1 files changed, 68 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Script-isInCatchScope.js b/js/src/jit-test/tests/debug/Script-isInCatchScope.js
new file mode 100644
index 000000000..0aabc5da4
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Script-isInCatchScope.js
@@ -0,0 +1,68 @@
+// Test if isInCatchScope properly detects catch blocks.
+
+let g = newGlobal();
+let dbg = new Debugger(g);
+
+function test(string, mustBeCaught) {
+    let index = 0;
+    dbg.onExceptionUnwind = function (frame) {
+        let willBeCaught = false;
+        do {
+            if (frame.script.isInCatchScope(frame.offset)) {
+                willBeCaught = true;
+                break;
+            }
+            frame = frame.older;
+        } while (frame != null);
+        assertEq(willBeCaught, mustBeCaught[index++]);
+    };
+
+    try {
+        g.eval(string);
+    } catch (ex) {}
+    assertEq(index, mustBeCaught.length);
+}
+
+// Should correctly detect catch blocks
+test("throw new Error();", [false]);
+test("try { throw new Error(); } catch (e) {}", [true]);
+test("try { throw new Error(); } finally {}", [false, false]);
+test("try { throw new Error(); } catch (e) {} finally {}", [true]);
+
+// Source of the exception shouldn't matter
+test("(null)();", [false]);
+test("try { (null)(); } catch (e) {}", [true]);
+test("try { (null)(); } finally {}", [false, false]);
+test("try { (null)(); } catch (e) {} finally {}", [true]);
+
+// Should correctly detect catch blocks in functions
+test("function f() { throw new Error(); } f();", [false, false]);
+test("function f() { try { throw new Error(); } catch (e) {} } f();", [true]);
+test("function f() { try { throw new Error(); } finally {} } f();", [false, false, false]);
+test("function f() { try { throw new Error(); } catch (e) {} finally {} } f();", [true]);
+
+// Should correctly detect catch blocks in evals
+test("eval('throw new Error();')", [false, false]);
+test("eval('try { throw new Error(); } catch (e) {}');", [true]);
+test("eval('try { throw new Error(); } finally {}');", [false, false, false]);
+test("eval('try { throw new Error(); } catch (e) {} finally {}');", [true]);
+
+// Should correctly detect rethrows
+test("try { throw new Error(); } catch (e) { throw e; }", [true, false]);
+test("try { try { throw new Error(); } catch (e) { throw e; } } catch (e) {}", [true, true]);
+test("try { try { throw new Error(); } finally {} } catch (e) {}", [true, true]);
+test("function f() { try { throw new Error(); } catch (e) { throw e; } } f();", [true, false, false]);
+test("function f() { try { try { throw new Error(); } catch (e) { throw e; } } catch (e) {} } f();", [true, true]);
+test("function f() { try { try { throw new Error(); } finally {} } catch (e) {} } f();", [true, true]);
+test("eval('try { throw new Error(); } catch (e) { throw e; }')", [true, false, false]);
+test("eval('try { try { throw new Error(); } catch (e) { throw e; } } catch (e) {}')", [true, true]);
+
+// Should correctly detect catch blocks across frame boundaries
+test("function f() { throw new Error(); } try { f(); } catch (e) {}", [true, true]);
+test("function f() { throw new Error(); } try { f(); } catch (e) { throw e; }", [true, true, false]);
+test("try { eval('throw new Error()'); } catch (e) {}", [true, true]);
+test("try { eval('throw new Error()'); } catch (e) { throw e; }", [true, true, false]);
+
+// Should correctly detect catch blocks just before and just after throws
+test("throw new Error; try {} catch (e) {}", [false]);
+test("try {} catch (e) {} throw new Error();", [false]);