Fix for issue 23861: CompletionSuggestion.parameterType are now populated.

pkg/analysis_server/test/services/completion/dart/completion_contributor_util.dart

Index: pkg/analysis_server/test/services/completion/dart/completion_contributor_util.dart
diff --git a/pkg/analysis_server/test/services/completion/dart/completion_contributor_util.dart b/pkg/analysis_server/test/services/completion/dart/completion_contributor_util.dart
index 9589874826fa03ce6252c3844e662fb9c6e18f71..72a57c7d76e4e9824bb54a0a3eff8682ba408e19 100644
--- a/pkg/analysis_server/test/services/completion/dart/completion_contributor_util.dart
+++ b/pkg/analysis_server/test/services/completion/dart/completion_contributor_util.dart
@@ -110,7 +110,9 @@ abstract class DartCompletionContributorTest extends AbstractContextTest {
       bool isDeprecated: false,
       bool isPotential: false,
       String elemFile,
-      int elemOffset}) {
+      int elemOffset,
+      String paramName,
+      String paramType}) {
     CompletionSuggestion cs =
         getSuggest(completion: completion, csKind: csKind, elemKind: elemKind);
     if (cs == null) {
@@ -141,6 +143,12 @@ abstract class DartCompletionContributorTest extends AbstractContextTest {
     if (elemOffset != null) {
       expect(cs.element.location.offset, elemOffset);
     }
+    if(paramName != null) {
+      expect(cs.parameterName, paramName);
+    }
+    if(paramType != null) {
+      expect(cs.parameterType, paramType);
+    }
     return cs;
   }