class-default-constructor-01.js

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// We should be able to retrieve the script of a class's default constructor.

var g = newGlobal({newCompartment: true});

var dbg = new Debugger;

var gDO = dbg.addDebuggee(g);

// Class definitions go in the global's lexical environment, so we can't use

// getOwnPropertyDescriptor or g.X to retrieve their constructor.

//

// Derived clasess use a different script, so check those too.

gDO.executeInGlobal(`   // 1729

  class X {};           // 1730

                        // 1731

                        // 1732

  class Y extends X {}; // 1733

`, { lineNumber: 1729 });

function check(name, text, startLine) {

  print(`checking ${name}`);

  var desc = gDO.executeInGlobal(name).return;

  assertEq(desc.class, 'Function');

  assertEq(desc.name, name);

  var script = desc.script;

  assertEq(script instanceof Debugger.Script, true,

           "default constructor's script should be available");

  assertEq(script.startLine, startLine,

           "default constructor's starting line should be set");

  var source = script.source;

  assertEq(source.text.substr(script.sourceStart, script.sourceLength), text);

check('X', 'class X {}', 1730);

check('Y', 'class Y extends X {}', 1733);