browser_dbg-step-in-uninitialized.js (1355B)
1 /* This Source Code Form is subject to the terms of the Mozilla Public 2 * License, v. 2.0. If a copy of the MPL was not distributed with this 3 * file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */ 4 5 // When stepping into a function, 'let' variables should show as uninitialized 6 // instead of undefined. 7 8 "use strict"; 9 10 add_task(async function test() { 11 const dbg = await initDebugger("doc-step-in-uninitialized.html"); 12 invokeInTab("main"); 13 await waitForPaused(dbg, "doc-step-in-uninitialized.html"); 14 15 await stepOver(dbg); 16 await stepIn(dbg); 17 18 await assertPausedAtSourceAndLine( 19 dbg, 20 findSource(dbg, "doc-step-in-uninitialized.html").id, 21 8 22 ); 23 24 // We step past the 'let x' at the start of the function because it is not 25 // a breakpoint position. 26 Assert.equal(findNodeValue(dbg, "x"), "undefined", "x undefined"); 27 Assert.equal(findNodeValue(dbg, "y"), "(uninitialized)", "y uninitialized"); 28 29 await stepOver(dbg); 30 31 await assertPausedAtSourceAndLine( 32 dbg, 33 findSource(dbg, "doc-step-in-uninitialized.html").id, 34 9 35 ); 36 37 Assert.equal(findNodeValue(dbg, "y"), "3", "y initialized"); 38 }); 39 40 function findNodeValue(dbg, text) { 41 for (let index = 0; ; index++) { 42 const elem = findElement(dbg, "scopeNode", index); 43 if (elem?.innerText == text) { 44 return getScopeNodeValue(dbg, index); 45 } 46 } 47 }