def test_statement_initialized_by_assignment_with_some_none():
"""Statement instance fields created by assignment, others have default None."""
shap = Statement()
shap.prop_id = "dcterms:creator"
shap.value_type = "URI"
assert shap == Statement(shape_id=None, prop_id="dcterms:creator", value_type="URI")
assert not shap.shape_id
assert not shap.mand
def test_statement_initialized_by_assignment():
"""Statement instance fields created by assignment."""
shap = Statement(shape_id="@photo", prop_id="dcterms:creator", value_type="URI")
shap2 = Statement()
shap2.shape_id = "@photo"
shap2.prop_id = "dcterms:creator"
shap2.value_type = "URI"
assert shap == shap2
def test_statement_bad_field_initialized_by_assignment():
"""Attempted assignment to bad field raises TypeError."""
shap = Statement()
shap.foobar = "@photo"
shap.prop_id = "dcterms:creator"
shap.value_type = "URI"
with pytest.raises(TypeError):
assert shap == Statement(
foobar="@photo", prop_id="dcterms:creator", value_type="URI"
)