1 files changed, 29 insertions, 0 deletions
diff --git a/js/src/tests/non262/reflect-parse/object-spread.js b/js/src/tests/non262/reflect-parse/object-spread.js
new file mode 100644
index 0000000000..a4b269c409
--- /dev/null
+++ b/js/src/tests/non262/reflect-parse/object-spread.js
@@ -0,0 +1,29 @@
+// |reftest| skip-if(!xulRuntime.shell)
+
+function property(key, value = key, shorthand = key === value) {
+    return { key, value, shorthand };
+}
+
+function test() {
+    // Any expression can be spreaded.
+    assertExpr("({...x})", objExpr([spread(ident("x"))]));
+    assertExpr("({...f()})", objExpr([spread(callExpr(ident("f"), []))]));
+    assertExpr("({...123})", objExpr([spread(lit(123))]));
+
+    // Multiple spread expression are allowed.
+    assertExpr("({...x, ...obj.p})", objExpr([spread(ident("x")), spread(dotExpr(ident("obj"), ident("p")))]));
+
+    // Spread expression can appear anywhere in an object literal.
+    assertExpr("({p, ...x})", objExpr([property(ident("p")), spread(ident("x"))]));
+    assertExpr("({p: a, ...x})", objExpr([property(ident("p"), ident("a")), spread(ident("x"))]));
+    assertExpr("({...x, p: a})", objExpr([spread(ident("x")), property(ident("p"), ident("a"))]));
+
+    // Trailing comma after spread expression is allowed.
+    assertExpr("({...x,})", objExpr([spread(ident("x"))]));
+
+    // __proto__ is not special in spread expressions.
+    assertExpr("({...__proto__})", objExpr([spread(ident("__proto__"))]));
+    assertExpr("({...__proto__, ...__proto__})", objExpr([spread(ident("__proto__")), spread(ident("__proto__"))]));
+}
+
+runtest(test);