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'use strict';
var test = require('tape');
var isArguments = require('../');
var hasToStringTag = typeof Symbol === 'function' && typeof Symbol.toStringTag === 'symbol';
test('primitives', function (t) {
t.notOk(isArguments([]), 'array is not arguments');
t.notOk(isArguments({}), 'object is not arguments');
t.notOk(isArguments(''), 'empty string is not arguments');
t.notOk(isArguments('foo'), 'string is not arguments');
t.notOk(isArguments({ length: 2 }), 'naive array-like is not arguments');
t.end();
});
test('arguments object', function (t) {
t.ok(isArguments(arguments), 'arguments is arguments');
t.notOk(isArguments(Array.prototype.slice.call(arguments)), 'sliced arguments is not arguments');
t.end();
});
test('old-style arguments object', function (t) {
var isLegacyArguments = isArguments.isLegacyArguments || isArguments;
var fakeOldArguments = {
callee: function () {},
length: 3
};
t.ok(isLegacyArguments(fakeOldArguments), 'old-style arguments is arguments');
t.end();
});
test('Symbol.toStringTag', { skip: !hasToStringTag }, function (t) {
var obj = {};
obj[Symbol.toStringTag] = 'Arguments';
t.notOk(isArguments(obj), 'object with faked toStringTag is not arguments');
var args = (function () {
return arguments;
}());
args[Symbol.toStringTag] = 'Arguments';
t.notOk(isArguments(obj), 'real arguments with faked toStringTag is not arguments');
t.end();
});
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