test_stepping-02.js

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/* Any copyright is dedicated to the Public Domain.

   http://creativecommons.org/publicdomain/zero/1.0/ */

"use strict";

/**

 * Check basic step-in functionality.

*/

add_task(

  threadFrontTest(async ({ threadFront, debuggee }) => {

    dumpn("Evaluating test code and waiting for first debugger statement");

    const dbgStmt = await executeOnNextTickAndWaitForPause(

      () => evaluateTestCode(debuggee),

      threadFront

);

    equal(

      dbgStmt.frame.where.line,

2,

      "Should be at debugger statement on line 2"

);

    equal(debuggee.a, undefined);

    equal(debuggee.b, undefined);

    const step1 = await stepIn(threadFront);

    equal(step1.why.type, "resumeLimit");

    equal(step1.frame.where.line, 3);

    equal(debuggee.a, undefined);

    equal(debuggee.b, undefined);

    const step3 = await stepIn(threadFront);

    equal(step3.why.type, "resumeLimit");

    equal(step3.frame.where.line, 4);

    equal(debuggee.a, 1);

    equal(debuggee.b, undefined);

    const step4 = await stepIn(threadFront);

    equal(step4.why.type, "resumeLimit");

    equal(step4.frame.where.line, 4);

    equal(debuggee.a, 1);

    equal(debuggee.b, 2);

})

);

function evaluateTestCode(debuggee) {

  // prettier-ignore

  Cu.evalInSandbox(

    `                                   // 1

    debugger;                           // 2

    var a = 1;                          // 3

    var b = 2;`,                        // 4

    debuggee,

    "1.8",

    "test_stepping-01-test-code.js",

);