Tests for `export * as ns from 'foo'` syntax (#1498)

test/language/module-code/namespace/internals/get-nested-namespace-dflt-skip-prod-end_FIXTURE.js

+// Copyright (C) 2018 Valerie Young. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+export var productionOther = null;
+export default null;

test/language/module-code/namespace/internals/get-nested-namespace-dflt-skip-prod_FIXTURE.js

+// Copyright (C) 2018 Valerie Young. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+export * as productionns2 from './get-nested-namespace-dflt-skip-prod-end_FIXTURE.js';

test/language/module-code/namespace/internals/get-nested-namespace-dflt-skip.js

+// Copyright (C) 2018 Valerie Young. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: >
+  Default exports are not included in an imported module namespace object when a namespace object is created.
+esid: sec-module-namespace-exotic-objects-get-p-receiver
+info: |
+  [...]
+  6. Let binding be ! m.ResolveExport(P, « »).
+  7. Assert: binding is a ResolvedBinding Record.
+  8. Let targetModule be binding.[[Module]].
+  9. Assert: targetModule is not undefined.
+  10. If binding.[[BindingName]] is "*namespace*", then
+  11. Return ? GetModuleNamespace(targetModule).
+
+  Runtime Semantics: GetModuleNamespace
+  [...]
+    3. If namespace is undefined, then
+       a. Let exportedNames be ? module.GetExportedNames(« »).
+       b. Let unambiguousNames be a new empty List.
+       c. For each name that is an element of exportedNames,
+          i. Let resolution be ? module.ResolveExport(name, « », « »).
+          ii. If resolution is null, throw a SyntaxError exception.
+          iii. If resolution is not "ambiguous", append name to
+               unambiguousNames.
+       d. Let namespace be ModuleNamespaceCreate(module, unambiguousNames).
+  [...]
+flags: [module, export-star-as-namespace-from-module]
+---*/
+
+import * as namedns1 from './get-nested-namespace-dflt-skip-named_FIXTURE.js';
+import * as productionns1 from './get-nested-namespace-dflt-skip-prod_FIXTURE.js';
+
+assert('namedOther' in namedns1.namedns2);
+assert.sameValue(
+  'default' in namedns1.namedns2, false, 'default specified via identifier'
+);
+
+assert('productionOther' in productionns1.productionns2);
+assert.sameValue(
+  'default' in productionns1.productionns2, false, 'default specified via dedicated production'
+);

test/language/module-code/namespace/internals/get-nested-namespace-props-nrml-1_FIXTURE.js

+// Copyright (C) 2018 Valerie Young. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+export * as exportns from './get-nested-namespace-props-nrml-2_FIXTURE.js';

test/language/module-code/namespace/internals/get-nested-namespace-props-nrml-2_FIXTURE.js

+// Copyright (C) 2018 Valerie Young. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+var notExportedVar;
+let notExportedLet;
+const notExportedConst = null;
+function notExportedFunc() {}
+function* notExportedGen() {}
+class notExportedClass {}
+
+var starBindingId;
+
+export var starAsVarDecl;
+export let starAsLetDecl;
+export const starAsConstDecl = null;
+export function starAsFuncDecl() {}
+export function* starAsGenDecl() {}
+export class starAsClassDecl {}
+export { starAsBindingId };
+export { starAsBindingId as starIdName };
+export { starAsIndirectIdName } from './get-nested-namespace-props-nrml-3_FIXTURE.js';
+export { starAsIndirectIdName as starAsIndirectIdName2 } from './get-nested-namespace-props-nrml-3_FIXTURE.js';
+export * as namespaceBinding from './get-nested-namespace-props-nrml-3_FIXTURE.js';;

test/language/module-code/namespace/internals/get-nested-namespace-props-nrml-3_FIXTURE.js

