Test internal methods of module namespace objects with indices

test/language/module-code/export-expname-binding-index.js

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+// Copyright (C) 2021 Alexey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-module-namespace-exotic-objects
+description: >
+  Internal methods of module namespace exotic objects are correct
+  with non-Identifier bindings that are integer indices.
+info: |
+  [[HasProperty]] ( P )
+
+  [...]
+  3. If P is an element of exports, return true.
+  4. Return false.
+
+  [[Get]] ( P, Receiver )
+
+  [...]
+  13. Return ? targetEnv.GetBindingValue(binding.[[BindingName]], true).
+
+  [[Set]] ( P, V, Receiver )
+
+  1. Return false.
+
+  [[Delete]] ( P )
+
+  [...]
+  4. If P is an element of exports, return false.
+  5. Return true.
+flags: [module]
+features: [arbitrary-module-namespace-names, Reflect]
+---*/
+import * as ns from "./export-expname-binding-index_FIXTURE.js";
+
+assert.sameValue(ns[0], 0);
+assert.sameValue(Reflect.get(ns, 1), 1);
+assert.sameValue(ns[2], undefined);
+
+assert.throws(TypeError, () => { ns[0] = 1; });
+assert(!Reflect.set(ns, 1, 1));
+assert.throws(TypeError, () => { ns[2] = 2; });
+
+assert(0 in ns);
+assert(Reflect.has(ns, 1));
+assert(!(2 in ns));
+
+assert.throws(TypeError, () => { delete ns[0]; });
+assert(!Reflect.deleteProperty(ns, 1));
+assert(delete ns[2]);

test/language/module-code/export-expname-binding-index_FIXTURE.js

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+// Copyright (C) 2021 Alexey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+var a = 0;
+var b = 1;
+export { a as "0", b as "1" };