1 files changed, 33 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/class-default-constructor-01.js b/js/src/jit-test/tests/debug/class-default-constructor-01.js
new file mode 100644
index 0000000000..3cfdc50221
--- /dev/null
+++ b/js/src/jit-test/tests/debug/class-default-constructor-01.js
@@ -0,0 +1,33 @@
+// 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);