def test_SDM_eye():
A = SDM.eye(2, ZZ)
assert A.domain == ZZ
assert A.shape == (2, 2)
assert dict(A) == {0: {0: ZZ(1)}, 1: {1: ZZ(1)}}
def test_DomainMatrix_eye():
A = DomainMatrix.eye(3, QQ)
assert A.rep == SDM.eye((3, 3), QQ)
assert A.shape == (3, 3)
assert A.domain == QQ
