def test_grd2cpt_unrecognized_data_type():
"""
Test that an error will be raised if an invalid data type is passed to
grid.
"""
with pytest.raises(GMTInvalidInput):
grd2cpt(grid=0)
def test_grd2cpt_output_to_cpt_file(grid):
"""
Save the generated static color palette table to a .cpt file.
"""
with GMTTempFile(suffix=".cpt") as cptfile:
grd2cpt(grid=grid, output=cptfile.name)
assert os.path.getsize(cptfile.name) > 0
def test_grd2cpt(grid):
"""
Test creating a CPT with grd2cpt to create a CPT based off a grid input and
plot it with a color bar.
"""
fig_ref, fig_test = Figure(), Figure()
# Use single-character arguments for the reference image
fig_ref.basemap(B="a", J="W0/15c", R="d")
grd2cpt(grid="@earth_relief_01d")
fig_ref.colorbar(B="a2000")
fig_test.basemap(frame="a", projection="W0/15c", region="d")
grd2cpt(grid=grid)
fig_test.colorbar(frame="a2000")
return fig_ref, fig_test
def test_grd2cpt_categorical_and_cyclic(grid):
"""
Use incorrect setting by setting both categorical and cyclic to True.
"""
with pytest.raises(GMTInvalidInput):
grd2cpt(grid=grid, cmap="batlow", categorical=True, cyclic=True)
def test_grd2cpt_invalid_output(grid):
"""
Use incorrect setting by passing in invalid type to output parameter.
"""
with pytest.raises(GMTInvalidInput):
grd2cpt(grid=grid, output=["some.cpt"])
def test_grd2cpt_blank_output(grid):
"""
Use incorrect setting by passing in blank file name to output parameter.
"""
with pytest.raises(GMTInvalidInput):
grd2cpt(grid=grid, output="")