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-rw-r--r--js/src/jit-test/tests/debug/Object-getErrorMessageName.js29
1 files changed, 29 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Object-getErrorMessageName.js b/js/src/jit-test/tests/debug/Object-getErrorMessageName.js
new file mode 100644
index 000000000..bea9aad91
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Object-getErrorMessageName.js
@@ -0,0 +1,29 @@
+// Debugger.Object.prototype.getErrorMessageName returns the error message name
+// associated with some error object.
+
+var g = newGlobal();
+var dbg = new Debugger();
+var gw = dbg.addDebuggee(g);
+
+assertEq(gw.executeInGlobal("(42).toString(0)").throw.errorMessageName, "JSMSG_BAD_RADIX");
+
+// Custom errors have no error message name.
+assertEq(gw.executeInGlobal("throw new Error()").throw.errorMessageName, undefined);
+
+// Ensure that the method works across globals.
+g.eval(`var g = newGlobal();
+ g.eval('var err; try { (42).toString(0); } catch (e) { err = e; }');
+ var err2 = g.err;`);
+assertEq(gw.executeInGlobal("throw err2").throw.errorMessageName, "JSMSG_BAD_RADIX");
+
+// Ensure that non-error objects return undefined.
+const Args = [
+ "1",
+ "'blah'",
+ "({})",
+ "[]",
+ "() => 1"
+]
+
+for (let arg of Args)
+ assertEq(gw.executeInGlobal(`${arg}`).return.errorMessageName, undefined);