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Data::Dumper patch
[perl5.git] / t / op / range.t
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1#!./perl
2
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3BEGIN {
4 chdir 't' if -d 't';
4e086238 5 @INC = ('../lib', '.');
4fe3f0fa 6}
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7# Avoid using eq_array below as it uses .. internally.
8require 'test.pl';
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9
10use Config;
11
a2309040 12plan (115);
a687059c 13
4e086238 14is(join(':',1..5), '1:2:3:4:5');
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15
16@foo = (1,2,3,4,5,6,7,8,9);
17@foo[2..4] = ('c','d','e');
18
4e086238 19is(join(':',@foo[$foo[0]..5]), '2:c:d:e:6');
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20
21@bar[2..4] = ('c','d','e');
4e086238 22is(join(':',@bar[1..5]), ':c:d:e:');
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23
24($a,@bcd[0..2],$e) = ('a','b','c','d','e');
4e086238 25is(join(':',$a,@bcd[0..2],$e), 'a:b:c:d:e');
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26
27$x = 0;
28for (1..100) {
29 $x += $_;
30}
4e086238 31is($x, 5050);
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32
33$x = 0;
34for ((100,2..99,1)) {
35 $x += $_;
36}
4e086238 37is($x, 5050);
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38
39$x = join('','a'..'z');
4e086238 40is($x, 'abcdefghijklmnopqrstuvwxyz');
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41
42@x = 'A'..'ZZ';
4e086238 43is (scalar @x, 27 * 26);
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44
45@x = '09' .. '08'; # should produce '09', '10',... '99' (strange but true)
4e086238 46is(join(",", @x), join(",", map {sprintf "%02d",$_} 9..99));
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47
48# same test with foreach (which is a separate implementation)
49@y = ();
50foreach ('09'..'08') {
51 push(@y, $_);
52}
4e086238 53is(join(",", @y), join(",", @x));
89ea2908 54
c1ab3db2 55# check bounds
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56if ($Config{ivsize} == 8) {
57 @a = eval "0x7ffffffffffffffe..0x7fffffffffffffff";
58 $a = "9223372036854775806 9223372036854775807";
59 @b = eval "-0x7fffffffffffffff..-0x7ffffffffffffffe";
60 $b = "-9223372036854775807 -9223372036854775806";
61}
62else {
63 @a = eval "0x7ffffffe..0x7fffffff";
64 $a = "2147483646 2147483647";
65 @b = eval "-0x7fffffff..-0x7ffffffe";
66 $b = "-2147483647 -2147483646";
67}
68
4e086238 69is ("@a", $a);
c1ab3db2 70
4e086238 71is ("@b", $b);
c1ab3db2 72
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73# check magic
74{
75 my $bad = 0;
76 local $SIG{'__WARN__'} = sub { $bad = 1 };
77 my $x = 'a-e';
78 $x =~ s/(\w)-(\w)/join ':', $1 .. $2/e;
4e086238 79 is ($x, 'a:b:c:d:e');
86cb7173 80}
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81
82# Should use magical autoinc only when both are strings
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83{
84 my $scalar = (() = "0"..-1);
85 is ($scalar, 0);
86}
87{
88 my $fail = 0;
89 for my $x ("0"..-1) {
90 $fail++;
91 }
92 is ($fail, 0);
39eb4040 93}
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94
95# [#18165] Should allow "-4".."0", broken by #4730. (AMS 20021031)
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96is(join(":","-4".."0") , "-4:-3:-2:-1:0");
97is(join(":","-4".."-0") , "-4:-3:-2:-1:0");
98is(join(":","-4\n".."0\n") , "-4:-3:-2:-1:0");
99is(join(":","-4\n".."-0\n"), "-4:-3:-2:-1:0");
