def test(self):
cube = realistic_3d()
axes = tests.mock.sentinel.axes
plot = Plot2D(cube, axes)
emsg = 'requires a draw method for rendering'
with self.assertRaisesRegexp(NotImplementedError, emsg):
plot(time=0)
def test_bad_cover_multi(self):
emsg = "alias 'wibble' cannot cover a 2d coordinate"
coord = AuxCoord(np.ones(self.cube.shape[1:]), long_name='wibble')
self.cube.add_aux_coord(coord, (1, 2))
plot = Plot2D(self.cube, self.axes)
with self.assertRaisesRegexp(ValueError, emsg):
plot.alias(wibble=1)
def setUp(self):
cube = realistic_3d()
axes = tests.mock.sentinel.axes
self.draw = tests.mock.sentinel.draw
self.patcher = self.patch('cube_browser.Plot2D.draw',
return_value=self.draw)
self.plot = Plot2D(cube, axes)
def test_cover_anonymous_negative(self):
self.cube.remove_coord('grid_latitude')
plot = Plot2D(self.cube, self.axes)
plot.alias(latitude=-2)
self.assertEqual(len(plot._dim_by_alias), 1)
self.assertIn('latitude', plot._dim_by_alias)
self.assertEqual(plot._dim_by_alias['latitude'], 1)
def test_negative_y_dim_greater_than_coord(self):
coords = ('grid_latitude', -1)
plot = Plot2D(self.cube, self.axes, coords=coords)
glat = self.cube.coord('grid_latitude')
expected = (glat, 1)
self.assertIsInstance(plot.coords, tuple)
self.assertEqual(plot.coords, expected)
def test_negative_y_dim_less_than_coord(self):
coords = ('grid_longitude', -2)
plot = Plot2D(self.cube, self.axes, coords=coords)
glon = self.cube.coord('grid_longitude')
expected = (glon, 0)
self.assertIsInstance(plot.coords, tuple)
self.assertEqual(plot.coords, expected)
def test_x_dim_greater_than_coord(self):
coords = (2, 'grid_latitude')
plot = Plot2D(self.cube, self.axes, coords=coords)
glat = self.cube.coord('grid_latitude')
expected = (1, glat)
self.assertIsInstance(plot.coords, tuple)
self.assertEqual(plot.coords, expected)
def test_x_dim_less_than_coord(self):
coords = (1, 'grid_longitude')
plot = Plot2D(self.cube, self.axes, coords=coords)
glon = self.cube.coord('grid_longitude')
expected = (0, glon)
self.assertIsInstance(plot.coords, tuple)
self.assertEqual(plot.coords, expected)
def test_coordinate_multi(self):
coord = AuxCoord(np.ones(self.cube.shape[1:]), long_name='wibble')
self.cube.add_aux_coord(coord, (1, 2))
emsg = "x-axis plot coordinate 'wibble' must be a dimension coordinate"
coords = ('wibble', 'grid_latitude')
with self.assertRaisesRegexp(ValueError, emsg):
Plot2D(self.cube, self.axes, coords=coords)
def test_coordinates(self):
coords = ('grid_longitude', 'grid_latitude')
plot = Plot2D(self.cube, self.axes, coords=coords)
glat = self.cube.coord('grid_latitude')
glon = self.cube.coord('grid_longitude')
expected = (glon, glat)
self.assertIsInstance(plot.coords, tuple)
self.assertEqual(plot.coords, expected)
def test_bad_slider_anonymous(self):
self.cube.remove_coord('time')
self.cube.remove_coord('forecast_period')
plot = Plot2D(self.cube, self.axes)
emsg = ("cube 'air_potential_temperature' has no meta-data "
'for dimension 0')
with self.assertRaisesRegexp(ValueError, emsg):
plot.sliders_axis
def test_aliases(self):
plot = Plot2D(self.cube, self.axes)
expected = {}
aliases = [('wibble', 0), ('wobble', 1), ('bibble', 2)]
for (name, dim) in aliases:
expected[name] = dim
plot.alias(**{name: dim})
self.assertEqual(plot.aliases, expected)
self.assertIsNot(plot.aliases, plot._dim_by_alias)
def test_remove_all(self):
self.cube.remove_coord('grid_latitude')
self.cube.remove_coord('grid_longitude')
plot = Plot2D(self.cube, self.axes)
expected = (2, 1)
args, _ = self.patcher.call_args
self.assertEqual(len(args), 1)
self.assertIsInstance(args[0], tuple)
self.assertEqual(args[0], expected)
def test_no_slider_from_aux(self):
coords = ('grid_longitude', 'grid_latitude')
self.cube.remove_coord('time')
fp = self.cube.coord('forecast_period')
self.cube.remove_coord('forecast_period')
aux = AuxCoord.from_coord(fp)
self.cube.add_aux_coord(aux, 0)
plot = Plot2D(self.cube, self.axes, coords=coords)
self.assertEqual(plot._slider_dim_by_name, {})
def test_default_coords(self):
plot = Plot2D(self.cube, self.axes)
glat = self.cube.coord('grid_latitude')
glon = self.cube.coord('grid_longitude')
