ImportElement/ExportElement 'uri' should be the selected URI.

pkg/analyzer/test/src/task/dart_test.dart

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library analyzer.test.src.task.dart_test;
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/dart/ast/visitor.dart';
 import 'package:analyzer/dart/element/element.dart';
@@ skipping 338 matching lines @@
       expect(combinator.offset, 33);
       expect(combinator.end, 42);
       expect(combinator.shownNames, ['A', 'B']);
     }
     {
       HideElementCombinator combinator = combinators[1];
       expect(combinator.hiddenNames, ['C', 'D']);
     }
   }
 
+  test_perform_configurations_export() {
+    context.declaredVariables.define('dart.library.io', 'true');
+    context.declaredVariables.define('dart.library.html', 'true');
+    newSource('/foo.dart', '');
+    var foo_io = newSource('/foo_io.dart', '');
+    newSource('/foo_html.dart', '');
+    var testSource = newSource(
+        '/test.dart',
+        r'''
+export 'foo.dart'
+  if (dart.library.io) 'foo_io.dart'
+  if (dart.library.html) 'foo_html.dart';
+''');
+    // Perform the task.
+    computeResult(testSource, LIBRARY_ELEMENT2,
+        matcher: isBuildDirectiveElementsTask);
+    LibraryElement testLibrary = outputs[LIBRARY_ELEMENT2];
+    // Validate the export element.
+    ExportElement export = testLibrary.exports[0];
+    expect(export.exportedLibrary.source, foo_io);
+    expect(export.uri, 'foo_io.dart');
+  }
+
+  test_perform_configurations_import() {
+    context.declaredVariables.define('dart.library.io', 'true');
+    context.declaredVariables.define('dart.library.html', 'true');
+    newSource('/foo.dart', '');
+    var foo_io = newSource('/foo_io.dart', '');
+    newSource('/foo_html.dart', '');
+    var testSource = newSource(
+        '/test.dart',
+        r'''
+import 'foo.dart'
+  if (dart.library.io) 'foo_io.dart'
+  if (dart.library.html) 'foo_html.dart';
+''');
+    // Perform the task.
+    computeResult(testSource, LIBRARY_ELEMENT2,
+        matcher: isBuildDirectiveElementsTask);
+    LibraryElement testLibrary = outputs[LIBRARY_ELEMENT2];
+    // Validate the import element.
+    ImportElement import = testLibrary.imports[0];
+    expect(import.importedLibrary.source, foo_io);
+    expect(import.uri, 'foo_io.dart');
+  }
+
   test_perform_dartCoreContext() {
     List<Source> sources = newSources({'/libA.dart': ''});
     Source source = sources[0];
     // perform task
     computeResult(source, LIBRARY_ELEMENT2,
         matcher: isBuildDirectiveElementsTask);
     // prepare outputs
     LibraryElement libraryElement = outputs[LIBRARY_ELEMENT2];
     // verify that dart:core has SDK context
     {
@@ skipping 5301 matching lines @@
   /**
    * Fill [errorListener] with [result] errors in the current [task].
    */
   void _fillErrorListener(ResultDescriptor<List<AnalysisError>> result) {
     List<AnalysisError> errors = task.outputs[result] as List<AnalysisError>;
     expect(errors, isNotNull, reason: result.name);
     errorListener = new GatheringErrorListener();
     errorListener.addAll(errors);
   }
 }