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100
101# undef should be treated as 0 for numerical range
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102is(join(":",undef..2), '0:1:2');
103is(join(":",-2..undef), '-2:-1:0');
104is(join(":",undef..'2'), '0:1:2');
105is(join(":",'-2'..undef), '-2:-1:0');
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106
107# undef should be treated as "" for magical range
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108is(join(":", map "[$_]", "".."B"), '[]');
109is(join(":", map "[$_]", undef.."B"), '[]');
110is(join(":", map "[$_]", "B"..""), '');
111is(join(":", map "[$_]", "B"..undef), '');
3f63a782 112
076d9a11 113# undef..undef used to segfault
4e086238 114is(join(":", map "[$_]", undef..undef), '[]');
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115
116# also test undef in foreach loops
117@foo=(); push @foo, $_ for undef..2;
4e086238 118is(join(":", @foo), '0:1:2');
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119
120@foo=(); push @foo, $_ for -2..undef;
4e086238 121is(join(":", @foo), '-2:-1:0');
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122
123@foo=(); push @foo, $_ for undef..'2';
4e086238 124is(join(":", @foo), '0:1:2');
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125
126@foo=(); push @foo, $_ for '-2'..undef;
4e086238 127is(join(":", @foo), '-2:-1:0');
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128
129@foo=(); push @foo, $_ for undef.."B";
4e086238 130is(join(":", map "[$_]", @foo), '[]');
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131
132@foo=(); push @foo, $_ for "".."B";
4e086238 133is(join(":", map "[$_]", @foo), '[]');
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134
135@foo=(); push @foo, $_ for "B"..undef;
4e086238 136is(join(":", map "[$_]", @foo), '');
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137
138@foo=(); push @foo, $_ for "B".."";
4e086238 139is(join(":", map "[$_]", @foo), '');
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140
141@foo=(); push @foo, $_ for undef..undef;
4e086238 142is(join(":", map "[$_]", @foo), '[]');
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143
144# again with magic
145{
146 my @a = (1..3);
147 @foo=(); push @foo, $_ for undef..$#a;
4e086238 148 is(join(":", @foo), '0:1:2');
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149}
150{
151 my @a = ();
152 @foo=(); push @foo, $_ for $#a..undef;
4e086238 153 is(join(":", @foo), '-1:0');
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154}
155{
156 local $1;
157 "2" =~ /(.+)/;
158 @foo=(); push @foo, $_ for undef..$1;
4e086238 159 is(join(":", @foo), '0:1:2');
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160}
161{
162 local $1;
163 "-2" =~ /(.+)/;
164 @foo=(); push @foo, $_ for $1..undef;
4e086238 165 is(join(":", @foo), '-2:-1:0');
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166}
167{
168 local $1;
169 "B" =~ /(.+)/;
170 @foo=(); push @foo, $_ for undef..$1;
4e086238 171 is(join(":", map "[$_]", @foo), '[]');
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172}
173{
174 local $1;
175 "B" =~ /(.+)/;
176 @foo=(); push @foo, $_ for ""..$1;
4e086238 177 is(join(":", map "[$_]", @foo), '[]');
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178}
179{
180 local $1;
181 "B" =~ /(.+)/;
182 @foo=(); push @foo, $_ for $1..undef;
4e086238 183 is(join(":", map "[$_]", @foo), '');
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184}
185{
