1 files changed, 59 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Object-apply-01.js b/js/src/jit-test/tests/debug/Object-apply-01.js
new file mode 100644
index 000000000..954e80b66
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Object-apply-01.js
@@ -0,0 +1,59 @@
+// tests calling script functions via Debugger.Object.prototype.apply/call
+
+load(libdir + "asserts.js");
+
+var g = newGlobal();
+g.eval("function f() { debugger; }");
+var dbg = new Debugger(g);
+
+var hits = 0;
+function test(usingApply) {
+    dbg.onDebuggerStatement = function (frame) {
+        var fn = frame.arguments[0];
+        var cv = usingApply ? fn.apply(null, [9, 16]) : fn.call(null, 9, 16);
+        assertEq(Object.keys(cv).join(","), "return");
+        assertEq(Object.getPrototypeOf(cv), Object.prototype);
+        assertEq(cv.return, 25);
+
+        cv = usingApply ? fn.apply(null, ["hello ", "world"]) : fn.call(null, "hello ", "world");
+        assertEq(Object.keys(cv).join(","), "return");
+        assertEq(cv.return, "hello world");
+
+        // Handle more or less arguments.
+        assertEq((usingApply ? fn.apply(null, [1, 5, 100]) : fn.call(null, 1, 5, 100)).return, 6);
+        assertEq((usingApply ? fn.apply(null, []) : fn.call(null)).return, NaN);
+        assertEq((usingApply ? fn.apply() : fn.call()).return, NaN);
+
+        // Throw if a this-value or argument is an object but not a Debugger.Object.
+        assertThrowsInstanceOf(function () { usingApply ? fn.apply({}, []) : fn.call({}); },
+                               TypeError);
+        assertThrowsInstanceOf(function () { usingApply ? fn.apply(null, [{}]) : fn.call(null, {}); },
+                               TypeError);
+        hits++;
+    };
+    g.eval("f(function (a, b) { return a + b; });");
+
+    // The callee receives the right arguments even if more arguments are provided
+    // than the callee's .length.
+    dbg.onDebuggerStatement = function (frame) {
+        assertEq((usingApply ? frame.arguments[0].apply(null, ['one', 'two'])
+                             : frame.arguments[0].call(null, 'one', 'two')).return,
+                 2);
+        hits++;
+    };
+    g.eval("f(function () { return arguments.length; });");
+
+    // Exceptions are reported as {throw:} completion values.
+    dbg.onDebuggerStatement = function (frame) {
+        var lose = frame.arguments[0];
+        var cv = usingApply ? lose.apply(null, []) : lose.call(null);
+        assertEq(Object.keys(cv).join(","), "throw");
+        assertEq(cv.throw, frame.callee);
+        hits++;
+    };
+    g.eval("f(function lose() { throw f; });");
+}
+
+test(true);
+test(false);
+assertEq(hits, 6);