test(".data should not miss data-* w/ hyphenated property names #14047", function() {

  expect(2);

  var div = jQuery("<div>");

  div.data({ "foo-bar": 1 });
  div.data( "foo-bar", 2 );

  equal( div.data( "foo-bar" ), 2, "data with property 'foo-bar' was correctly found");
  equal( div.data( "fooBar" ), 2, "data with property 'fooBar' was correctly found");
});

This test fails the first assertion.