def test_incorrect_spacing(self):
fl = ScalarFormatterLocator(unit=u.m)
fl.spacing = 0.032 * u.m
with pytest.warns(UserWarning,
match=r'Spacing is not a multiple of base spacing'):
fl.format = 'x.xx'
assert_almost_equal(fl.spacing.to_value(u.m), 0.03)
def test_values_unit(self):
# Make sure that the intrinsic unit and format unit are correctly
# taken into account when using the locator
fl = ScalarFormatterLocator(unit=u.cm, format_unit=u.m)
assert_quantity_allclose(fl.locator(850, 2150)[0],
[1000., 1200., 1400., 1600., 1800., 2000.] * u.cm)
fl = ScalarFormatterLocator(unit=u.cm, format_unit=u.m)
fl.format = 'x.x'
assert_quantity_allclose(fl.locator(1, 19)[0], [10] * u.cm)
def test_number(self):
fl = ScalarFormatterLocator(number=7, unit=u.m)
assert fl.values is None
assert fl.number == 7
assert fl.spacing is None
values, spacing = fl.locator(34.3, 55.4)
assert_almost_equal(values.value, np.linspace(36., 54., 10))
values, spacing = fl.locator(34.3, 36.1)
assert_almost_equal(values.value, np.linspace(34.4, 36, 9))
fl.format = 'x'
values, spacing = fl.locator(34.3, 36.1)
assert_almost_equal(values.value, [35., 36.])
def test_number(self):
fl = ScalarFormatterLocator(number=7, unit=u.m)
assert fl.values is None
assert fl.number == 7
assert fl.spacing is None
values, spacing = fl.locator(34.3, 55.4)
assert_almost_equal(values.value, np.linspace(36., 54., 10))
values, spacing = fl.locator(34.3, 36.1)
assert_almost_equal(values.value, np.linspace(34.4, 36, 9))
fl.format = 'x'
values, spacing = fl.locator(34.3, 36.1)
assert_almost_equal(values.value, [35., 36.])
def test_spacing(self):
fl = ScalarFormatterLocator(spacing=3. * u.m)
assert fl.values is None
assert fl.number is None
assert fl.spacing == 3. * u.m
values, spacing = fl.locator(34.3, 55.4)
assert_almost_equal(values.value, [36., 39., 42., 45., 48., 51., 54.])
fl.spacing = 0.5 * u.m
values, spacing = fl.locator(34.3, 36.1)
assert_almost_equal(values.value, [34.5, 35., 35.5, 36.])
with pytest.warns(UserWarning, match=r'Spacing is too small'):
fl.format = 'x'
values, spacing = fl.locator(34.3, 36.1)
assert_almost_equal(values.value, [35., 36.])
def test_spacing(self):
fl = ScalarFormatterLocator(spacing=3. * u.m)
assert fl.values is None
assert fl.number is None
assert fl.spacing == 3. * u.m
values, spacing = fl.locator(34.3, 55.4)
assert_almost_equal(values.value, [36., 39., 42., 45., 48., 51., 54.])
fl.spacing = 0.5 * u.m
values, spacing = fl.locator(34.3, 36.1)
assert_almost_equal(values.value, [34.5, 35., 35.5, 36.])
with pytest.warns(UserWarning, match='Spacing is too small'):
fl.format = 'x'
values, spacing = fl.locator(34.3, 36.1)
assert_almost_equal(values.value, [35., 36.])
def test_invalid_formats(self, format):
fl = ScalarFormatterLocator(number=5, unit=u.m)
with pytest.raises(ValueError) as exc:
fl.format = format
assert exc.value.args[0] == "Invalid format: " + format
def test_incorrect_spacing(self):
fl = ScalarFormatterLocator(unit=u.m)
fl.spacing = 0.032 * u.m
with pytest.warns(UserWarning, match='Spacing is not a multiple of base spacing'):
fl.format = 'x.xx'
assert_almost_equal(fl.spacing.to_value(u.m), 0.03)
def test_invalid_formats(self, format):
fl = ScalarFormatterLocator(number=5, unit=u.m)
with pytest.raises(ValueError) as exc:
fl.format = format
assert exc.value.args[0] == "Invalid format: " + format
