The Perl and Raku Conference 2025: Greenville, South Carolina - June 27-29 Learn more

STRCEK / webrobot-0.81 / lib / WWW / Webrobot / Assert.pm 

            

              
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

              
package WWW::Webrobot::Assert;
use strict;
use warnings;
use WWW::Webrobot::Tree2Postfix;
use WWW::Webrobot::XHtml; # for method HTTP::Headers->xpath
my $unary_operator = {
    'not' => sub { ! $_[0] },
};
my $binary_operator = {
    'and' => sub { $_[0] && $_[1] },
    'or'  => sub { $_[0] || $_[1] },
};
my $predicate = {
    status => sub {
        my ($r, $tree) = @_;
        my $expect = $tree->{value};
        my $rc = $r->code;
        return $expect == $rc || 100*$expect <= $rc && $rc < 100*($expect+1) ? 1 : 0;
    },
    string => sub {
        my ($r, $tree) = @_;
        #use Data::Dumper; print STDERR Dumper $tree;
        my $pattern = quotemeta($tree->{value});
        return $r->content_encoded =~ m/$pattern/ ? 1 : 0;
    },
    regex => sub {
        my ($r, $tree) = @_;
        my $pattern = $tree->{value};
        return $r->content_encoded =~ m/$pattern/ ? 1 : 0;
    },
    xpath => sub {
        my ($r, $tree) = @_;
        my $xpath = $tree->{xpath};
        my $value = $tree->{value};
        # ??? quotemeta in pattern?
        return $r->xpath($xpath) =~ /$value/ ? 1 : 0;
    },
    timeout => sub {
        my ($r, $tree) = @_;
        return $r->elapsed_time() < $tree->{value} ? 1 : 0;
    },
    header => sub {
        my ($r, $tree) = @_;
        my $name = $tree->{name};
        my $pattern = $tree->{value};
        my $h = $r->header($name);
        return $h && $h =~ m/$pattern/ ? 1 : 0;
    },
    file => sub {
        my ($r, $tree) = @_;
        local *FILE;
        open FILE, "<", $tree->{value} or die "Can't open file: $tree->{value}";
        local $/;             # enable slurp mode
        my $text = <FILE>;    # read complete file
        close FILE;
        my $pattern = quotemeta($text);
        return $r->content_encoded =~ m/$pattern/ ? 1 : 0;
    },
};
sub new {
    my $class = shift;
    my $self = bless({}, ref($class) || $class);
    my ($tree) = @_;
    #use Data::Dumper; print STDERR "ASSERT: ", Dumper $tree;
    $self->{evaluator} = WWW::Webrobot::Tree2Postfix -> new(
        $unary_operator, $binary_operator, $predicate, "and"
    );
    $self->{evaluator} -> tree2postfix($tree);
    #use Data::Dumper; print STDERR "EVALUATOR: ", Dumper $self->{evaluator}->postfix;
    return $self;
}
sub check {
    my ($self, $r) = @_;
    my ($value, $error) = $self -> {evaluator} -> eval_postfix($r);
    return $value ? (0, $error) : (1, $error);
}
sub postfix {
    my ($self) = @_;
    return $self->{evaluator}->postfix;
}
1;
=head1 NAME
WWW::Webrobot::Assert - Assertions for (http) requests
=head1 Predicates
=over
=item status
=item regex
=item xpath
=item timeout
=back
=head1 Binary Operators
=over
=item and
=item or
=back
=head1 Unary Operators
=over
=item not
=back
=cut