inspec/docs/resources/xml.md.erb
Mark Hughes 45926ef63a Added xml resource support for ints, bools, and string responses (#3583)
Methods like…

* `count()` return `Integer` values
* `boolean()` return `TrueClass`/`FalseClass` values
* `concat()` return `String` values

…but threw exceptions because those types weren't supported.

This adds support to the `xml` resource, and adds tests to verify some of those examples.

Signed-off-by: Mark Hughes <greenantdotcom@users.noreply.github.com>
2018-11-08 12:47:18 -05:00

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---
title: About the xml Resource
platform: os
---
# xml
Use the `xml` InSpec audit resource to test data in an XML file.
<br>
## Availability
### Installation
This resource is distributed along with InSpec itself. You can use it automatically.
### Version
This resource first became available in v1.37.6 of InSpec.
## Syntax
An `xml` resource block declares the data to be tested. Assume the following XML file:
<root>
<name>hello</name>
<meta>
<creator>John Doe</creator>
</meta>
<array>
<element>one</element>
<element>two</element>
</array>
<array>
<element value="one"></element>
<element value="two"></element>
</array>
</root>
This file can be queried for elements using:
describe xml('/path/to/name.xml') do
its('root/name') { should eq ['hello'] }
its('root/meta/creator') { should eq ['John Doe'] }
its('root/array[2]/element') { should eq ['two'] }
end
This file can be queried for attributes using:
describe xml('/path/to/name.xml') do
its('root/array[2]/element/@value') { should eq ['one', 'two'] }
its('root/array[2]/element/attribute::value') { should eq ['one', 'two'] }
its('root/array[2]/element[2]/attribute::value') { should eq ['two'] }
its('count(//*)') { should eq [42] }
its('boolean(root/array[2]/element[2]/@valid)') { should eq [false] }
end
where
* `root/name` and `root/array[2]/element/@value` is an XPath expression
* `should eq ['foo']` tests a value of `root/name` as read from an XML file versus the value declared in the test
In the above example, you see the use of `@` and `attribute::` which are both methods of fetching attributes.
In the event the path contains an element which contains periods, the alternate syntax can be used:
its(['root/name.with.a.period']) { should cmp 'so_many_dots' }
<br>
## Examples
The following examples show how to use this InSpec audit resource.
### Test an AppPool's presence in an applicationHost.config file or the default site under applicationHost.sites
describe xml('applicationHost.config') do
# using the alternate syntax as described above because of the . in the key name
its(['configuration/system.applicationHost/applicationPools/add@name']) { should contain('my_pool') }
end
describe xml('applicationHost.sites') do
its('site[@name="Default Web Site"]/application/virtualDirectory/@path') { should eq ['/'] }
end
<br>
## Matchers
For a full list of available matchers, please visit our [matchers page](https://www.inspec.io/docs/reference/matchers/).
### name
The `name` matcher tests the value of `name` as read from a JSON file versus the value declared in the test:
its('name') { should eq 'foo' }