def test_select_targets_gives_Nsel_objects_in_output(
self, inputs_for_select_targets, Nsel):
"""
When there are many untiled things in a field, check that our tiles contain NSel galaxies
"""
proximity = 200
tile_members, isels = T.select_targets(**inputs_for_select_targets,
proximity=proximity,
Nsel=Nsel,
selection_type='random',
fill_spares_with_repeats=False)
assert (len(tile_members) == Nsel)
def test_select_targets_raises_error_when_wrong_selection_type(
self, inputs_for_select_targets):
"""
When we add in a selection type which isn't 'random' or 'clashing', check this raises an error
"""
proximity = 200
Nsel = 19
with pytest.raises(NameError):
tile_members, isels = T.select_targets(
**inputs_for_select_targets,
proximity=proximity,
Nsel=Nsel,
selection_type='wrong_value',
fill_spares_with_repeats=False)
def test_select_targets_doesnt_raise_value_error(
self, inputs_for_select_targets):
"""
Make sure that select targets doesn't raise a value error when it checks that our tile doesn't clash with itself
"""
proximity = 200
Nsel = 19
try:
tile_members, isels = T.select_targets(
**inputs_for_select_targets,
proximity=proximity,
Nsel=Nsel,
selection_type='random',
fill_spares_with_repeats=False)
except ValueError:
pytest.fail(
"Value error raised implies our tile clashes with itself!")
def test_fill_with_repeats_being_false_doesnt_add_galaxies_to_fill_tile(
self, inputs_for_select_targets):
"""
When there are fewer than Nsel things left to tile in a field, check that not having the fill_spares_with_repeats flag means that we only return the number of unobserved galaxies for this tile
"""
proximity = 200
Nsel = 19
# Make it so that everything in this field has been observed except one galaxy
targets_df = inputs_for_select_targets['all_targets_df']
targets_df['COMPLETED'] = True
targets_df.loc[targets_df.CATAID == 8706, 'COMPLETED'] = False
priorities = inputs_for_select_targets['priorities']
tile_members, isels = T.select_targets(all_targets_df=targets_df,
priorities=priorities,
proximity=proximity,
Nsel=Nsel,
selection_type='random',
fill_spares_with_repeats=False)
assert len(tile_members) == 1
def test_fill_with_repeats_adds_galaxies_to_fill_tile(
self, inputs_for_select_targets):
"""
When there are fewer than Nsel things left to tile in the field, check that the 'fill_spares_with_repeats' flag does add in spare galaxies to reach Nsel targets
"""
proximity = 200
Nsel = 19
# Make it so that everything in this field has been observed except one galaxy
targets_df = inputs_for_select_targets['all_targets_df']
targets_df['COMPLETED'] = True
targets_df.loc[targets_df.CATAID == 8706, 'COMPLETED'] = False
priorities = inputs_for_select_targets['priorities']
tile_members, isels = T.select_targets(all_targets_df=targets_df,
priorities=priorities,
proximity=proximity,
Nsel=Nsel,
selection_type='random',
fill_spares_with_repeats=True)
assert len(tile_members) == Nsel