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describe('utils', function() {
describe('#SafeString', function() {
it('constructing a safestring from a string and checking its type', function() {
var safe = new Handlebars.SafeString('testing 1, 2, 3');
if (!(safe instanceof Handlebars.SafeString)) {
throw new Error('Must be instance of SafeString');
}
equals(safe.toString(), 'testing 1, 2, 3', 'SafeString is equivalent to its underlying string');
});
it('it should not escape SafeString properties', function() {
var name = new Handlebars.SafeString('<em>Sean O'Malley</em>');
shouldCompileTo('{{name}}', [{name: name}], '<em>Sean O'Malley</em>');
});
});
describe('#escapeExpression', function() {
it('shouhld escape html', function() {
equals(Handlebars.Utils.escapeExpression('foo<&"\'>'), 'foo<&"'>');
});
it('should not escape SafeString', function() {
var string = new Handlebars.SafeString('foo<&"\'>');
equals(Handlebars.Utils.escapeExpression(string), 'foo<&"\'>');
var obj = {
toHTML: function() {
return 'foo<&"\'>';
}
};
equals(Handlebars.Utils.escapeExpression(obj), 'foo<&"\'>');
});
it('should handle falsy', function() {
equals(Handlebars.Utils.escapeExpression(''), '');
equals(Handlebars.Utils.escapeExpression(undefined), '');
equals(Handlebars.Utils.escapeExpression(null), '');
equals(Handlebars.Utils.escapeExpression(false), 'false');
equals(Handlebars.Utils.escapeExpression(0), '0');
});
it('should handle empty objects', function() {
equals(Handlebars.Utils.escapeExpression({}), {}.toString());
equals(Handlebars.Utils.escapeExpression([]), [].toString());
});
});
describe('#isEmpty', function() {
it('should not be empty', function() {
equals(Handlebars.Utils.isEmpty(undefined), true);
equals(Handlebars.Utils.isEmpty(null), true);
equals(Handlebars.Utils.isEmpty(false), true);
equals(Handlebars.Utils.isEmpty(''), true);
equals(Handlebars.Utils.isEmpty([]), true);
});
it('should be empty', function() {
equals(Handlebars.Utils.isEmpty(0), false);
equals(Handlebars.Utils.isEmpty([1]), false);
equals(Handlebars.Utils.isEmpty('foo'), false);
equals(Handlebars.Utils.isEmpty({bar: 1}), false);
});
});
describe('#extend', function() {
it('should ignore prototype values', function() {
function A() {
this.a = 1;
}
A.prototype.b = 4;
var b = {b: 2};
Handlebars.Utils.extend(b, new A());
equals(b.a, 1);
equals(b.b, 2);
});
});
});
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