gecko/browser/devtools/debugger/test/browser_dbg_step-out.js

/* Any copyright is dedicated to the Public Domain.
   http://creativecommons.org/publicdomain/zero/1.0/ */

/**
 * Make sure that stepping out of a function displays the right return value.
 */

const TAB_URL = EXAMPLE_URL + "doc_step-out.html";

let gTab, gDebuggee, gPanel, gDebugger;
let gVars;

function test() {
  initDebugger(TAB_URL).then(([aTab, aDebuggee, aPanel]) => {
    gTab = aTab;
    gDebuggee = aDebuggee;
    gPanel = aPanel;
    gDebugger = gPanel.panelWin;
    gVars = gDebugger.DebuggerView.Variables;

    testNormalReturn();
  });
}

function testNormalReturn() {
  waitForSourceAndCaretAndScopes(gPanel, ".html", 17).then(() => {
    waitForCaretAndScopes(gPanel, 19).then(() => {
      let innerScope = gVars.getScopeAtIndex(0);
      let returnVar = innerScope.get("<return>");

      is(returnVar.name, "<return>",
        "Should have the right property name for the returned value.");
      is(returnVar.value, 10,
        "Should have the right property value for the returned value.");

      resumeDebuggee().then(() => testReturnWithException());
    });

    EventUtils.sendMouseEvent({ type: "mousedown" },
      gDebugger.document.getElementById("step-out"),
      gDebugger);
  });

  EventUtils.sendMouseEvent({ type: "click" },
    gDebuggee.document.getElementById("return"),
    gDebuggee);
}

function testReturnWithException() {
  waitForCaretAndScopes(gPanel, 24).then(() => {
    waitForCaretAndScopes(gPanel, 27).then(() => {
      let innerScope = gVars.getScopeAtIndex(0);
      let exceptionVar = innerScope.get("<exception>");

      is(exceptionVar.name, "<exception>",
        "Should have the right property name for the returned value.");
      is(exceptionVar.value, "boom",
        "Should have the right property value for the returned value.");

      resumeDebuggee().then(() => closeDebuggerAndFinish(gPanel));
    });

    EventUtils.sendMouseEvent({ type: "mousedown" },
      gDebugger.document.getElementById("step-out"),
      gDebugger);
  });

  EventUtils.sendMouseEvent({ type: "click" },
    gDebuggee.document.getElementById("throw"),
    gDebuggee);
}

function resumeDebuggee() {
  let deferred = promise.defer();
  gDebugger.gThreadClient.resume(deferred.resolve);
  return deferred.promise;
}

registerCleanupFunction(function() {
  gTab = null;
  gDebuggee = null;
  gPanel = null;
  gDebugger = null;
  gVars = null;
});