| | 230 | def test_interval(self): |
| | 231 | surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, 500, 500) |
| | 232 | opt = {'axis': {'y': {'interval': 2.5}}} |
| | 233 | ch = pycha.chart.Chart(surface, opt) |
| | 234 | dataset = ( |
| | 235 | ('dataset1', ([0, 1], [1, 4], [2, 10])), |
| | 236 | ) |
| | 237 | ch.addDataset(dataset) |
| | 238 | ch._updateXY() |
| | 239 | ch._updateTicks() |
| | 240 | yticks = ((0.75, 2.5), (0.5, 5.0), |
| | 241 | (0.25, 7.5), (0.0, 10.0)) |
| | 242 | |
| | 243 | self.assertEqual(len(yticks), len(ch.yticks)) |
| | 244 | for i, (pos, label) in enumerate(yticks): |
| | 245 | tick = ch.yticks[i] |
| | 246 | self.assertAlmostEqual(tick[0], pos, 2) |
| | 247 | self.assertAlmostEqual(tick[1], label, 2) |
| | 248 | |
