fix tests as per acorn upgrade

lib/6to5/transformation/modules/system.js

@@ -33,22 +33,22 @@ SystemFormatter.prototype._exportsWildcard = function (objectIdentifier) {
   var right = objectIdentifier;
 
   var block = t.blockStatement([
-    this._makeExportStatements([leftIdentifier, valIdentifier])
+    this.buildExportCall(leftIdentifier, valIdentifier)
   ]);
 
   return t.forInStatement(left, right, block);
 };
 
 SystemFormatter.prototype._exportsAssign = function (id, init, isExpression) {
-  return this.buildExportCall(id.name, init, true);
+  return this.buildExportCall(t.literal(id.name), init, true);
 };
 
 SystemFormatter.prototype.remapExportAssignment = function (node) {
-  return this.buildExportCall(node.left.name, node);
+  return this.buildExportCall(t.literal(node.left.name), node);
 };
 
 SystemFormatter.prototype.buildExportCall = function (id, init, isStatement) {
-  var call = t.callExpression(this.exportIdentifier, [t.literal(id), init]);
+  var call = t.callExpression(this.exportIdentifier, [id, init]);
   if (isStatement) {
     return t.expressionStatement(call);
   } else {

test/fixtures/generation/harmony-edgecase/export-default-declaration/expected.js

@@ -1 +1 @@
-export default function a() {};
+export default function a() {}

test/fixtures/generation/types/ExportDeclaration-ExportSpecifier-ExportBatchSpecifier/actual.js

@@ -4,8 +4,8 @@ export default [];
 export default foo;
 export default function () {};
 export default class {};
-export default function foo() {};
-export default class Foo {};
+export default function foo() {}
+export default class Foo {}
 export * from "foo";
 export { foo } from "foo";
 export { foo, bar } from "foo";

test/fixtures/generation/types/ExportDeclaration-ExportSpecifier-ExportBatchSpecifier/expected.js

@@ -4,8 +4,8 @@ export default [];
 export default foo;
 export default function () {};
 export default class {};
-export default function foo() {};
-export default class Foo {};
+export default function foo() {}
+export default class Foo {}
 export * from "foo";
 export { foo } from "foo";
 export { foo, bar } from "foo";