var actual, notText, objType;
actual = this.actual;
notText = this.isNot ? 'not ' : '';
objType = actual ? Object.prototype.toString.call(actual) : '';
this.message = function() {
return 'Expected ' + actual + notText + ' to be an array';
}
return objType.toLowerCase() === '[object ' + expected.toLowerCase() + ']';
}
@mattixpet
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I like the idea.

Saves you the trouble of writing e.g. expect(typeof(var)).toEqual('number')

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