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/*
* Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/**
* @test
* @summary Test stepping through lambdas
* @author Staffan Larsen
*
* @run build TestScaffold VMConnection TargetListener TargetAdapter
* @run compile -g LambdaStepTest.java
* @run driver LambdaStepTest
*/
import com.sun.jdi.LocalVariable;
import com.sun.jdi.ObjectReference;
import com.sun.jdi.ReferenceType;
import com.sun.jdi.StackFrame;
import com.sun.jdi.StringReference;
import com.sun.jdi.ThreadReference;
import com.sun.jdi.event.BreakpointEvent;
import com.sun.jdi.event.StepEvent;
/********** target program **********/
interface DefaultTest {
default void defaultMethod() {
String from = "default";
System.out.println("Hello from " + from);
}
}
class LambdaStepTestTarg implements DefaultTest {
private void test() {
String from = "test";
System.out.println("Hello from " + from);
}
private static void instanceTest() {
LambdaStepTestTarg l = new LambdaStepTestTarg();
l.test();
}
private static void lambdaTest() {
Runnable r = () -> {
String from = "lambda";
System.out.println("Hello from " + from);
};
r.run();
}
private static void defaultTest() {
LambdaStepTestTarg l = new LambdaStepTestTarg();
l.defaultMethod();
}
public static void main(String[] args) {
instanceTest();
lambdaTest();
defaultTest();
System.out.println("Goodbye from LambdaStepTestTarg!");
}
}
/********** test program **********/
public class LambdaStepTest extends TestScaffold {
LambdaStepTest (String args[]) {
super(args);
}
public static void main(String[] args)
throws Exception
{
new LambdaStepTest (args).startTests();
}
/********** test core **********/
protected void runTests()
throws Exception
{
// ## Normal instance method
BreakpointEvent bpe = startTo("LambdaStepTestTarg", "instanceTest", "()V");
ThreadReference thread = bpe.thread();
// step over allocation
StepEvent se = stepOverLine(thread);
System.out.println(se.thread().frame(0));
// step into test();
se = stepIntoLine(thread);
System.out.println(se.thread().frame(0));
// step over variable initialization
se = stepOverLine(thread);
System.out.println(se.thread().frame(0));
// get value of variable "from"
StackFrame frame = se.thread().frame(0);
LocalVariable lv = frame.visibleVariableByName("from");
System.out.println(lv);
StringReference sr = (StringReference) frame.getValue(lv);
if (!sr.value().equals("test")) {
throw new Exception("Unexpected variable value in instanceTest: "+sr.value());
}
// ## Lambda method
bpe = resumeTo("LambdaStepTestTarg", "lambdaTest", "()V");
thread = bpe.thread();
// step over allocation
se = stepOverLine(thread);
System.out.println(se.thread().frame(0));
// step into run() of the lambda
se = stepIntoLine(thread);
System.out.println(se.thread().frame(0));
// step over variable initialization
se = stepOverLine(thread);
System.out.println(se.thread().frame(0));
// get value of variable "from"
frame = se.thread().frame(0);
lv = frame.visibleVariableByName("from");
System.out.println(lv);
sr = (StringReference) frame.getValue(lv);
if (!sr.value().equals("lambda")) {
throw new Exception("Unexpected variable value in lambdaTest: "+sr.value());
}
// ## Default method
bpe = resumeTo("LambdaStepTestTarg", "defaultTest", "()V");
thread = bpe.thread();
// step over allocation
se = stepOverLine(thread);
System.out.println(se.thread().frame(0));
// step into defaultMethod()
se = stepIntoLine(thread);
System.out.println(se.thread().frame(0));
// step over variable initialization
se = stepOverLine(thread);
System.out.println(se.thread().frame(0));
// get value of variable "from"
frame = se.thread().frame(0);
lv = frame.visibleVariableByName("from");
System.out.println(lv);
sr = (StringReference) frame.getValue(lv);
if (!sr.value().equals("default")) {
throw new Exception("Unexpected variable value in lambdaTest: "+sr.value());
}
/*
* resume the target listening for events
*/
listenUntilVMDisconnect();
}
}
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