tests/org.eclipse.wst.jsdt.chromium.tests/src/org/eclipse/wst/jsdt/chromium/internal/v8native/DebugContextImplTest.java

// Copyright (c) 2009 The Chromium Authors. All rights reserved.
// This program and the accompanying materials are made available
// under the terms of the Eclipse Public License v2.0 which accompanies
// this distribution, and is available at
// https://www.eclipse.org/legal/epl-2.0/

package org.eclipse.wst.jsdt.chromium.internal.v8native;

import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.fail;

import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.CountDownLatch;

import org.eclipse.wst.jsdt.chromium.Breakpoint;
import org.eclipse.wst.jsdt.chromium.JsObject;
import org.eclipse.wst.jsdt.chromium.JsScope;
import org.eclipse.wst.jsdt.chromium.JsScope.Declarative;
import org.eclipse.wst.jsdt.chromium.JsScope.ObjectBased;
import org.eclipse.wst.jsdt.chromium.JsVariable;
import org.eclipse.wst.jsdt.chromium.DebugContext.StepAction;
import org.eclipse.wst.jsdt.chromium.JavascriptVm.BreakpointCallback;
import org.eclipse.wst.jsdt.chromium.internal.browserfixture.AbstractAttachedTest;
import org.eclipse.wst.jsdt.chromium.internal.transport.FakeConnection;
import org.junit.Ignore;
import org.junit.Test;

/**
 * A test for the DebugContextImpl class.
 */
public class DebugContextImplTest extends AbstractAttachedTest<FakeConnection>{

  /**
   * Tests the invalidation of the debug context for context-sensitive
   * operations (lookup etc.) on the "continue" request.
   * @throws Exception
   */
  @Test(timeout = 5000)
  @Ignore
  public void checkContextIsInvalidatedOnContinue() throws Exception {
    final Breakpoint[] bp = new Breakpoint[1];
    final String[] failure = new String[1];
    {
      final CountDownLatch latch = new CountDownLatch(1);
      Breakpoint.Target target = new Breakpoint.Target.ScriptName("file:///C:/1.js");
      javascriptVm.setBreakpoint(target, 18, 3, true, null,
          new BreakpointCallback() {

            public void failure(String errorMessage) {
              failure[0] = errorMessage == null ? "" : errorMessage;
              latch.countDown();
            }

            public void success(Breakpoint breakpoint) {
              bp[0] = breakpoint;
              latch.countDown();
            }
          },
          null);
      latch.await();
    }
    assertNull("Failed to set a breakpoint: " + failure[0], failure[0]);
    assertNotNull("Breakpoint not set", bp[0]);

    {
      CountDownLatch latch = expectSuspend();
      messageResponder.hitBreakpoints(Collections.singleton(bp[0].getId()));
      latch.await();
    }

    List<? extends JsScope> variableScopes =
        suspendContext.getCallFrames().get(0).getVariableScopes();

    Collection<? extends JsVariable> variables = getScopeVariables(variableScopes.get(0));

    // This call invalidates the debug context for the "lookup" operation that is invoked
    // inside "ensureProperties".
    suspendContext.continueVm(StepAction.CONTINUE, 1, null);
    JsObject jsObject = variables.iterator().next().getValue().asObject();
    try {
      jsObject.getProperties();
      fail();
    } catch (RuntimeException e) {
      // this exception is expected
    }
  }

  /**
   * Checks that the debug context for context-sensitive operations
   * (lookup etc.) is valid before sending the "continue" request.
   * @throws Exception
   */
  @Test(timeout = 5000)
  @Ignore
  public void checkContextIsValidOffHand() throws Exception {
    final Breakpoint[] bp = new Breakpoint[1];
    final String[] failure = new String[1];
    {
      final CountDownLatch latch = new CountDownLatch(1);
      Breakpoint.Target target = new Breakpoint.Target.ScriptName("file:///C:/1.js");
      javascriptVm.setBreakpoint(target, 18, 3, true, null,
          new BreakpointCallback() {

            public void failure(String errorMessage) {
              failure[0] = errorMessage == null ? "" : errorMessage;
              latch.countDown();
            }

            public void success(Breakpoint breakpoint) {
              bp[0] = breakpoint;
              latch.countDown();
            }
          },
          null);
      latch.await();
    }
    assertNull("Failed to set a breakpoint: " + failure[0], failure[0]);
    assertNotNull("Breakpoint not set", bp[0]);

    {
      CountDownLatch latch = expectSuspend();
      messageResponder.hitBreakpoints(Collections.singleton(bp[0].getId()));
      latch.await();
    }

    List<? extends JsScope> variableScopes =
        suspendContext.getCallFrames().get(0).getVariableScopes();

    Collection<? extends JsVariable> variables = getScopeVariables(variableScopes.get(0));

    JsObject jsObject = variables.iterator().next().getValue().asObject();
    // This call should finish OK
    jsObject.getProperties();
  }

  @Override
  protected FakeConnection createConnection() {
    return new FakeConnection(messageResponder);
  }

  private static Collection<? extends JsVariable> getScopeVariables(JsScope scope) {
    return scope.accept(new JsScope.Visitor<Collection<? extends JsVariable>>() {
      @Override
      public Collection<? extends JsVariable> visitDeclarative(Declarative declarativeScope) {
        return declarativeScope.getVariables();
      }

      @Override
      public Collection<? extends JsVariable> visitObject(ObjectBased objectScope) {
        return objectScope.getScopeObject().getProperties();
      }

    });
  }
}