1 files changed, 59 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/module-code/top-level-await/await-expr-resolution.js b/js/src/tests/test262/language/module-code/top-level-await/await-expr-resolution.js
new file mode 100644
index 0000000000..55b0768053
--- /dev/null
+++ b/js/src/tests/test262/language/module-code/top-level-await/await-expr-resolution.js
@@ -0,0 +1,59 @@
+// |reftest| shell-option(--enable-top-level-await) skip-if(!xulRuntime.shell) module async -- requires shell-options
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: >
+  AwaitExpression Resolutions
+info: |
+  ModuleItem:
+    StatementListItem[~Yield, +Await, ~Return]
+
+  ...
+
+  UnaryExpression[Yield, Await]
+    void UnaryExpression[?Yield, ?Await]
+    [+Await]AwaitExpression[?Yield]
+
+  AwaitExpression[Yield]:
+    await UnaryExpression[?Yield, +Await]
+esid: prod-AwaitExpression
+flags: [module, async]
+features: [top-level-await]
+---*/
+
+var x;
+
+x = await 42;
+assert.sameValue(x, 42, 'number');
+
+x = await '';
+assert.sameValue(x, '', 'string');
+
+var s = Symbol();
+x = await s;
+assert.sameValue(x, s, 'symbol');
+
+x = await false;
+assert.sameValue(x, false, 'false');
+
+x = await true;
+assert.sameValue(x, true, 'true');
+
+x = await NaN;
+assert.sameValue(x, NaN, 'NaN');
+
+x = await null;
+assert.sameValue(x, null, 'null');
+
+x = await undefined;
+assert.sameValue(x, undefined, 'undefined');
+
+var obj = {};
+x = await obj;
+assert.sameValue(x, obj, 'object');
+
+x = await Promise.resolve(1).then(v => v * 2).then(v => v * 3);
+assert.sameValue(x, 6, 'promise');
+
+$DONE();