Feature Requests item #1637716, was opened at 2007-01-17 14:36
Message generated for change (Settings changed) made by henryju
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Category: Core API
Group: Release 1.4
Status: Open
Priority: 5
Private: No
Submitted By: Peter Becker (peterbecker)
>Assigned to: Nobody/Anonymous (nobody)
Summary: XPath Assertions for boolean and text expressions
Initial Comment:
A feature we miss coming from Canoo Webtest is the option to do the following:
* assert that the booleanValue of an XPath is true
* assert that the textValue of an XPath is equal to an expected value
* assert that the textValue of an XPath matches a regular expression
We converted all our Webtests to HTMLUnit and are now considering moving to
JWebUnit, but while we could achieve these assertions with HTMLUnit+Jaxen, I
can't see easily how to do it with JWebUnit.
Here is a code sample for the boolean assertion on top of HTMLUnit and Jaxen:
protected void verifyXPath(String booleanXpath) {
String expandedXPath = expandConstants(booleanXpath);
Page curPage = this.session.getCurrentPage();
try {
boolean xpathEval;
if (curPage instanceof HtmlPage) {
XPath xpath = new HtmlUnitXPath(expandedXPath);
xpathEval = xpath.booleanValueOf(this.session.getDocumentElement());
} else {
// assume XmlPage
XPath xpath = new DOMXPath(expandedXPath);
xpath.setNamespaceContext(WebtestCase.XML_NAMESPACE_CONTEXT);
xpathEval = xpath.booleanValueOf(((XmlPage) curPage).getXmlDocument());
}
if (xpathEval != true) {
Assert.fail("XPath '" + expandedXPath + "' evaluates to false.");
}
} catch (JaxenException e) {
Assert.fail("Could not evaluate xpath '" + expandedXPath + "' (" +
e.getMessage() + ")");
}
}
The session object retrieves either the HTMLUnit Page object or the document
element of an HTML page. The first line just expands inline properties -- it is
not relevant here. It is pretty hacked but works for all the cases it has to
work (~300 converted Webtest XML files). A proper solution would require
factoring the HTML/XML distinction out, but shouldn't be too hard otherwise.
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