test.js

/* eslint-disable func-names */
'use strict';

// MODULES //

var tape = require( 'tape' );
var RE_NATIVE_FUNCTION = require( './../lib' );


// TESTS //

tape( 'main export is a regular expression', function test( t ) {
	t.ok( true, __filename );
	t.strictEqual( RE_NATIVE_FUNCTION instanceof RegExp, true, 'main export is a regular expression' );
	t.end();
});

tape( 'the regular expression matches native functions', function test( t ) {
	var values;
	var bool;
	var i;

	values = [
		Date,
		Boolean,
		String,
		Number,
		Function,
		RegExp,
		Number,
		Int8Array,
		Math.sqrt,
		Math.pow
	];
	for ( i = 0; i < values.length; i++ ) {
		bool = RE_NATIVE_FUNCTION.test( values[ i ].toString() );
		t.strictEqual( bool, true, 'returns true for '+values[ i ] );
	}
	t.end();
});

tape( 'the regular expression does not match non-native functions', function test( t ) {
	var values;
	var bool;
	var i;

	values = [
		function () {},
		function noop() {},
		test,
		tape,
		t.strictEqual,
		t.ok,
		t.fail,
		t.pass
	];
	for ( i = 0; i < values.length; i++ ) {
		bool = RE_NATIVE_FUNCTION.test( values[ i ].toString() );
		t.strictEqual( bool, false, 'returns false for '+values[ i ] );
	}
	t.end();
});