Add more tests for for (async of edge-cases (#2983)

tc39 · May 7, 2021 · 9da1d61 · 9da1d61
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diff --git a/test/language/statements/for-of/head-lhs-async-escaped.js b/test/language/statements/for-of/head-lhs-async-escaped.js
@@ -0,0 +1,18 @@
+// Copyright (C) 2021 Stuart Cook. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-for-in-and-for-of-statements
+description: >
+  The left-hand-side of a for-of loop may be the identifier `async` written
+  with an escape sequence.
+info: |
+  ForInOfStatement[Yield, Await, Return] :
+    for ( [lookahead ∉ { let, async of }] LeftHandSideExpression[?Yield, ?Await] of AssignmentExpression[+In, ?Yield, ?Await] ) Statement[?Yield, ?Await, ?Return]
+---*/
+
+let async;
+
+for (\u0061sync of [7]);
+
+assert.sameValue(async, 7);
diff --git a/test/language/statements/for-of/head-lhs-async-parens.js b/test/language/statements/for-of/head-lhs-async-parens.js
@@ -0,0 +1,18 @@
+// Copyright (C) 2021 Stuart Cook. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-for-in-and-for-of-statements
+description: >
+  The left-hand-side of a for-of loop may be the identifier `async`
+  surrounded by parentheses.
+info: |
+  ForInOfStatement[Yield, Await, Return] :
+    for ( [lookahead ∉ { let, async of }] LeftHandSideExpression[?Yield, ?Await] of AssignmentExpression[+In, ?Yield, ?Await] ) Statement[?Yield, ?Await, ?Return]
+---*/
+
+let async;
+
+for ((async) of [7]);
+
+assert.sameValue(async, 7);