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-rw-r--r--js/src/jit-test/tests/debug/Frame-onStep-assign-generator.js68
1 files changed, 68 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Frame-onStep-assign-generator.js b/js/src/jit-test/tests/debug/Frame-onStep-assign-generator.js
new file mode 100644
index 0000000000..2a733f3a83
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Frame-onStep-assign-generator.js
@@ -0,0 +1,68 @@
+// Changing onStep while the generator is suspended/dead is allowed.
+
+load(libdir + "asserts.js");
+
+const g = newGlobal({ newCompartment: true });
+const dbg = new Debugger(g);
+
+let steps = new Set();
+dbg.onDebuggerStatement = function(frame) {
+ // Setting 'onStep' while alive is allowed.
+ steps.add("debugger 1");
+ assertEq(frame.onStack, true);
+ frame.onStep = function() {
+ steps.add("onstep 1");
+ };
+
+ dbg.onDebuggerStatement = function() {
+ // Clear the 'onStep' while suspended.
+ steps.add("debugger 2");
+ assertEq(frame.onStack, false);
+
+ // Clearing 'onStep' while suspended is allowed.
+ frame.onStep = undefined;
+
+ // Setting 'onStep' while suspended is allowed.
+ frame.onStep = function() {
+ steps.add("onstep 2");
+ };
+
+ dbg.onDebuggerStatement = function() {
+ steps.add("debugger 3");
+ assertEq(frame.onStack, false);
+
+ // Clearing 'onStep' while dead is allowed.
+ frame.onStep = undefined;
+
+ // Setting 'onStep' while dead is allowed.
+ frame.onStep = function() {
+ steps.add("onstep 3");
+ };
+ };
+ };
+};
+
+g.eval(
+ `
+ function* myGen() {
+ debugger;
+ yield;
+ }
+
+ const g = myGen();
+ g.next();
+
+ debugger;
+ g.next();
+
+ debugger;
+ `
+);
+
+assertDeepEq(Array.from(steps), [
+ "debugger 1",
+ "onstep 1",
+ "debugger 2",
+ "onstep 2",
+ "debugger 3",
+]);