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[perl5.git] / t / op / pack.t
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1#!./perl
2
79072805 3# $RCSfile: pack.t,v $$Revision: 4.1 $$Date: 92/08/07 18:28:11 $
a687059c 4
d4217c7e 5print "1..56\n";
a687059c 6
bbdab043 7$format = "c2 x5 C C x s d i l a6";
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8# Need the expression in here to force ary[5] to be numeric. This avoids
9# test2 failing because ary2 goes str->numeric->str and ary doesn't.
10@ary = (1,-100,127,128,32767,987.654321098 / 100.0,12345,123456,"abcdef");
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11$foo = pack($format,@ary);
12@ary2 = unpack($format,$foo);
13
14print ($#ary == $#ary2 ? "ok 1\n" : "not ok 1\n");
15
16$out1=join(':',@ary);
17$out2=join(':',@ary2);
18print ($out1 eq $out2 ? "ok 2\n" : "not ok 2\n");
19
20print ($foo =~ /def/ ? "ok 3\n" : "not ok 3\n");
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21
22# How about counting bits?
23
24print +($x = unpack("%32B*", "\001\002\004\010\020\040\100\200\377")) == 16
25 ? "ok 4\n" : "not ok 4 $x\n";
26
27print +($x = unpack("%32b69", "\001\002\004\010\020\040\100\200\017")) == 12
28 ? "ok 5\n" : "not ok 5 $x\n";
29
30print +($x = unpack("%32B69", "\001\002\004\010\020\040\100\200\017")) == 9
31 ? "ok 6\n" : "not ok 6 $x\n";
32
33print +($x = unpack("%32B*", "Now is the time for all good blurfl")) == 129
34 ? "ok 7\n" : "not ok 7 $x\n";
35
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36open(BIN, "./perl") || open(BIN, "./perl.exe")
37 || die "Can't open ../perl or ../perl.exe: $!\n";
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38sysread BIN, $foo, 8192;
39close BIN;
40
41$sum = unpack("%32b*", $foo);
42$longway = unpack("b*", $foo);
43print $sum == $longway =~ tr/1/1/ ? "ok 8\n" : "not ok 8\n";
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44
45print +($x = unpack("I",pack("I", 0xFFFFFFFF))) == 0xFFFFFFFF
46 ? "ok 9\n" : "not ok 9 $x\n";
def98dd4
UP
47
48# check 'w'
49my $test=10;
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50my @x = (5,130,256,560,32000,3097152,268435455,1073741844,
51 '4503599627365785','23728385234614992549757750638446');
def98dd4 52my $x = pack('w*', @x);
55497cff 53my $y = pack 'H*', '0581028200843081fa0081bd8440ffffff7f848080801487ffffffffffdb19caefe8e1eeeea0c2e1e3e8ede1ee6e';
def98dd4
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54
55print $x eq $y ? "ok $test\n" : "not ok $test\n"; $test++;
56
57@y = unpack('w*', $y);
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58my $a;
59while ($a = pop @x) {
60 my $b = pop @y;
61 print $a eq $b ? "ok $test\n" : "not ok $test\n$a\n$b\n"; $test++;
62}
def98dd4
UP
63
64@y = unpack('w2', $x);
65
66print scalar(@y) == 2 ? "ok $test\n" : "not ok $test\n"; $test++;
67print $y[1] == 130 ? "ok $test\n" : "not ok $test\n"; $test++;
68
55497cff 69# test exeptions
def98dd4
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70eval { $x = unpack 'w', pack 'C*', 0xff, 0xff};
71print $@ ne '' ? "ok $test\n" : "not ok $test\n"; $test++;
72
73eval { $x = unpack 'w', pack 'C*', 0xff, 0xff, 0xff, 0xff};
74print $@ ne '' ? "ok $test\n" : "not ok $test\n"; $test++;
75
76eval { $x = unpack 'w', pack 'C*', 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
77print $@ ne '' ? "ok $test\n" : "not ok $test\n"; $test++;
78
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79#
80# test the "p" template
81
82# literals
83print((unpack("p",pack("p","foo")) eq "foo" ? "ok " : "not ok "),$test++,"\n");
84
85# scalars
86print((unpack("p",pack("p",$test)) == $test ? "ok " : "not ok "),$test++,"\n");
87
88# temps
89sub foo { my $a = "a"; return $a . $a++ . $a++ }
90{
91 local $^W = 1;
92 my $last = $test;
93 local $SIG{__WARN__} = sub {
94 print "ok ",$test++,"\n" if $_[0] =~ /temporary val/
95 };
96 my $junk = pack("p", &foo);
97 print "not ok ", $test++, "\n" if $last == $test;
98}
99
100# undef should give null pointer
101print((pack("p", undef) =~ /^\0+/ ? "ok " : "not ok "),$test++,"\n");
102
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103# Check for optimizer bug (e.g. Digital Unix GEM cc with -O4 on DU V4.0B gives
104# 4294967295 instead of -1)
105# see #ifdef __osf__ in pp.c pp_unpack
106# Test 30:
107print( ((unpack("i",pack("i",-1))) == -1 ? "ok " : "not ok "),$test++,"\n");
108
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109# 31..36: test the pack lengths of s S i I l L
110print "not " unless length(pack("s", 0)) == 2;
111print "ok ", $test++, "\n";
112
113print "not " unless length(pack("S", 0)) == 2;
114print "ok ", $test++, "\n";
115
116print "not " unless length(pack("i", 0)) >= 4;
117print "ok ", $test++, "\n";
118
119print "not " unless length(pack("I", 0)) >= 4;
120print "ok ", $test++, "\n";
121
122print "not " unless length(pack("l", 0)) == 4;
123print "ok ", $test++, "\n";
124
125print "not " unless length(pack("L", 0)) == 4;
126print "ok ", $test++, "\n";
127
128# 37..40: test the pack lengths of n N v V
129
130print "not " unless length(pack("n", 0)) == 2;
131print "ok ", $test++, "\n";
132
133print "not " unless length(pack("N", 0)) == 4;
134print "ok ", $test++, "\n";
135
136print "not " unless length(pack("v", 0)) == 2;
137print "ok ", $test++, "\n";
138
139print "not " unless length(pack("V", 0)) == 4;
140print "ok ", $test++, "\n";
141
142# 41..56: test unpack-pack lengths
143
144my @templates = qw(c C i I s S l L n N v V f d);
145
146# quads not supported everywhere: if not, retest floats/doubles
147# to preserve the test count...
148eval { my $q = pack("q",0) };
149push @templates, $@ !~ /Invalid type in pack/ ? qw(q Q) : qw(f d);
150
151foreach my $t (@templates) {
152 my @t = unpack("$t*", pack("$t*", 12, 34));
153 print "not "
154 unless @t == 2 and (($t[0] == 12 and $t[1] == 34) or ($t =~ /[nv]/i));
155 print "ok ", $test++, "\n";
156}