source: trunk/essentials/dev-lang/perl/lib/Switch/t/given.t@ 3184

Last change on this file since 3184 was 3181, checked in by bird, 19 years ago

perl 5.8.8
File size: 7.0 KB
Line 
1BEGIN {
2 if ($ENV{PERL_CORE}) {
3 chdir('t') if -d 't';
4 @INC = qw(../lib);
5 }
6}
7
8use Carp;
9use Switch qw(Perl6 __ fallthrough);
10
11my($C,$M);sub ok{$C++;$M.=$_[0]?"ok $C\n":"not ok $C (line ".(caller)[2].")\n"}
12END{print"1..$C\n$M"}
13
14# NON-when THINGS;
15
16$when->{when} = { when => "when" };
17
18*when = \&when;
19
20# PREMATURE when
21
22eval { when 1 { ok(0) }; ok(0) } || ok(1);
23
24# H.O. FUNCS
25
26given __ > 2 {
27
28 when 1 { ok(0) } else { ok(1) }
29 when 2 { ok(0) } else { ok(1) }
30 when 3 { ok(1) } else { ok(0) }
31}
32
33given (3) {
34
35 eval { when __ <= 1 || __ > 2 { ok(0) } } || ok(1);
36 when __ <= 2 { ok(0) };
37 when __ <= 3 { ok(1) };
38}
39
40# POSSIBLE ARGS: NUMERIC, STRING, ARRAY, HASH, REGEX, CODE
41
42# 1. NUMERIC SWITCH
43
44for (1..3)
45{
46 given ($_) {
47 # SELF
48 when ($_) { ok(1) } else { ok(0) }
49
50 # NUMERIC
51 when 1 { ok ($_==1) } else { ok($_!=1) }
52 when (1) { ok ($_==1) } else { ok($_!=1) }
53 when 3 { ok ($_==3) } else { ok($_!=3) }
54 when (4) { ok (0) } else { ok(1) }
55 when (2) { ok ($_==2) } else { ok($_!=2) }
56
57 # STRING
58 when ('a') { ok (0) } else { ok(1) }
59 when 'a' { ok (0) } else { ok(1) }
60 when ('3') { ok ($_ == 3) } else { ok($_ != 3) }
61 when ('3.0') { ok (0) } else { ok(1) }
62
63 # ARRAY
64 when ([10,5,1]) { ok ($_==1) } else { ok($_!=1) }
65 when [10,5,1] { ok ($_==1) } else { ok($_!=1) }
66 when (['a','b']) { ok (0) } else { ok(1) }
67 when (['a','b',3]) { ok ($_==3) } else { ok ($_!=3) }
68 when (['a','b',2.0]) { ok ($_==2) } else { ok ($_!=2) }
69 when ([]) { ok (0) } else { ok(1) }
70
71 # HASH
72 when ({}) { ok (0) } else { ok (1) }
73 when {} { ok (0) } else { ok (1) }
74 when {1,1} { ok ($_==1) } else { ok($_!=1) }
75 when ({1=>1, 2=>0}) { ok ($_==1) } else { ok($_!=1) }
76
77 # SUB/BLOCK
78 when (sub {$_[0]==2}) { ok ($_==2) } else { ok($_!=2) }
79 when {$_[0]==2} { ok ($_==2) } else { ok($_!=2) }
80 when {0} { ok (0) } else { ok (1) } # ; -> SUB, NOT HASH
81 when {1} { ok (1) } else { ok (0) } # ; -> SUB, NOT HASH
82 }
83}
84
85
86# 2. STRING SWITCH
87
88for ('a'..'c','1')
89{
90 given ($_) {
91 # SELF
92 when ($_) { ok(1) } else { ok(0) }
93
94 # NUMERIC
95 when (1) { ok ($_ !~ /[a-c]/) } else { ok ($_ =~ /[a-c]/) }
96 when (1.0) { ok ($_ !~ /[a-c]/) } else { ok ($_ =~ /[a-c]/) }
97
98 # STRING
99 when ('a') { ok ($_ eq 'a') } else { ok($_ ne 'a') }
100 when ('b') { ok ($_ eq 'b') } else { ok($_ ne 'b') }
