Hi there!
I got another problem in trying to create tests for my application with junit
and ant; this one is kinda weird, I think.
The application is a database-based server that has to be started in order to
be tested properly. So I have two targets that are executed one after the
other. The first uses a java-task to start the server in ant's VM
(fork="false"). The second is the junit-task (also fork="false") that tests
some server output.
The "first" class of the server ("Supervisor") now has a public static field
describing it's sole instance, so I have a starting point from which to wander
off into the server. But when I try to access this field from my test class the
class Supervisor is initialized a second time and the fields value is (of
course) (reset to) null; I can't find the server. I tried direct access to the
static fild (Supervisor.lastInstance) and introspection - no difference.
I'm quite positive that ant doesn't start a second VM for either the server or
junit. Does anyone have an idea why I cannot access my loaded and initialized
server class from the test class?
Here are some excerpts from the build.xml, the server class, the test class and
ant's output.
(Note: TestBGStarter just wraps the Supervisor)
---------------------------------------------------
<target name="test-start-server" depends="compile">
<echo message="starting server"/>
<delete file="test.server.log"/>
<java classname="xxx.supervisor.TestBGStarter"
classpath="${oracle.home}/jdbc/lib/classes111.zip:${build.classpath}:${compile.dir}"
fork="false"
failonerror="true">
<arg line="-config test.server.config"/>
</java>
<echo message="waiting for server to come up"/>
<exec executable="isserverup.pl">
<arg line="test.server.log"/>
</exec>
<echo message="server running"/>
</target>
<target name="test-do" depends="compile">
<junit printsummary="true"
fork="false">
<classpath>
<pathelement location="${oracle.home}/jdbc/lib/classes111.zip"/>
<pathelement path="${build.classpath}"/>
<pathelement location="${compile.dir}"/>
</classpath>
<formatter type="plain"
usefile="false"/>
<test name="xxx.command_post.ASInfoTester"
fork="false"/>
</junit>
</target>
---------------------------------------------------
private Supervisor( ConfigFile conf )
{
config = conf;
System.err.print( "Supervisor::init: lastInstance from "+lastInstance );
lastInstance = this;
System.err.println( " to "+lastInstance );
}
public static Supervisor lastInstance;
static { System.err.println( "INIT OF CLASS Supervisor" ); }
---------------------------------------------------
public void setUp()
{
Class sup_class;
Field sup_self_field;
Supervision server;
CommandsSupervisor cs;
// get ref to server Supervisor
try
{
// sup_class = Class.forName( "xxx.supervisor.Supervisor", false,
this.getClass().getClassLoader() );
// sup_self_field = sup_class.getField( "lastInstance" );
// System.err.println("found field: "+sup_self_field.getName()+" mod:
"+sup_self_field.getModifiers()+" class:
"+sup_self_field.getDeclaringClass().getName()+" type:
"+sup_self_field.getType().getName()+" acc: "+sup_self_field.isAccessible() );
// server = (Supervision)sup_self_field.get( null ); // static field;
System.err.println("looking for Supervisor");
server = Supervisor.lastInstance;
System.err.println("found supervisor: "+server);
}
catch( Exception e ) { e.printStackTrace(); }
}
---------------------------------------------------
Ant version 1.3 compiled on March 2 2001
Buildfile: build.xml
Detected Java Version: 1.3
Detected OS: Linux
[...]
test-start-server:
[echo] starting server
[delete] Deleting: /xxx/test.server.log
[java] Running in same VM xxx.supervisor.TestBGStarter -config test.server.config
INIT OF CLASS Supervisor
[echo] waiting for server to come up
[exec] Myos = Linux
[exec] isserverup.pl test.server.log
Supervisor::init: lastInstance from null to xxx.supervisor.Supervisor@f73c1
[echo] server running
test-do:
[junit] Using System properties {}
[junit] Using CLASSPATH [...]
[junit] Running xxx.command_post.ASInfoTester
looking for Supervisor
INIT OF CLASS Supervisor
found supervisor: null
---------------------------------------------------
greetinx, Kai
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