+// Copyright (C) 2016 Valerie Young. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+export var indirectIdName;
+export var starIndirectIdName;

test/language/module-code/namespace/internals/get-nested-namespace-props-nrml.js

+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: >
+    Module namespace object reports properties for all ExportEntries of all
+    dependencies.
+esid: sec-moduledeclarationinstantiation
+info: |
+  [...]
+  12. For each ImportEntry Record in in module.[[ImportEntries]], do
+      a. Let importedModule be ? HostResolveImportedModule(module,
+         in.[[ModuleRequest]]).
+      b. If in.[[ImportName]] is "*", then
+         i. Let namespace be ? GetModuleNamespace(importedModule).
+  [...]
+
+  Runtime Semantics: GetModuleNamespace
+    3. If namespace is undefined, then
+       a. Let exportedNames be ? module.GetExportedNames(« »).
+       b. Let unambiguousNames be a new empty List.
+       c. For each name that is an element of exportedNames,
+          i. Let resolution be ? module.ResolveExport(name, « », « »).
+          ii. If resolution is null, throw a SyntaxError exception.
+          iii. If resolution is not "ambiguous", append name to
+               unambiguousNames.
+       d. Let namespace be ModuleNamespaceCreate(module, unambiguousNames).
+flags: [module, export-star-as-namespace-from-module]
+---*/
+
+import * as ns from './get-nested-namespace-props-nrml-1_FIXTURE.js';
+
+// Export entries defined by a re-exported as exportns module
+assert('starAsVarDecl' in ns.exportns, 'starssVarDecl');
+assert('starAsLetDecl' in ns.exportns, 'starSsLetDecl');
+assert('starAsConstDecl' in ns.exportns, 'starSsConstDecl');
+assert('starAsFuncDecl' in ns.exportns, 'starAsFuncDecl');
+assert('starAsGenDecl' in ns.exportns, 'starAsGenDecl');
+assert('starAsClassDecl' in ns.exportns, 'starAsClassDecl');
+assert('starAsBindingId' in ns.exportns, 'starAsBindingId');
+assert('starAsIdName' in ns.exportns, 'starAsIdName');
+assert('starAsIndirectIdName' in ns.exportns, 'starAsIndirectIdName');
+assert('starAsIndirectIdName2' in ns.exportns, 'starAsIndirectIdName2');
+assert('namespaceBinding' in ns.exportns, 'namespaceBinding');
+
+// Bindings that were not exported from any module
+assert.sameValue('nonExportedVar' in ns.exportns, false, 'nonExportedVar');
+assert.sameValue('nonExportedLet' in ns.exportns, false, 'nonExportedLet');
+assert.sameValue('nonExportedConst' in ns.exportns, false, 'nonExportedConst');
+assert.sameValue('nonExportedFunc' in ns.exportns, false, 'nonExportedFunc');
+assert.sameValue('nonExportedGen' in ns.exportns, false, 'nonExportedGen');
+assert.sameValue('nonExportedClass' in ns.exportns, false, 'nonExportedClass');

test/language/module-code/parse-err-export-dflt-expr.js

@@ -7,8 +7,9 @@ esid: sec-exports
 info: |
     ExportDeclaration:
       export * FromClause;
-      export ExportClause FromClause;
-      export ExportClause;
+      export * as IdentifierName FromClause;
+      export NamedExports FromClause;
+      export NamedExports;
       export VariableStatement
       export Declaration
       export default HoistableDeclaration[Default]

test/language/module-code/parse-err-invoke-anon-fun-decl.js

@@ -6,9 +6,10 @@ description: >
 esid: sec-exports
 info: |
     ExportDeclaration:
-      export * FromClause;
-      export ExportClause FromClause;
-      export ExportClause;
+      export * FromClause
+      export * as IdentifierName FromClause;
+      export NamedExports FromClause;
+      export NamedExports;
       export VariableStatement
       export Declaration
       export default HoistableDeclaration[Default]

test/language/module-code/parse-err-invoke-anon-gen-decl.js

@@ -8,8 +8,9 @@ esid: sec-exports
 info: |
     ExportDeclaration:
       export * FromClause;
-      export ExportClause FromClause;
-      export ExportClause;
+      export * as IdentifierName FromClause;
+      export NamedExports FromClause;
+      export NamedExports;
       export VariableStatement
       export Declaration
       export default HoistableDeclaration[Default]

