Java Reference
In-Depth Information
public
HtmlUnitServletTestCase(String name) {
super
(name);
}
public void
end(WebResponse webResponse) {
// asserts
}
public void
test()
throws
ServletException {
SampleServlet servlet =
new
SampleServlet();
servlet.init(
this
.config);
// asserts
}
}
There are a couple of things to note in this example:
The
ServletTestCase
provides the following instance variables for your use:
■
AbstractServletConfigWrapper config
AbstractHttpServletRequestWrapper request
HttpServletResponse response
HttpSession session
The test method creates the servlet to test and initializes it.
■
Cactus integrates with
JU
nit 3; it doesn't provide
JU
nit 4 niceties.
■
Cactus tip
If your test class doesn't contain a begin method, the end method name must be
end
. If your test class includes a begin method, the end method name
must
match,
for example,
beginFoo
and
endFoo
; otherwise the end method won't be called.
Next, let's create the simple servlet in listing 12.12.
Listing 12.12
A simple servlet
[...]
public class
SampleServlet
extends
HttpServlet {
public void
doGet(HttpServletRequest request,
HttpServletResponse response)
throws
ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("<html><head><title>Hello
World</title></head><body><p>Hello World</p></body></html>");
}
}
This servlet returns an
HTML
document with a title and a single paragraph. The next
step is to flesh out our end method; we need to get an HtmlPage from the
WebResponse
argument and validate its contents. Getting an HtmlPage from a
WebResponse
requires
parsing the
HTML
. To do so, we use the HtmlUnit
HTMLParser
class:
