/
pre-post.t
182 lines (158 loc) · 3.49 KB
/
pre-post.t
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
use v6;
use Test;
# Test of PRE and POST traits
#
# L<S04/Phasers/"assert precondition at every block ">
# L<S06/Subroutine traits/PRE/POST>
plan 22;
sub foo(Int $i) {
PRE {
$i < 5
}
return 1;
}
sub bar(Int $i) {
return 1;
POST {
$i < 5;
}
}
lives_ok { foo(2) }, 'sub with PRE compiles and runs';
lives_ok { bar(3) }, 'sub with POST compiles and runs';
#?pugs todo
dies_ok { foo(10) }, 'Violated PRE throws (catchable) exception';
dies_ok { bar(10) }, 'Violated POST throws (catchable) exception';
# multiple PREs und POSTs
sub baz (Int $i) {
PRE {
$i > 0
}
PRE {
$i < 23
}
return 1;
}
lives_ok { baz(2) }, 'sub with two PREs compiles and runs';
#?pugs todo
dies_ok { baz(-1)}, 'sub with two PREs fails when first is violated';
#?pugs todo
dies_ok { baz(42)}, 'sub with two PREs fails when second is violated';
sub qox (Int $i) {
return 1;
POST {
$i > 0
}
POST {
$i < 42
}
}
lives_ok({ qox(23) }, "sub with two POSTs compiles and runs");
#?pugs todo
dies_ok( { qox(-1) }, "sub with two POSTs fails if first POST is violated");
dies_ok( { qox(123)}, "sub with two POSTs fails if second POST is violated");
class Another {
method test(Int $x) {
return 3 * $x;
POST {
$_ > 4
}
}
}
my $pt = Another.new;
#?pugs todo
lives_ok { $pt.test(2) }, 'POST receives return value as $_ (succeess)';
dies_ok { $pt.test(1) }, 'POST receives return value as $_ (failure)';
{
my $str;
{
PRE { $str ~= '('; 1 }
POST { $str ~= ')'; 1 }
$str ~= 'x';
}
#?pugs todo
is $str, '(x)', 'PRE and POST run on ordinary blocks';
}
{
my $str;
{
POST { $str ~= ')'; 1 }
LEAVE { $str ~= ']' }
ENTER { $str ~= '[' }
PRE { $str ~= '('; 1 }
$str ~= 'x';
}
#?pugs todo
is $str, '([x])', 'PRE/POST run outside ENTER/LEAVE';
}
{
my $str;
try {
{
PRE { $str ~= '('; 0 }
PRE { $str ~= '*'; 1 }
ENTER { $str ~= '[' }
$str ~= 'x';
LEAVE { $str ~= ']' }
POST { $str ~= ')'; 1 }
}
}
#?pugs todo
is $str, '(', 'failing PRE runs nothing else';
}
{
my $str;
try {
{
POST { $str ~= 'z'; 1 }
POST { $str ~= 'x'; 0 }
LEAVE { $str ~= 'y' }
}
}
#?pugs todo
is $str, 'yx', 'failing POST runs LEAVE but not more POSTs';
}
#?rakudo 3 todo 'POST and exceptions'
#?niecza skip 'unspecced'
{
my $str;
try {
POST { $str ~= $! // '<undef>'; 1 }
die 'foo';
}
#?pugs todo
ok $str ~~ /foo/, 'POST runs on exception, with correct $!';
}
#?niecza skip 'unspecced'
{
my $str;
try {
POST { $str ~= (defined $! ?? 'yes' !! 'no'); 1 }
try { die 'foo' }
$str ~= (defined $! ?? 'aye' !! 'nay');
}
#?pugs todo
is $str, 'ayeno', 'POST has undefined $! on no exception';
}
#?niecza skip 'unspecced'
{
try {
POST { 0 }
die 'foo';
}
#?pugs todo
ok $! ~~ /foo/, 'failing POST on exception doesn\'t replace $!';
# XXX
# is $!.pending.[-1], 'a POST exception', 'does push onto $!.pending';
}
{
my sub blockless($x) {
PRE $x >= 0;
POST $_ == 4;
return $x;
}
#?pugs todo
lives_ok { blockless(4) }, 'blockless PRE/POST (+)';
dies_ok { blockless -4 }, 'blockless PRE/POST (-, 1)';
dies_ok { blockless 14 }, 'blockless PRE/POST (-, 2)';
}
# vim: ft=perl6