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-rw-r--r--js/src/jit-test/tests/basic/iterable-error-messages.js39
1 files changed, 39 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/iterable-error-messages.js b/js/src/jit-test/tests/basic/iterable-error-messages.js
new file mode 100644
index 000000000..4d10f92b2
--- /dev/null
+++ b/js/src/jit-test/tests/basic/iterable-error-messages.js
@@ -0,0 +1,39 @@
+function assertThrowsMsg(f, msg) {
+ try {
+ f();
+ assertEq(0, 1);
+ } catch(e) {
+ assertEq(e instanceof TypeError, true);
+ assertEq(e.message, msg);
+ }
+}
+
+// For-of
+function testForOf(val) {
+ for (var x of val) {}
+}
+for (v of [{}, Math, new Proxy({}, {})]) {
+ assertThrowsMsg(() => testForOf(v), "val is not iterable");
+}
+assertThrowsMsg(() => testForOf(null), "val is null");
+assertThrowsMsg(() => { for (var x of () => 1) {}}, "() => 1 is not iterable");
+
+// Destructuring
+function testDestr(val) {
+ var [a, b] = val;
+}
+for (v of [{}, Math, new Proxy({}, {})]) {
+ assertThrowsMsg(() => testDestr(v), "val is not iterable");
+}
+assertThrowsMsg(() => testDestr(null), "val is null");
+assertThrowsMsg(() => { [a, b] = () => 1; }, "() => 1 is not iterable");
+
+// Spread
+function testSpread(val) {
+ [...val];
+}
+for (v of [{}, Math, new Proxy({}, {})]) {
+ assertThrowsMsg(() => testSpread(v), "val is not iterable");
+}
+assertThrowsMsg(() => testSpread(null), "val is null");
+assertThrowsMsg(() => { [...() => 1]; }, "() => 1 is not iterable");