test/language/module-code/parse-err-semi-dflt-expr.js

@@ -8,8 +8,9 @@ esid: sec-exports
 info: |
     ExportDeclaration:
       export * FromClause;
-      export ExportClause FromClause;
-      export ExportClause;
+      export * as IdentifierName FromClause;
+      export NamedExports FromClause;
+      export NamedExports;
       export VariableStatement
       export Declaration
       export default HoistableDeclaration[Default]

test/language/module-code/parse-err-semi-export-star.js

@@ -7,8 +7,9 @@ esid: sec-exports
 info: |
     ExportDeclaration:
       export * FromClause;
-      export ExportClause FromClause;
-      export ExportClause;
+      export * as IdentifierName FromClause;
+      export NamedExports FromClause;
+      export NamedExports;
       export VariableStatement
       export Declaration
       export default HoistableDeclaration[Default]
@@ -17,7 +18,7 @@ info: |
 negative:
   phase: parse
   type: SyntaxError
-flags: [module]
+flags: [module, export-star-as-namespace-from-module]
 ---*/
 
 throw "Test262: This statement should not be evaluated.";

test/language/module-code/parse-err-semi-name-space-export.js

+// Copyright (C) 2018 Valerie Young. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: >
+    "export NameSpaceExport FromClause" declarations require a trailing semicolon
+    or LineTerminator
+esid: sec-exports
+info: |
+    ExportDeclaration:
+      export * FromClause;
+      export * as IdentifierName FromClause;
+      export NamedExports FromClause;
+      export NamedExports;
+      export VariableStatement
+      export Declaration
+      export default HoistableDeclaration[Default]
+      export default ClassDeclaration[Default]
+      export default [lookahead ∉ { function, class }] AssignmentExpression[In];
+negative:
+  phase: parse
+  type: SyntaxError
+flags: [module, export-star-as-namespace-from-module]
+---*/
+
+throw "Test262: This statement should not be evaluated.";
+
+export * as namespace from './parse-err-semi-name-space-export.js' null;

test/language/module-code/parse-err-semi-export-clause-from.js → test/language/module-code/parse-err-semi-named-export-from.js

@@ -2,14 +2,15 @@
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
 description: >
-    "export ExportClause FromClause" declarations require a trailing semicolon
+    "export NamedExports FromClause" declarations require a trailing semicolon
     or LineTerminator
 esid: sec-exports
 info: |
     ExportDeclaration:
       export * FromClause;
-      export ExportClause FromClause;
-      export ExportClause;
+      export * as IdentifierName FromClause;
+      export NamedExports FromClause;
+      export NamedExports;
       export VariableStatement
       export Declaration
       export default HoistableDeclaration[Default]

test/language/module-code/parse-err-semi-export-clause.js → test/language/module-code/parse-err-semi-named-export.js

@@ -2,14 +2,15 @@
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
 description: >
-    "export ExportClause" declarations require a trailing semicolon or
+    "export NamedExports" declarations require a trailing semicolon or
     LineTerminator
 esid: sec-exports
 info: |
     ExportDeclaration:
       export * FromClause;
-      export ExportClause FromClause;
-      export ExportClause;
+      export * as IdentifierName FromClause;
+      export NamedExports FromClause;
+      export NamedExports;
       export VariableStatement
       export Declaration
       export default HoistableDeclaration[Default]

test/language/module-code/parse-export-empty.js

 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
-description: An ExportClause does not require an ExportsList.
+description: A NamedExport does not require an ExportsList.
 esid: sec-parsemodule
 info: |
     ExportDeclaration:
       export * FromClause;
-      export ExportClause FromClause;
-      export ExportClause;
+      export * as IdentifierName FromClause;
+      export NamedExports FromClause;
+      export NamedExports;
       export VariableStatement
       export Declaration
       export default HoistableDeclaration[Default]
       export default ClassDeclaration[Default]
       export default [lookahead ∉ { function, class }] AssignmentExpression[In];
 
-    ExportClause:
+    NamedExports:
       { }
       { ExportsList }
       { ExportsList , }