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85 lines
3.6 KiB
JavaScript
85 lines
3.6 KiB
JavaScript
// test boolean utils
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var assert = require('assert');
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var approx = require('../../tools/approx');
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var customs = require('../../lib/utils/customs');
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var math = require('../../index');
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describe ('customs', function () {
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describe ('isSafeMethod', function() {
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it ('plain objects', function () {
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var object = {
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fn: function () {}
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}
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assert.equal(customs.isSafeMethod(object, 'fn'), true);
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assert.equal(customs.isSafeMethod(object, 'toString'), true);
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assert.equal(customs.isSafeMethod(object, 'toLocaleString'), true);
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assert.equal(customs.isSafeMethod(object, 'valueOf'), true);
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assert.equal(customs.isSafeMethod(object, 'constructor'), false);
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assert.equal(customs.isSafeMethod(object, 'hasOwnProperty'), false);
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assert.equal(customs.isSafeMethod(object, 'isPrototypeOf'), false);
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assert.equal(customs.isSafeMethod(object, 'propertyIsEnumerable'), false);
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assert.equal(customs.isSafeMethod(object, '__defineGetter__'), false);
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assert.equal(customs.isSafeMethod(object, '__defineSetter__'), false);
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assert.equal(customs.isSafeMethod(object, '__lookupGetter__'), false);
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assert.equal(customs.isSafeMethod(object, '__lookupSetter__'), false);
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// non existing method
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assert.equal(customs.isSafeMethod(object, 'foo'), false);
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});
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it ('function objects', function () {
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var f = function () {};
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assert.equal(customs.isSafeMethod(f, 'call'), false);
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assert.equal(customs.isSafeMethod(f, 'bind'), false);
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});
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it ('classes', function () {
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var matrix = math.matrix();
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assert.equal(customs.isSafeMethod(matrix, 'get'), true);
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assert.equal(customs.isSafeMethod(matrix, 'toString'), true);
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var complex = math.complex();
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assert.equal(customs.isSafeMethod(complex, 'sqrt'), true);
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assert.equal(customs.isSafeMethod(complex, 'toString'), true);
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var unit = math.unit('5cm');
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assert.equal(customs.isSafeMethod(unit, 'toNumeric'), true);
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assert.equal(customs.isSafeMethod(unit, 'toString'), true);
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// extend the class instance with an overridden method
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matrix.myFunction = function () {};
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assert.equal(customs.isSafeMethod(matrix, 'myFunction'), false);
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// unsafe native methods
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assert.equal(customs.isSafeMethod(matrix, 'constructor'), false);
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assert.equal(customs.isSafeMethod(matrix, 'hasOwnProperty'), false);
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assert.equal(customs.isSafeMethod(matrix, 'isPrototypeOf'), false);
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assert.equal(customs.isSafeMethod(matrix, 'propertyIsEnumerable'), false);
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assert.equal(customs.isSafeMethod(matrix, '__defineGetter__'), false);
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assert.equal(customs.isSafeMethod(matrix, '__defineSetter__'), false);
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assert.equal(customs.isSafeMethod(matrix, '__lookupGetter__'), false);
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assert.equal(customs.isSafeMethod(matrix, '__lookupSetter__'), false);
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// non existing method
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assert.equal(customs.isSafeMethod(matrix, 'nonExistingMethod'), false);
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});
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});
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it ('should distinguish plain objects', function () {
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var a = {};
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var b = Object.create(a);
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assert.equal(customs.isPlainObject (a), true);
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assert.equal(customs.isPlainObject (b), true);
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assert.equal(customs.isPlainObject (math.unit('5cm')), false);
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assert.equal(customs.isPlainObject (math.unit('5cm')), false);
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assert.equal(customs.isPlainObject ([]), false);
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// assert.equal(customs.isPlainObject (math.complex()), false); // FIXME: shouldn't treat Complex as a plain object (it is a plain object which has __proto__ overridden)
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assert.equal(customs.isPlainObject (math.matrix()), false);
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});
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}); |