101 when ('c') { ok ($_ eq 'c') } else { ok($_ ne 'c') }
102 when ('1') { ok ($_ eq '1') } else { ok($_ ne '1') }
103 when ('d') { ok (0) } else { ok (1) }
104
105 # ARRAY
106 when (['a','1']) { ok ($_ eq 'a' || $_ eq '1') }
107 else { ok ($_ ne 'a' && $_ ne '1') }
108 when (['z','2']) { ok (0) } else { ok(1) }
109 when ([]) { ok (0) } else { ok(1) }
110
111 # HASH
112 when ({}) { ok (0) } else { ok (1) }
113 when ({a=>'a', 1=>1, 2=>0}) { ok ($_ eq 'a' || $_ eq '1') }
114 else { ok ($_ ne 'a' && $_ ne '1') }
115
116 # SUB/BLOCK
117 when (sub{$_[0] eq 'a' }) { ok ($_ eq 'a') }
118 else { ok($_ ne 'a') }
119 when {$_[0] eq 'a'} { ok ($_ eq 'a') } else { ok($_ ne 'a') }
120 when {0} { ok (0) } else { ok (1) } # ; -> SUB, NOT HASH
121 when {1} { ok (1) } else { ok (0) } # ; -> SUB, NOT HASH
122 }
123}
124
125
126# 3. ARRAY SWITCH
127
128my $iteration = 0;
129for ([],[1,'a'],[2,'b'])
130{
131 given ($_) {
132 $iteration++;
133 # SELF
134 when ($_) { ok(1) }
135
136 # NUMERIC
137 when (1) { ok ($iteration==2) } else { ok ($iteration!=2) }
138 when (1.0) { ok ($iteration==2) } else { ok ($iteration!=2) }
139
140 # STRING
141 when ('a') { ok ($iteration==2) } else { ok ($iteration!=2) }
142 when ('b') { ok ($iteration==3) } else { ok ($iteration!=3) }
143 when ('1') { ok ($iteration==2) } else { ok ($iteration!=2) }
144
145 # ARRAY
146 when (['a',2]) { ok ($iteration>=2) } else { ok ($iteration<2) }
147 when ([1,'a']) { ok ($iteration==2) } else { ok($iteration!=2) }
148 when ([]) { ok (0) } else { ok(1) }
149 when ([7..100]) { ok (0) } else { ok(1) }
150
151 # HASH
152 when ({}) { ok (0) } else { ok (1) }
153 when ({a=>'a', 1=>1, 2=>0}) { ok ($iteration==2) }
154 else { ok ($iteration!=2) }
155
156 # SUB/BLOCK
157 when {scalar grep /a/, @_} { ok ($iteration==2) }
158 else { ok ($iteration!=2) }
159 when (sub {scalar grep /a/, @_ }) { ok ($iteration==2) }
160 else { ok ($iteration!=2) }
161 when {0} { ok (0) } else { ok (1) } # ; -> SUB, NOT HASH
162 when {1} { ok (1) } else { ok (0) } # ; -> SUB, NOT HASH
163 }
164}
165
166
167# 4. HASH SWITCH
168
169$iteration = 0;
170for ({},{a=>1,b=>0})
171{
172 given ($_) {
173 $iteration++;
174
175 # SELF
176 when ($_) { ok(1) } else { ok(0) }
177
178 # NUMERIC
179 when (1) { ok (0) } else { ok (1) }
180 when (1.0) { ok (0) } else { ok (1) }
181
182 # STRING
183 when ('a') { ok ($iteration==2) } else { ok ($iteration!=2) }
184 when ('b') { ok (0) } else { ok (1) }
185 when ('c') { ok (0) } else { ok (1) }
186
187 # ARRAY
188 when (['a',2]) { ok ($iteration==2) }
189 else { ok ($iteration!=2) }
