@Test
  public void testDetachMultistatusFromCoreException() {
    // #input
    // st4
    // -ex4
    // --cex
    // ---mst3
    // ----ex1
    // ----st1
    // -----ex2
    // ----st2
    // -----ex3
    Status st = st(ex(cex(mst(ex(), st(ex()), st(ex())))));
    // #expected output
    // st4
    // -ex4
    // --cex(mst3)
    // ---ex1
    // -mst3 (moved from cex to st4.children)
    // --ex1
    // --st1
    // ---ex2
    // --st2
    // ---ex3
    org.eclipse.epp.internal.logging.aeri.ui.model.Status st4 =
        Reports.newStatus(st, configuration);
    Throwable ex4 = st4.getException();
    Throwable cex = ex4.getCause();
    Throwable ex1 = cex.getCause();
    org.eclipse.epp.internal.logging.aeri.ui.model.Status mst3 = st4.getChildren().get(0);
    Throwable ex1b = mst3.getException();
    org.eclipse.epp.internal.logging.aeri.ui.model.Status st1 = mst3.getChildren().get(0);
    Throwable ex2 = st1.getException();
    org.eclipse.epp.internal.logging.aeri.ui.model.Status st2 = mst3.getChildren().get(1);
    Throwable ex3 = st2.getException();

    assertThat(st4.getMessage(), is("st4"));
    assertThat(ex4.getMessage(), is("ex4"));
    assertThat(cex.getMessage(), is("mst3"));
    assertThat(ex1.getMessage(), is("ex1"));
    assertThat(
        mst3.getMessage(),
        is("mst3 [detached from CoreException of Status 'st4' by Error Reporting]"));
    assertThat(ex1b.getMessage(), is("ex1"));
    assertThat(st1.getMessage(), is("st1"));
    assertThat(ex2.getMessage(), is("ex2"));
    assertThat(st2.getMessage(), is("st2"));
    assertThat(ex3.getMessage(), is("ex3"));
  }
  @Test
  public void testCoreExceptionHandling() {
    IStatus causingStatus = new Status(IStatus.ERROR, "the.causing.plugin", "first message");
    java.lang.Throwable causingException = new CoreException(causingStatus);
    IStatus causedStatus =
        new Status(IStatus.WARNING, "some.calling.plugin", "any other message", causingException);
    java.lang.Throwable rootException = new CoreException(causedStatus);
    IStatus rootEvent =
        new Status(
            IStatus.ERROR, "org.eclipse.epp.logging.aeri", "someErrorMessage", rootException);

    org.eclipse.epp.internal.logging.aeri.ui.model.Status rootStatus =
        Reports.newStatus(rootEvent, configuration);

    org.eclipse.epp.internal.logging.aeri.ui.model.Status child = rootStatus.getChildren().get(0);
    org.eclipse.epp.internal.logging.aeri.ui.model.Status leaf = child.getChildren().get(0);
    assertThat(child.getPluginId(), is("some.calling.plugin"));
    assertThat(leaf.getPluginId(), is("the.causing.plugin"));
  }
  @Test
  public void testMultistatusDuplicateChildFiltering() {

    Exception e1 = new Exception("Stack Trace");
    e1.setStackTrace(
        createStacktraceForClasses(
            "java.lang.Object",
            "org.eclipse.core.internal.jobs.WorkerPool",
            "org.eclipse.core.internal.jobs.WorkerPool",
            "org.eclipse.core.internal.jobs.Worker"));
    IStatus s1 =
        new Status(
            IStatus.ERROR,
            "org.eclipse.ui.monitoring",
            "Thread 'Worker-3' tid=39 (TIMED_WAITING)\n"
                + "Waiting for: org.eclipse.core.internal.jobs.WorkerPool@416dc7fc",
            e1);

