def test_Matrix():
assert mathematica_code(Matrix()) == '{}'
m = Matrix([[1, 2], [3, 4444]])
assert mathematica_code(m) == mathematica_code(m.as_immutable()) == '{{1, 2}, {3, 4444}}'
m = SparseMatrix(m)
assert mathematica_code(m) == mathematica_code(m.as_immutable()) == '{{1, 2}, {3, 4444}}'
def test_as_immutable():
X = Matrix([[1, 2], [3, 4]])
assert sympify(X) == X.as_immutable() == ImmutableMatrix([[1, 2], [3, 4]])
X = SparseMatrix(5, 5, {})
assert sympify(X) == X.as_immutable() == ImmutableSparseMatrix(
[[0 for i in range(5)] for i in range(5)])
def test_as_immutable():
X = Matrix([[1, 2], [3, 4]])
assert sympify(X) == X.as_immutable() == ImmutableMatrix([[1, 2], [3, 4]])
X = SparseMatrix(5, 5, {})
assert sympify(X) == X.as_immutable() == ImmutableSparseMatrix(
[[0 for i in range(5)] for i in range(5)])