Commit | Line | Data |
c963b151 |
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 | |
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13 | plan( tests => 41 ); |
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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 | |
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26 | like([] // 0, qr/^ARRAY/, ' // : left-hand operand a referece'); |
27 | |
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28 | $x=1; |
29 | is(($x err 0), 1, ' err: left-hand operand defined'); |
30 | |
31 | $x = undef; |
32 | is(($x err 1), 1, ' err: left-hand operand undef'); |
33 | |
34 | $x=''; |
35 | is(($x err 0), '', ' err: left-hand operand defined but empty'); |
36 | |
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37 | like(([] err 0), qr/^ARRAY/, ' err: left-hand operand a referece'); |
38 | |
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39 | $x=undef; |
40 | $x //= 1; |
41 | is($x, 1, ' //=: left-hand operand undefined'); |
42 | |
43 | $x //= 0; |
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44 | is($x, 1, '//=: left-hand operand defined'); |
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45 | |
46 | $x = ''; |
47 | $x //= 0; |
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48 | is($x, '', '//=: left-hand operand defined but empty'); |
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49 | |
50 | @ARGV = (undef, 0, 3); |
51 | is(shift // 7, 7, 'shift // ... works'); |
52 | is(shift() // 7, 0, 'shift() // ... works'); |
53 | is(shift @ARGV // 7, 3, 'shift @array // ... works'); |
54 | |
55 | @ARGV = (3, 0, undef); |
56 | is(pop // 7, 7, 'pop // ... works'); |
57 | is(pop() // 7, 0, 'pop() // ... works'); |
58 | is(pop @ARGV // 7, 3, 'pop @array // ... works'); |
59 | |
60 | # Test that various syntaxes are allowed |
61 | |
62 | for (qw(getc pos readline readlink undef umask <> <FOO> <$foo> -f)) { |
63 | eval "sub { $_ // 0 }"; |
64 | is($@, '', "$_ // ... compiles"); |
65 | } |
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66 | |
67 | # Test for some ambiguous syntaxes |
68 | |
69 | eval q# sub f ($) { } f $x / 2; #; |
70 | is( $@, '' ); |
71 | eval q# sub f ($):lvalue { $y } f $x /= 2; #; |
72 | is( $@, '' ); |
73 | eval q# sub f ($) { } f $x /2; #; |
74 | like( $@, qr/^Search pattern not terminated/ ); |
75 | eval q# sub { print $fh / 2 } #; |
76 | is( $@, '' ); |
77 | eval q# sub { print $fh /2 } #; |
78 | like( $@, qr/^Search pattern not terminated/ ); |
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79 | |
80 | # [perl #28123] Perl optimizes // away incorrectly |
81 | |
82 | is(0 // 2, 0, ' // : left-hand operand not optimized away'); |
83 | is('' // 2, '', ' // : left-hand operand not optimized away'); |
84 | is(undef // 2, 2, ' // : left-hand operand optimized away'); |
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85 | |
86 | # [perl #32347] err should be a weak keyword |
87 | |
88 | package weakerr; |
89 | |
90 | sub err { "<@_>" } |
91 | ::is( (shift() err 42), 42, 'err as an operator' ); |
92 | ::is( (shift err 42), 42, 'err as an operator, with ambiguity' ); |
93 | ::is( (err 2), "<2>", 'err as a function without parens' ); |
94 | ::is( err(2, 3), "<2 3>", 'err as a function with parens' ); |
95 | ::is( err(), "<>", 'err as a function without arguments' ); |
96 | ::is( err, "<>", 'err as a function without parens' ); |