1 files changed, 70 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Script-01.js b/js/src/jit-test/tests/debug/Script-01.js
new file mode 100644
index 0000000000..c88d6bc3e2
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Script-01.js
@@ -0,0 +1,70 @@
+// We get the same Debugger.Script object instance each time we ask.
+
+var global = newGlobal({newCompartment: true});
+global.eval('function f() { debugger; }');
+global.eval('function g() { debugger; }');
+
+var debug = new Debugger(global);
+
+function evalAndNoteScripts(prog) {
+    var scripts = {};
+    debug.onDebuggerStatement = function(frame) {
+        if (frame.type == "call")
+            assertEq(frame.script, frame.callee.script);
+        scripts.frame = frame.script;
+        if (frame.arguments[0])
+            scripts.argument = frame.arguments[0].script;
+    };
+    global.eval(prog);
+    return scripts;
+}
+
+// If we create a frame for a function and pass it as a value, those should
+// both yield the same Debugger.Script instance.
+var scripts = evalAndNoteScripts('f(f)');
+assertEq(scripts.frame, scripts.argument);
+var fScript = scripts.argument;
+
+// If we call a second time, we should still get the same instance.
+scripts = evalAndNoteScripts('f(f)');
+assertEq(scripts.frame, fScript);
+assertEq(scripts.argument, fScript);
+
+// If we call with a different argument, we should get a different Debugger.Script.
+scripts = evalAndNoteScripts('f(g)');
+assertEq(scripts.frame !== scripts.argument, true);
+assertEq(scripts.frame, fScript);
+var gScript = scripts.argument;
+
+// See if we can get g via the frame.
+scripts = evalAndNoteScripts('g(f)');
+assertEq(scripts.frame !== scripts.argument, true);
+assertEq(scripts.frame,    gScript);
+assertEq(scripts.argument, fScript);
+
+// Different closures made from the same 'function' expression should yield
+// the same script.
+global.eval('function gen1(x) { return function clo(y) { return x+y; }; }');
+global.eval('var clo1 = gen1(42);');
+global.eval('var clo2 = gen1("smoot");');
+var scripts1 = evalAndNoteScripts('f(clo1)');
+var scripts2 = evalAndNoteScripts('f(clo2)');
+assertEq(scripts1.argument, scripts2.argument);
+
+// Different closures made from the same 'function' declaration should yield
+// the same script.
+global.eval('function gen2(x) { function clo(y) { return x+y; }; return clo; }');
+global.eval('var clo1 = gen2(42);');
+global.eval('var clo2 = gen2("smoot");');
+var scripts1 = evalAndNoteScripts('f(clo1)');
+var scripts2 = evalAndNoteScripts('f(clo2)');
+assertEq(scripts1.argument, scripts2.argument);
+
+// Different closures made from the same 'function' statement should yield
+// the same script.
+global.eval('function gen3(x) { if (true) { function clo(y) { return x+y; }; return clo; } }');
+global.eval('var clo1 = gen3(42);');
+global.eval('var clo2 = gen3("smoot");');
+var scripts1 = evalAndNoteScripts('f(clo1)');
+var scripts2 = evalAndNoteScripts('f(clo2)');
+assertEq(scripts1.argument, scripts2.argument);