From 0ea69c7864a16c28d3b1849397ff569e9725cc08 Mon Sep 17 00:00:00 2001
From: "Benjamin E. Coe" <bencoe@google.com>
Date: Wed, 18 Dec 2019 11:35:28 -0500
Subject: [PATCH] feat: regression tests for optional call (#2429)

* feat: regression tests for optional call

* chore: address code review

* chore: fix assertion

* chore: set context rather than return context
---
 .../new-target-optional-call.js               | 31 +++++++++++++++++++
 .../super-property-optional-call.js           | 30 ++++++++++++++++++
 2 files changed, 61 insertions(+)
 create mode 100644 test/language/expressions/optional-chaining/new-target-optional-call.js
 create mode 100644 test/language/expressions/optional-chaining/super-property-optional-call.js

diff --git a/test/language/expressions/optional-chaining/new-target-optional-call.js b/test/language/expressions/optional-chaining/new-target-optional-call.js
new file mode 100644
index 0000000000..2ae2ea6619
--- /dev/null
+++ b/test/language/expressions/optional-chaining/new-target-optional-call.js
@@ -0,0 +1,31 @@
+// Copyright 2019 Google, LLC.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: prod-OptionalExpression
+description: >
+  optional call invoked on new.target should be equivalent to call
+info: |
+  OptionalExpression
+    MemberExpression OptionalChain
+      NewTarget OptionalChain
+features: [optional-chaining]
+includes: [fnGlobalObject.js]
+---*/
+
+const newTargetContext = (function() { return this; })();
+
+let called = false;
+// should be set to 'undefined' or global context, depending on whether
+// mode is strict or sloppy.
+let context = null;
+function Base() {
+  called = true;
+  context = this;
+}
+function Foo(blerg) {
+  new.target?.();
+}
+
+Reflect.construct(Foo, [], Base);
+assert(context === newTargetContext);
+assert.sameValue(called, true);
diff --git a/test/language/expressions/optional-chaining/super-property-optional-call.js b/test/language/expressions/optional-chaining/super-property-optional-call.js
new file mode 100644
index 0000000000..cd572ade4a
--- /dev/null
+++ b/test/language/expressions/optional-chaining/super-property-optional-call.js
@@ -0,0 +1,30 @@
+// Copyright 2019 Google, LLC.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: prod-OptionalExpression
+description: >
+  optional call invoked on super method should be equivalent to call
+info: |
+  OptionalExpression
+    MemberExpression OptionalChain
+      SuperProperty OptionalChain
+features: [optional-chaining]
+---*/
+
+let called = false;
+let context;
+class Base {
+    method() {
+      called = true;
+      context = this;
+    }
+}
+class Foo extends Base {
+    method() {
+      super.method?.();
+    }
+}
+const foo = new Foo();
+foo.method();
+assert(foo === context);
+assert.sameValue(called, true);