    Exception e2 = new Exception("Stack Trace");
    e2.setStackTrace(
        TestReports.createStacktraceForClasses(
            "java.lang.Object",
            "org.eclipse.core.internal.jobs.WorkerPool",
            "org.eclipse.core.internal.jobs.WorkerPool",
            "org.eclipse.core.internal.jobs.Worker"));
    IStatus s2 =
        new Status(
            IStatus.ERROR,
            "org.eclipse.ui.monitoring",
            "Thread 'Worker-2' tid=36 (TIMED_WAITING)\n"
                + "Waiting for: org.eclipse.core.internal.jobs.WorkerPool@416dc7fc",
            e2);

    IStatus multi =
        new MultiStatus(
            "org.eclipse.ui.monitoring",
            0,
            new IStatus[] {s1, s2},
            "UI freeze of 10s at 08:09:02.936",
            new RuntimeException("stand-in-stacktrace"));
    org.eclipse.epp.internal.logging.aeri.ui.model.Status newStatus =
        Reports.newStatus(multi, configuration);
    assertThat(newStatus.getChildren().size(), is(1));
    assertThat(
        newStatus.getMessage(),
        is(
            "UI freeze of 10s at 08:09:02.936 [1 child-status duplicates removed by Error Reporting]"));
  }
  @Test
  public void testMultistatusChildFilteringHandlesEmptyStacktrace() {

    Exception e1 = new Exception("Stack Trace 1");
    e1.setStackTrace(new java.lang.StackTraceElement[0]);
    IStatus s1 =
        new Status(
            IStatus.ERROR,
            "org.eclipse.ui.monitoring",
            "Thread 'Signal Dispatcher' tid=4 (RUNNABLE)",
            e1);

    IStatus multi =
        new MultiStatus(
            "org.eclipse.ui.monitoring",
            0,
            new IStatus[] {s1},
            "UI freeze of 10s at 08:09:02.936",
            new RuntimeException("stand-in-stacktrace"));
    org.eclipse.epp.internal.logging.aeri.ui.model.Status newStatus =
        Reports.newStatus(multi, configuration);
    assertThat(newStatus.getChildren().size(), is(0));
  }
  @Test
  public void testMultistatusMainStacktracesNotFiltered() {

    Exception e1 = new Exception("Stack Trace");
    java.lang.StackTraceElement[] stackTrace =
        createStacktraceForClasses(
            "java.lang.Thread",
            "org.eclipse.epp.logging.aeri.ui.actions.UiFreezeAction",
            "org.eclipse.ui.internal.PluginAction",
            "org.eclipse.ui.internal.WWinPluginAction",
            "org.eclipse.jface.action.ActionContributionItem",
            "org.eclipse.jface.action.ActionContributionItem",
            "org.eclipse.jface.action.ActionContributionItem",
            "org.eclipse.swt.widgets.EventTable",
            "org.eclipse.swt.widgets.Display",
            "org.eclipse.swt.widgets.Widget",
            "org.eclipse.swt.widgets.Display",
            "org.eclipse.swt.widgets.Display",
            "org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine",
            "org.eclipse.core.databinding.observable.Realm",
            "org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine",
            "org.eclipse.e4.ui.internal.workbench.E4Workbench",
            "org.eclipse.ui.internal.Workbench",
            "org.eclipse.core.databinding.observable.Realm",
            "org.eclipse.ui.internal.Workbench",
            "org.eclipse.ui.PlatformUI",
            "org.eclipse.ui.internal.ide.application.IDEApplication",
            "org.eclipse.equinox.internal.app.EclipseAppHandle",
            "org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher",
            "org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher",
            "org.eclipse.core.runtime.adaptor.EclipseStarter",
            "org.eclipse.core.runtime.adaptor.EclipseStarter",
            "sun.reflect.NativeMethodAccessorImpl",
            "sun.reflect.NativeMethodAccessorImpl",
            "sun.reflect.DelegatingMethodAccessorImpl",
            "java.lang.reflect.Method",
            "org.eclipse.equinox.launcher.Main",
            "org.eclipse.equinox.launcher.Main",
            "org.eclipse.equinox.launcher.Main",
            "org.eclipse.equinox.launcher.Main",
            "org.eclipse.equinox.launcher.Main");
    e1.setStackTrace(stackTrace);
    IStatus s1 =
        new Status(
            IStatus.ERROR,
            "org.eclipse.ui.monitoring",
            "Sample at 11:25:04.447 (+1,331s)\n" + "Thread 'main' tid=1 (TIMED_WAITING)",
            e1);

