| project('plusassign') |
| |
| x = [] |
| |
| x += 'a' |
| |
| if x.length() != 1 |
| error('Incorrect append') |
| endif |
| |
| if x[0] != 'a' |
| error('Incorrect append 2.') |
| endif |
| |
| y = x |
| |
| x += 'b' |
| |
| if y.length() != 1 |
| error('Immutability broken.') |
| endif |
| |
| if y[0] != 'a' |
| error('Immutability broken 2.') |
| endif |
| |
| if x.length() != 2 |
| error('Incorrect append 3') |
| endif |
| |
| if x[0] != 'a' |
| error('Incorrect append 4.') |
| endif |
| |
| if x[1] != 'b' |
| error('Incorrect append 5.') |
| endif |
| |
| # Now with evil added: append yourself. |
| |
| x += x |
| |
| if x.length() != 4 |
| error('Incorrect selfappend.') |
| endif |
| |
| # += on strings |
| |
| bra = 'bra' |
| foo = 'A' |
| foo += bra |
| foo += 'cada' |
| foo += bra |
| assert (foo == 'Abracadabra', 'string += failure [@0@]'.format(foo)) |
| assert (bra == 'bra', 'string += modified right argument!') |
| foo += ' ' + foo |
| assert (foo == 'Abracadabra Abracadabra', 'string += failure [@0@]'.format(foo)) |
| |
| # += on ints |
| |
| foo = 5 |
| foo += 6 |
| assert (foo == 11, 'int += failure [@0@]'.format(foo)) |
| bar = 99 |
| foo += bar |
| assert (foo == 110, 'int += failure [@0@]'.format(foo)) |
| assert (bar == 99, 'int += modified right argument"') |
| bar += foo + 1 |
| assert (bar == 210, 'int += failure [@0@]'.format(bar)) |
| assert (foo == 110, 'int += modified right argument"') |
