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-rw-r--r--js/src/jit-test/tests/debug/Frame-onStep-02.js27
1 files changed, 27 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Frame-onStep-02.js b/js/src/jit-test/tests/debug/Frame-onStep-02.js
new file mode 100644
index 000000000..6e02449bc
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Frame-onStep-02.js
@@ -0,0 +1,27 @@
+// Setting frame.onStep to undefined turns off single-stepping.
+
+var g = newGlobal();
+g.a = 0;
+g.eval("function f() {\n" +
+ " a++;\n" +
+ " a++;\n" +
+ " a++;\n" +
+ " a++;\n" +
+ " return a;\n" +
+ "}\n");
+
+var dbg = Debugger(g);
+var seen = [0, 0, 0, 0, 0];
+dbg.onEnterFrame = function (frame) {
+ seen[g.a] = 1;
+ frame.onStep = function () {
+ seen[g.a] = 1;
+ if (g.a === 2) {
+ frame.onStep = undefined;
+ assertEq(frame.onStep, undefined);
+ }
+ };
+}
+
+g.f();
+assertEq(seen.join(","), "1,1,1,0,0");