Method test_join

numpy/_core/tests/test_defchararray.py:427–437

(self)

        assert_(T[2, 0] == b'123      345 \0')

    def test_join(self):
        # NOTE: list(b'123') == [49, 50, 51]
        #       so that b','.join(b'123') results to an error on Py3
        A0 = self.A().decode('ascii')

        A = np.char.join([',', '#'], A0)
        assert_(issubclass(A.dtype.type, np.str_))
        tgt = np.array([[' ,a,b,c, ', ''],
                        ['1,2,3,4,5', 'M#i#x#e#d#C#a#s#e'],
                        ['1,2,3, ,\t, ,3,4,5, ,\x00, ', 'U#P#P#E#R']])
        assert_array_equal(np.char.join([',', '#'], A0), tgt)

    def test_ljust(self):
        A = self.A()