expected = (glon, glat)
args, _ = self.patcher.call_args
self.assertEqual(len(args), 1)
self.assertIsInstance(args[0], tuple)
self.assertEqual(args[0], expected)
def test_slider_grid_latitude(self):
coords = ('time', 'grid_longitude')
plot = Plot2D(self.cube, self.axes, coords=coords)
original = self.cube.coord('grid_latitude')
coord = self._tidy(original)
expected = _AxisDefn(dim=1, name='grid_latitude', size=9, coord=coord)
actual = plot.sliders_axis
self.assertEqual(actual, [expected])
self.assertIsNot(actual[0].coord, original)
def test_slider_aux_sort(self):
coords = ('grid_longitude', 'grid_latitude')
self.cube.remove_coord('time')
coord = self.cube.coord('forecast_period').copy()
coord.rename('first')
self.cube.add_aux_coord(coord, 0)
plot = Plot2D(self.cube, self.axes, coords=coords)
expected = dict(first=0)
self.assertEqual(plot._slider_dim_by_name, expected)
def test_alias_known(self):
plot = Plot2D(self.cube, self.axes)
self.assertEqual(len(plot._dim_by_alias), 0)
plot.alias(wibble=0)
self.assertEqual(len(plot._dim_by_alias), 1)
self.assertIn('wibble', plot._dim_by_alias)
self.assertEqual(plot._dim_by_alias['wibble'], 0)
plot.remove_alias('wibble')
self.assertNotIn('wibble', plot._dim_by_alias)
self.assertEqual(len(plot._dim_by_alias), 0)
def test_slider_slice_warning(self):
index = 3
kwargs = dict(grid_longitude=index)
coords = ('time', 'grid_latitude')
plot = Plot2D(self.cube, self.axes, coords=coords)
plot.alias(wibble=2)
wmsg = ("expected to be called with alias 'wibble' for dimension 2, "
"rather than with 'grid_longitude'")
with warnings.catch_warnings():
# Cause all warnings to raise an exception.
warnings.simplefilter('error')
with self.assertRaisesRegexp(UserWarning, wmsg):
plot(**kwargs)
def test_slider_slice(self):
index = 5
kwargs = dict(time=index)
plot = Plot2D(self.cube, self.axes)
result = plot(**kwargs)
self.assertEqual(result, self.draw)
args, _ = self.patcher.call_args
expected = plot.cube[index]
self.assertEqual(args, (expected, ))
self.assertEqual(plot.subcube, expected)
cache = plot.cache
key = tuple(sorted(kwargs.items()))
self.assertEqual(len(cache.keys()), 1)
self.assertIn(key, cache)
self.assertEqual(cache[key], expected)
def test_bad_ndim(self):
cube = self.cube[0, 0]
emsg = 'requires at least a 2d cube, got 1d'
with self.assertRaisesRegexp(ValueError, emsg):
Plot2D(cube, self.axes)
def test_bad_slider(self):
plot = Plot2D(self.cube, self.axes)
emsg = "called with unknown name 'wibble'"
with self.assertRaisesRegexp(ValueError, emsg):
plot(wibble=0)
def test_no_aliases(self):
plot = Plot2D(self.cube, self.axes)
self.assertIsNone(plot.aliases)
def test_coords_under_specified_dimension(self):
emsg = 'requires 2 coordinates, one for each plot axis'
coords = 'time'
with self.assertRaisesRegexp(ValueError, emsg):
Plot2D(self.cube, self.axes, coords=coords)
def test_slider_alias(self):
plot = Plot2D(self.cube, self.axes)
plot.alias(time=0)
expected = _AxisAlias(dim=0, name='time', size=7)
self.assertEqual(plot.sliders_axis, [expected])
def test_slider_aux_forecast_period(self):
coords = ('grid_longitude', 'grid_latitude')
self.cube.remove_coord('time')
plot = Plot2D(self.cube, self.axes, coords=coords)
expected = dict(forecast_period=0)
self.assertEqual(plot._slider_dim_by_name, expected)
def test_coords_over_specified(self):
emsg = 'requires 2 coordinates, one for each plot axis'
coords = ('time', 'grid_latitude', 'grid_longitude')
with self.assertRaisesRegexp(ValueError, emsg):
Plot2D(self.cube, self.axes, coords=coords)
def test_time_and_grid_longitude(self):
coords = ('time', 'grid_longitude')
plot = Plot2D(self.cube, self.axes, coords=coords)
expected = set([0, 2])
self.assertEqual(plot._plot_dims, expected)
def test_dimension_out_of_range_above(self):
emsg = 'y-axis plot dimension for 3d cube out of range'
coords = ('grid_longitude', 3)
with self.assertRaisesRegexp(IndexError, emsg):
Plot2D(self.cube, self.axes, coords=coords)
def test_slider_grid_longitude(self):
coords = ('time', 'grid_latitude')
plot = Plot2D(self.cube, self.axes, coords=coords)
expected = dict(grid_longitude=2)
self.assertEqual(plot._slider_dim_by_name, expected)