    IStatus multi =
        new MultiStatus(
            "org.eclipse.ui.monitoring",
            0,
            new IStatus[] {s1},
            "UI freeze of 6,0s at 11:24:59.108",
            new RuntimeException("stand-in-stacktrace"));
    org.eclipse.epp.internal.logging.aeri.ui.model.Status newStatus =
        Reports.newStatus(multi, configuration);
    assertThat(newStatus.getChildren().size(), is(1));
    assertThat(
        newStatus.getChildren().get(0).getException().getStackTrace().size(),
        is(stackTrace.length));
  }
  @Test
  public void testDetachMultipleMultistatusFromCoreException() {
    // #input
    // st9
    // -ex6
    // --cex
    // ---st8
    // ----cex
    // -----mst7
    // ------ex1
    // ------st4
    // -------cex
    // --------mst3
    // ---------ex2
    // ---------st1
    // ----------ex3
    // ---------st2
    // ----------ex4
    // ------st6
    // -------cex
    // --------st5
    // ---------ex5
    Status st =
        st(ex(cex(st(cex(mst(ex(), st(cex(mst(ex(), st(ex()), st(ex())))), st(cex(st(ex())))))))));
    // #expected output
    // st9
    // -st8
    // --mst7
    // ---ex1
    // ---st4
    // ----mst3
    // -----ex2
    // ----st1
    // -----ex3
    // ----st2
    // -----ex4
    // ---st6
    // ----st5
    // -----ex5
    org.eclipse.epp.internal.logging.aeri.ui.model.Status st9 =
        Reports.newStatus(st, configuration);
    Throwable ex6 = st9.getException();
    org.eclipse.epp.internal.logging.aeri.ui.model.Status st8 = st9.getChildren().get(0);
    org.eclipse.epp.internal.logging.aeri.ui.model.Status mst7 = st8.getChildren().get(0);
    org.eclipse.epp.internal.logging.aeri.ui.model.Status st4 = mst7.getChildren().get(0);
    org.eclipse.epp.internal.logging.aeri.ui.model.Status mst3 = st4.getChildren().get(0);
    org.eclipse.epp.internal.logging.aeri.ui.model.Status st2 = mst3.getChildren().get(1);
    Throwable ex4 = st2.getException();
    org.eclipse.epp.internal.logging.aeri.ui.model.Status st6 = mst7.getChildren().get(1);
    org.eclipse.epp.internal.logging.aeri.ui.model.Status st5 = st6.getChildren().get(0);
    Throwable ex5 = st5.getException();

    assertThat(st9.getMessage(), is("st9"));
    assertThat(ex6.getMessage(), is("ex6"));
    assertThat(
        st8.getMessage(),
        is("st8 [detached from CoreException of Status 'st9' by Error Reporting]"));
    assertThat(
        mst7.getMessage(),
        is("mst7 [detached from CoreException of Status 'st8' by Error Reporting]"));
    assertThat(st4.getMessage(), is("st4"));
    assertThat(
        mst3.getMessage(),
        is("mst3 [detached from CoreException of Status 'st4' by Error Reporting]"));
    assertThat(st2.getMessage(), is("st2"));
    assertThat(ex4.getMessage(), is("ex4"));
    assertThat(st6.getMessage(), is("st6"));
    assertThat(
        st5.getMessage(),
        is("st5 [detached from CoreException of Status 'st6' by Error Reporting]"));
    assertThat(ex5.getMessage(), is("ex5"));
  }