testData = [
{foo: 'a', bar: 1, baz: true, date: new Date(2010, 0, 1)},
{foo: 'b', bar: 2, baz: false, date: new Date(2010, 5, 15)},
{foo: 'c', bar: -1, baz: null, date: new Date(2010, 9, 31)},
{foo: 'd', bar: NaN, date: new Date(2010, 2, 10, 13, 45, 23)}
]