186 local $1;
187 "B" =~ /(.+)/;
188 @foo=(); push @foo, $_ for $1.."";
4e086238 189 is(join(":", map "[$_]", @foo), '');
984a4bea 190}
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191
192# Test upper range limit
193my $MAX_INT = ~0>>1;
194
195foreach my $ii (-3 .. 3) {
196 my ($first, $last);
197 eval {
198 my $lim=0;
199 for ($MAX_INT-10 .. $MAX_INT+$ii) {
200 if (! defined($first)) {
201 $first = $_;
202 }
203 $last = $_;
204 last if ($lim++ > 100); # Protect against integer wrap
205 }
206 };
207 if ($ii <= 0) {
208 ok(! $@, 'Upper bound accepted: ' . ($MAX_INT+$ii));
209 is($first, $MAX_INT-10, 'Lower bound okay');
210 is($last, $MAX_INT+$ii, 'Upper bound okay');
211 } else {
212 ok($@, 'Upper bound rejected: ' . ($MAX_INT+$ii));
213 }
214}
215
216foreach my $ii (-3 .. 3) {
217 my ($first, $last);
218 eval {
219 my $lim=0;
220 for ($MAX_INT+$ii .. $MAX_INT) {
221 if (! defined($first)) {
222 $first = $_;
223 }
224 $last = $_;
225 last if ($lim++ > 100);
226 }
227 };
228 if ($ii <= 0) {
229 ok(! $@, 'Lower bound accepted: ' . ($MAX_INT+$ii));
230 is($first, $MAX_INT+$ii, 'Lower bound okay');
231 is($last, $MAX_INT, 'Upper bound okay');
232 } else {
233 ok($@, 'Lower bound rejected: ' . ($MAX_INT+$ii));
234 }
235}
236
237{
238 my $first;
239 eval {
240 my $lim=0;
241 for ($MAX_INT .. $MAX_INT-1) {
242 if (! defined($first)) {
243 $first = $_;
244 }
245 $last = $_;
246 last if ($lim++ > 100);
247 }
248 };
249 ok(! $@, 'Range accepted');
250 ok(! defined($first), 'Range ineffectual');
251}
252
253foreach my $ii (~0, ~0+1, ~0+(~0>>4)) {
254 eval {
255 my $lim=0;
256 for ($MAX_INT-10 .. $ii) {
257 last if ($lim++ > 100);
258 }
259 };
260 ok($@, 'Upper bound rejected: ' . $ii);
261}
262
263# Test lower range limit
264my $MIN_INT = -1-$MAX_INT;
265
266if (! $Config{d_nv_preserves_uv}) {
267 # $MIN_INT needs adjustment when IV won't fit into an NV
268 my $NV = $MIN_INT - 1;
269 my $OFFSET = 1;
270 while (($NV + $OFFSET) == $MIN_INT) {
271 $OFFSET++
272 }
273 $MIN_INT += $OFFSET;
274}
275
276foreach my $ii (-3 .. 3) {
277 my ($first, $last);
278 eval {
279 my $lim=0;
280 for ($MIN_INT+$ii .. $MIN_INT+10) {
281 if (! defined($first)) {
282 $first = $_;
283 }
284 $last = $_;
285 last if ($lim++ > 100);
286 }
287 };
288 if ($ii >= 0) {
289 ok(! $@, 'Lower bound accepted: ' . ($MIN_INT+$ii));
290 is($first, $MIN_INT+$ii, 'Lower bound okay');
291 is($last, $MIN_INT+10, 'Upper bound okay');
292 } else {
293 ok($@, 'Lower bound rejected: ' . ($MIN_INT+$ii));
294 }
295}
296
297foreach my $ii (-3 .. 3) {
298 my ($first, $last);
299 eval {
300 my $lim=0;
301 for ($MIN_INT .. $MIN_INT+$ii) {
302 if (! defined($first)) {
303 $first = $_;
304 }
305 $last = $_;
306 last if ($lim++ > 100);
307 }
308 };
309 if ($ii >= 0) {
310 ok(! $@, 'Upper bound accepted: ' . ($MIN_INT+$ii));
311 is($first, $MIN_INT, 'Lower bound okay');
312 is($last, $MIN_INT+$ii, 'Upper bound okay');
313 } else {
314 ok($@, 'Upper bound rejected: ' . ($MIN_INT+$ii));
315 }
316}
317
318{
319 my $first;
320 eval {
321 my $lim=0;
322 for ($MIN_INT+1 .. $MIN_INT) {
323 if (! defined($first)) {
324 $first = $_;
325 }
326 $last = $_;
327 last if ($lim++ > 100);
328 }
329 };
330 ok(! $@, 'Range accepted');
331 ok(! defined($first), 'Range ineffectual');
332}
333
334foreach my $ii (~0, ~0+1, ~0+(~0>>4)) {
335 eval {
336 my $lim=0;
337 for (-$ii .. $MIN_INT+10) {
338 last if ($lim++ > 100);
339 }
340 };
341 ok($@, 'Lower bound rejected: ' . -$ii);
342}
343
344# EOF