190 when (['b','a']) { ok ($iteration==2) }
191 else { ok ($iteration!=2) }
192 when (['b','c']) { ok (0) } else { ok (1) }
193 when ([]) { ok (0) } else { ok(1) }
194 when ([7..100]) { ok (0) } else { ok(1) }
195
196 # HASH
197 when ({}) { ok (0) } else { ok (1) }
198 when ({a=>'a', 1=>1, 2=>0}) { ok (0) } else { ok (1) }
199
200 # SUB/BLOCK
201 when {$_[0]{a}} { ok ($iteration==2) }
202 else { ok ($iteration!=2) }
203 when (sub {$_[0]{a}}) { ok ($iteration==2) }
204 else { ok ($iteration!=2) }
205 when {0} { ok (0) } else { ok (1) } # ; -> SUB, NOT HASH
206 when {1} { ok (1) } else { ok (0) } # ; -> SUB, NOT HASH
207 }
208}
209
210
211# 5. CODE SWITCH
212
213$iteration = 0;
214for ( sub {1},
215 sub { return 0 unless @_;
216 my ($data) = @_;
217 my $type = ref $data;
218 return $type eq 'HASH' && $data->{a}
219 || $type eq 'Regexp' && 'a' =~ /$data/
220 || $type eq "" && $data eq '1';
221 },
222 sub {0} )
223{
224 given ($_) {
225 $iteration++;
226 # SELF
227 when ($_) { ok(1) } else { ok(0) }
228
229 # NUMERIC
230 when (1) { ok ($iteration<=2) } else { ok ($iteration>2) }
231 when (1.0) { ok ($iteration<=2) } else { ok ($iteration>2) }
232 when (1.1) { ok ($iteration==1) } else { ok ($iteration!=1) }
233
234 # STRING
235 when ('a') { ok ($iteration==1) } else { ok ($iteration!=1) }
236 when ('b') { ok ($iteration==1) } else { ok ($iteration!=1) }
237 when ('c') { ok ($iteration==1) } else { ok ($iteration!=1) }
238 when ('1') { ok ($iteration<=2) } else { ok ($iteration>2) }
239
240 # ARRAY
241 when ([1, 'a']) { ok ($iteration<=2) }
242 else { ok ($iteration>2) }
243 when (['b','a']) { ok ($iteration==1) }
244 else { ok ($iteration!=1) }
245 when (['b','c']) { ok ($iteration==1) }
246 else { ok ($iteration!=1) }
247 when ([]) { ok ($iteration==1) } else { ok($iteration!=1) }
248 when ([7..100]) { ok ($iteration==1) }
249 else { ok($iteration!=1) }
250
251 # HASH
252 when ({}) { ok ($iteration==1) } else { ok ($iteration!=1) }
253 when ({a=>'a', 1=>1, 2=>0}) { ok ($iteration<=2) }
254 else { ok ($iteration>2) }
255
256 # SUB/BLOCK
257 when {$_[0]->{a}} { ok (0) } else { ok (1) }
258 when (sub {$_[0]{a}}) { ok (0) } else { ok (1) }
259 when {0} { ok (0) } else { ok (1) } # ; -> SUB, NOT HASH
260 when {1} { ok (0) } else { ok (1) } # ; -> SUB, NOT HASH
261 }
262}
263
264
265# NESTED SWITCHES
266
267for my $count (1..3)
268{
269 given ([9,"a",11]) {
270 when (qr/\d/) {
271 given ($count) {
272 when (1) { ok($count==1) }
273 else { ok($count!=1) }
274 when ([5,6]) { ok(0) } else { ok(1) }
275 }
276 }
277 ok(1) when 11;
278 }
279}
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