(function(t) {
    function createInjector(fn, values) {
        return require('injector').create(fn, values);
    }

    var testFn = function(a, b) { return a + b; };
    var injector = createInjector(testFn);
    var extract = injector.extract(testFn);

    t.comment('FunctionArgsInjector.extract()');
    t.assertType(extract, "object", 'FunctionArgsInjector.extract() returns an object');
    t.assertEquals(extract.name, null, 'FunctionArgsInjector.extract() process function name as expected');
    t.assertEquals(extract.body, 'return a + b;', 'FunctionArgsInjector.extract() process function body as expected');
    t.assertEquals(extract.args, ['a', 'b'], 'FunctionArgsInjector.extract() process function args as expected');

    function Plop(foo, bar) {
        return 'foo: ' + foo +', bar: ' + bar;
    }
    function Plip() { return 'plop'; }
    function foo_bar(boz) {}
    var gni = function ($bubu_bibi, __popo__) {};
    var gno = function    (  arg1,    /*plop*/ arg2  ) {    };
    t.assertEquals(injector.extract(Plop), {
        name: 'Plop',
        args: ['foo', 'bar'],
        body: "return 'foo: ' + foo +', bar: ' + bar;"
    }, 'FunctionArgsInjector.extract() handles named functions with arguments and body');
    t.assertEquals(injector.extract(Plip), {
        name: 'Plip',
        args: [],
        body: "return 'plop';"
    }, 'FunctionArgsInjector.extract() handles functions with no arguments');
    t.assertEquals(injector.extract(foo_bar), {
        name: 'foo_bar',
        args: ['boz'],
        body: ""
    }, 'FunctionArgsInjector.extract() handles functions with no body');
    t.assertEquals(injector.extract(gni), {
        name: null,
        args: ['$bubu_bibi', '__popo__'],
        body: ""
    }, 'FunctionArgsInjector.extract() handles anonymous functions with complex args passed');
    t.assertEquals(injector.extract(gno), {
        name: null,
        args: ['arg1', 'arg2'],
        body: ""
    }, 'FunctionArgsInjector.extract() handles can filter comments in function args');

    t.comment('FunctionArgsInjector.process()');
    var processed;
    eval('processed = ' + injector.process({ a: 1, b: 2 }));

    t.assertType(processed, "function", 'FunctionArgsInjector.process() processed a function');
    t.assertEquals(processed(), 3, 'FunctionArgsInjector.process() processed the function correctly');

    t.done();
})(casper.test);