1Test::XML::XPath(3)   User Contributed Perl Documentation  Test::XML::XPath(3)
2
3
4

NAME

6       Test::XML::XPath - Test XPath assertions
7

SYNOPSIS

9         use Test::XML::XPath tests => 3;
10         like_xpath( '<foo />', '/foo' );   # PASS
11         like_xpath( '<foo />', '/bar' );   # FAIL
12         unlike_xpath( '<foo />', '/bar' ); # PASS
13
14         is_xpath( '<foo>bar</foo>', '/foo', 'bar' ); # PASS
15         is_xpath( '<foo>bar</foo>', '/bar', 'foo' ); # FAIL
16
17         # More interesting examples of xpath assertions.
18         my $xml = '<foo attrib="1"><bish><bosh args="42">pub</bosh></bish></foo>';
19
20         # Do testing for attributes.
21         like_xpath( $xml, '/foo[@attrib="1"]' ); # PASS
22         # Find an element anywhere in the document.
23         like_xpath( $xml, '//bosh' ); # PASS
24         # Both.
25         like_xpath( $xml, '//bosh[@args="42"]' ); # PASS
26

DESCRIPTION

28       This module allows you to assert statements about your XML in the form
29       of XPath statements.  You can say that a piece of XML must contain
30       certain tags, with so-and-so attributes, etc.  It will try to use any
31       installed XPath module that it knows about.  Currently, this means
32       XML::LibXML and XML::XPath, in that order.
33
34       NB: Normally in XPath processing, the statement occurs from a context
35       node.  In the case of like_xpath(), the context node will always be the
36       root node.  In practice, this means that these two statements are
37       identical:
38
39          # Absolute path.
40          like_xpath( '<foo/>', '/foo' );
41          # Path relative to root.
42          like_xpath( '<foo/>', 'foo' );
43
44       It's probably best to use absolute paths everywhere in order to keep
45       things simple.
46
47       NB: Beware of specifying attributes.  Because they use an @-sign, perl
48       will complain about trying to interpolate arrays if you don't escape
49       them or use single quotes.
50

FUNCTIONS

52       like_xpath ( XML, XPATH [, NAME ] )
53           Assert that XML (a string containing XML) matches the statement
54           XPATH.  NAME is the name of the test.
55
56           Returns true or false depending upon test success.
57
58       unlike_xpath ( XML, XPATH [, NAME ] )
59           This is the reverse of like_xpath().  The test will only pass if
60           XPATH does not generates any matches in XML.
61
62           Returns true or false depending upon test success.
63
64       is_xpath ( XML, XPATH, EXPECTED [, NAME ] )
65           Evaluates XPATH against XML, and pass the test if the is EXPECTED.
66           Uses findvalue() internally.
67
68           Returns true or false depending upon test success.
69
70       set_xpath_processor ( CLASS )
71           Set the class name of the XPath processor used.  It is up to you to
72           ensure that this class is loaded.
73
74       In all cases, XML must be well formed, or the test will fail.
75

SEE ALSO

77       Test::XML.
78
79       XML::XPath, which is the basis for this module.
80
81       If you are not conversant with XPath, there are many tutorials
82       available on the web.  Google will point you at them.  The first one
83       that I saw was: <http://www.zvon.org/xxl/XPathTutorial/>, which appears
84       to offer interactive XPath as well as the tutorials.
85

AUTHOR

87       Dominic Mitchell <cpan2 (at) semantico.com>
88
90       Copyright 2002 by semantico
91
92       This library is free software; you can redistribute it and/or modify it
93       under the same terms as Perl itself.
94
95
96
97perl v5.30.1                      2020-01-30               Test::XML::XPath(3)
Impressum