Coverage: `new await ...` and `new (await ...)`. Fixes gh-1898

test/language/module-code/top-level-await/new-await-parens.js

@@ -0,0 +1,19 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: prod-AwaitExpression
+description: >
+  `new (await Constructor)` returns instance of Constructor
+flags: [module, async]
+features: [top-level-await]
+---*/
+
+assert.sameValue((new (await Number)).valueOf(), 0);
+assert.sameValue((new (await String)).valueOf(), '');
+assert.sameValue((new (await Boolean)).valueOf(), false);
+assert.sameValue((new (await Array)).length, 0);
+assert.sameValue((new (await Map)).size, 0);
+assert.sameValue((new (await Set)).size, 0);
+
+$DONE();

test/language/module-code/top-level-await/new-await-script-code.js

@@ -0,0 +1,13 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: prod-AwaitExpression
+description: >
+  await is not a keyword in script code
+features: [top-level-await]
+---*/
+
+class await {}
+
+assert.sameValue(new await instanceof await, true);

test/language/module-code/top-level-await/new-await.js

@@ -0,0 +1,17 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: prod-AwaitExpression
+description: >
+  await cannot immediately follow new in module code
+negative:
+  phase: parse
+  type: SyntaxError
+flags: [module]
+features: [top-level-await]
+---*/
+
+$DONOTEVALUATE();
+
+new await;