DefaultCategoryDataset dataset = new DefaultCategoryDataset();
dataset.addValue(1.0, "R1", "C1");
dataset.addValue(2.0, "R2", "C2");
dataset.addValue(3.0, "R&", "C&");
assertEquals("index.html?series=R1&category=C1",
g1.generateURL(dataset, 0, 0));
assertEquals("index.html?series=R1&category=C2",
g1.generateURL(dataset, 0, 1));
assertEquals("index.html?series=R2&category=C2",
g1.generateURL(dataset, 1, 1));
assertEquals("index.html?series=R%26&category=C%26",