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Not a good idea to use unpack "H*" to peek at a scalar's internal
[perl5.git] / t / op / join.t
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8d063cd8
LW
1#!./perl
2
21703f85 3print "1..22\n";
8d063cd8
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4
5@x = (1, 2, 3);
6if (join(':',@x) eq '1:2:3') {print "ok 1\n";} else {print "not ok 1\n";}
7
8if (join('',1,2,3) eq '123') {print "ok 2\n";} else {print "not ok 2\n";}
9
10if (join(':',split(/ /,"1 2 3")) eq '1:2:3') {print "ok 3\n";} else {print "not ok 3\n";}
c212fd85
IZ
11
12my $f = 'a';
13$f = join ',', 'b', $f, 'e';
14if ($f eq 'b,a,e') {print "ok 4\n";} else {print "# '$f'\nnot ok 4\n";}
15
16$f = 'a';
17$f = join ',', $f, 'b', 'e';
18if ($f eq 'a,b,e') {print "ok 5\n";} else {print "not ok 5\n";}
19
20$f = 'a';
21$f = join $f, 'b', 'e', 'k';
22if ($f eq 'baeak') {print "ok 6\n";} else {print "# '$f'\nnot ok 6\n";}
1426bbf4
MG
23
24# 7,8 check for multiple read of tied objects
25{ package X;
26 sub TIESCALAR { my $x = 7; bless \$x };
27 sub FETCH { my $y = shift; $$y += 5 };
28 tie my $t, 'X';
29 my $r = join ':', $t, 99, $t, 99;
30 print "# expected '12:99:17:99' got '$r'\nnot " if $r ne '12:99:17:99';
31 print "ok 7\n";
32 $r = join '', $t, 99, $t, 99;
33 print "# expected '22992799' got '$r'\nnot " if $r ne '22992799';
34 print "ok 8\n";
35};
36
37# 9,10 and for multiple read of undef
38{ my $s = 5;
39 local ($^W, $SIG{__WARN__}) = ( 1, sub { $s+=4 } );
40 my $r = join ':', 'a', undef, $s, 'b', undef, $s, 'c';
41 print "# expected 'a::9:b::13:c' got '$r'\nnot " if $r ne 'a::9:b::13:c';
42 print "ok 9\n";
43 my $r = join '', 'a', undef, $s, 'b', undef, $s, 'c';
44 print "# expected 'a17b21c' got '$r'\nnot " if $r ne 'a17b21c';
45 print "ok 10\n";
46};
13e8c8e3
JH
47
48{ my $s = join("", chr(0x1234), chr(0xff));
49 print "not " unless length($s) == 2 && $s eq "\x{1234}\x{ff}";
50 print "ok 11\n";
51}
52
53{ my $s = join(chr(0xff), chr(0x1234), "");
54 print "not " unless length($s) == 2 && $s eq "\x{1234}\x{ff}";
55 print "ok 12\n";
56}
57
58{ my $s = join(chr(0x1234), chr(0xff), chr(0x2345));
59 print "not " unless length($s) == 3 && $s eq "\x{ff}\x{1234}\x{2345}";
60 print "ok 13\n";
61}
62
63{ my $s = join(chr(0xff), chr(0x1234), chr(0xfe));
64 print "not " unless length($s) == 3 && $s eq "\x{1234}\x{ff}\x{fe}";
65 print "ok 14\n";
66}
67
e4803c42
ST
68{ # [perl #24846] $jb2 should be in bytes, not in utf8.
69 my $b = "abc\304";
70 my $u = "abc\x{0100}";
71
72 sub join_into_my_variable {
73 my $r = join("", @_);
74 return $r;
75 }
76
77 my $jb1 = join_into_my_variable("", $b);
78 my $ju1 = join_into_my_variable("", $u);
79 my $jb2 = join_into_my_variable("", $b);
80 my $ju2 = join_into_my_variable("", $u);
81
21703f85
NC
82 {
83 use bytes;
84 print "not " unless $jb1 eq $b;
85 print "ok 15\n";
86 }
87 print "not " unless $jb1 eq $b;
e4803c42
ST
88 print "ok 16\n";
89
21703f85
NC
90 {
91 use bytes;
92 print "not " unless $ju1 eq $u;
93 print "ok 17\n";
94 }
95 print "not " unless $ju1 eq $u;
e4803c42 96 print "ok 18\n";
21703f85
NC
97
98 {
99 use bytes;
100 print "not " unless $jb2 eq $b;
101 print "ok 19\n";
102 }
103 print "not " unless $jb2 eq $b;
104 print "ok 20\n";
105
106 {
107 use bytes;
108 print "not " unless $ju2 eq $u;
109 print "ok 21\n";
110 }
111 print "not " unless $ju2 eq $u;
112 print "ok 22\n";
e4803c42 113}