Commit | Line | Data |
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c963b151 BD |
1 | #!./perl |
2 | ||
3 | # Test // and friends. | |
4 | ||
5 | BEGIN { | |
6 | chdir 't' if -d 't'; | |
7 | @INC = '../lib'; | |
8 | } | |
9 | ||
10 | package main; | |
11 | require './test.pl'; | |
12 | ||
6f33ba73 | 13 | plan( tests => 25 ); |
c963b151 BD |
14 | |
15 | my($x); | |
16 | ||
17 | $x=1; | |
18 | is($x // 0, 1, ' // : left-hand operand defined'); | |
19 | ||
20 | $x = undef; | |
21 | is($x // 1, 1, ' // : left-hand operand undef'); | |
22 | ||
23 | $x=''; | |
24 | is($x // 0, '', ' // : left-hand operand defined but empty'); | |
25 | ||
26 | $x=1; | |
27 | is(($x err 0), 1, ' err: left-hand operand defined'); | |
28 | ||
29 | $x = undef; | |
30 | is(($x err 1), 1, ' err: left-hand operand undef'); | |
31 | ||
32 | $x=''; | |
33 | is(($x err 0), '', ' err: left-hand operand defined but empty'); | |
34 | ||
35 | $x=undef; | |
36 | $x //= 1; | |
37 | is($x, 1, ' //=: left-hand operand undefined'); | |
38 | ||
39 | $x //= 0; | |
40 | is($x, 1, ' //=: left-hand operand defined'); | |
41 | ||
42 | $x = ''; | |
43 | $x //= 0; | |
44 | is($x, '', ' //=: left-hand operand defined but empty'); | |
6f33ba73 RGS |
45 | |
46 | @ARGV = (undef, 0, 3); | |
47 | is(shift // 7, 7, 'shift // ... works'); | |
48 | is(shift() // 7, 0, 'shift() // ... works'); | |
49 | is(shift @ARGV // 7, 3, 'shift @array // ... works'); | |
50 | ||
51 | @ARGV = (3, 0, undef); | |
52 | is(pop // 7, 7, 'pop // ... works'); | |
53 | is(pop() // 7, 0, 'pop() // ... works'); | |
54 | is(pop @ARGV // 7, 3, 'pop @array // ... works'); | |
55 | ||
56 | # Test that various syntaxes are allowed | |
57 | ||
58 | for (qw(getc pos readline readlink undef umask <> <FOO> <$foo> -f)) { | |
59 | eval "sub { $_ // 0 }"; | |
60 | is($@, '', "$_ // ... compiles"); | |
61 | } |