How to use the pyexcel.internal.sheets.Matrix function in pyexcel

def test_iadd_matrix(self):
        """Test in place add a matrix"""
        m5 = Matrix(copy.deepcopy(self.data))
        m6 = Matrix(copy.deepcopy(self.data))
        m7 = m5.column + m6
        result2 = [
            [1, 2, 3, 4, 5, 6, 1, 2, 3, 4, 5, 6],
            [1, 2, 3, 4, "", "", 1, 2, 3, 4, "", ""],
            [1, "", "", "", "", "", 1, "", "", "", "", ""],
        ]
        eq_(result2, m7.get_internal_array())

def test_add(self):
        r3 = Matrix(self.data)
        r3 = r3.row + self.content
        assert r3.row[3] == ["r", "s", "t", "o", ""]
        assert r3.row[4] == [1, 2, 3, 4, ""]
        assert r3.row[5] == [True, "", "", "", ""]
        assert r3.row[6] == [1.1, 2.2, 3.3, 4.4, 5.5]

def test_iadd_matrix(self):
        """Test in place add"""
        r2 = Matrix(self.data)
        r3 = Matrix(self.content)
        r2.row += r3
        assert r2.row[3] == ["r", "s", "t", "o", ""]
        assert r2.row[4] == [1, 2, 3, 4, ""]
        assert r2.row[5] == [True, "", "", "", ""]
        assert r2.row[6] == [1.1, 2.2, 3.3, 4.4, 5.5]

def test_get_with_a_wrong_column_index(self):
        """Get with a wrong index"""
        m = Matrix(self.data)
        m.column[1.11]  # bang, string type index

def test_set_columns(self):
        matrix = Matrix(self.data)
        content = ["r", "s", "t", "o"]
        matrix.column[1] = content
        assert matrix.column[1] == content
        assert matrix.column[0] == [1, 1, 1, ""]
        matrix.column["B"] = ["p", "q", "r"]
        eq_(matrix.column["B"], ["p", "q", "r", "o"])

def test_set_column_at(self):
        r = Matrix(self.data)
        try:
            r.set_column_at(1, [11, 1], 1000)
            assert 1 == 2
        except IndexError:
            assert 1 == 1

def test_extend_columns(self):
        """Test extend columns"""
        m = Matrix(self.data)
        m.extend_columns(self.data3)
        eq_(self.result, m.get_internal_array())

def test_set_a_special_slice(self):
        r = Matrix(self.data)
        content3 = [True, False, True, False]
        r.column[0:0] = content3
        assert r.column[0] == content3

def test_delete_a_slice(self):
        m = Matrix(self.data)
        del m.column[0:2]
        assert m.row[0] == [3, 4, 5, 6]

def test_set_an_invalid_slice(self):
        m = Matrix(self.data)
        try:
            m.column[2:1] = ["e", "r", "r", "o"]
            assert 1 == 2
        except ValueError:
            assert 1 == 1