Issue 24599. Fix for requesting navigation for directives.

pkg/analysis_server/test/analysis/notification_navigation_test.dart

Index: pkg/analysis_server/test/analysis/notification_navigation_test.dart
diff --git a/pkg/analysis_server/test/analysis/notification_navigation_test.dart b/pkg/analysis_server/test/analysis/notification_navigation_test.dart
index 4accf976e9c9bc28f9223957af12414bd009a5e5..5e66eca77f7f05dc3bd2bbfdfe7f91356e16410c 100644
--- a/pkg/analysis_server/test/analysis/notification_navigation_test.dart
+++ b/pkg/analysis_server/test/analysis/notification_navigation_test.dart
@@ -26,6 +26,7 @@ class AbstractNavigationTest extends AbstractAnalysisTest {
 
   NavigationRegion testRegion;
   List<int> testTargetIndexes;
+  List<NavigationTarget> testTargets;
   NavigationTarget testTarget;
 
   /**
@@ -33,8 +34,6 @@ class AbstractNavigationTest extends AbstractAnalysisTest {
    * at [offset] and with the given [length].
    */
   void assertHasFileTarget(String file, int offset, int length) {
-    List<NavigationTarget> testTargets =
-        testTargetIndexes.map((int index) => targets[index]).toList();
     for (NavigationTarget target in testTargets) {
       if (targetFiles[target.fileIndex] == file &&
           target.offset == offset &&
@@ -167,6 +166,7 @@ class AbstractNavigationTest extends AbstractAnalysisTest {
         }
         testRegion = region;
         testTargetIndexes = region.targets;
+        testTargets = testTargetIndexes.map((i) => targets[i]).toList();
         return;
       }
     }