Completions with exact prefix should be prioritized - fixes #23099

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

Index: pkg/analysis_server/test/services/completion/completion_test_util.dart
diff --git a/pkg/analysis_server/test/services/completion/completion_test_util.dart b/pkg/analysis_server/test/services/completion/completion_test_util.dart
index 45eb0fac6d3cb1a5854e9ad15f5681eaeebe7fd5..063af389e056cb0753678e1f259b1ec6f8709a3b 100644
--- a/pkg/analysis_server/test/services/completion/completion_test_util.dart
+++ b/pkg/analysis_server/test/services/completion/completion_test_util.dart
@@ -1357,7 +1357,8 @@ abstract class AbstractSelectorSuggestionTest extends AbstractCompletionTest {
       //assertSuggestImportedTopLevelVar('T3', 'int', COMPLETION_RELEVANCE_LOW);
       assertNotSuggested('_T4');
       assertSuggestLocalTopLevelVar('T5', 'int');
-      assertSuggestLocalTopLevelVar('_T6', null);
+      assertSuggestLocalTopLevelVar('_T6', null,
+          relevance: DART_RELEVANCE_DEFAULT);
       assertNotSuggested('==');
       assertSuggestLocalGetter('T7', 'String');
       assertSuggestLocalSetter('T8');
@@ -3473,7 +3474,8 @@ abstract class AbstractSelectorSuggestionTest extends AbstractCompletionTest {
         expect(getterF.element.isDeprecated, isTrue);
         expect(getterF.element.isPrivate, isFalse);
       }
-      CompletionSuggestion getterG = assertSuggestLocalGetter('_g', null);
+      CompletionSuggestion getterG = assertSuggestLocalGetter('_g', null,
+          relevance: DART_RELEVANCE_DEFAULT);
       if (getterG != null) {
         expect(getterG.element.isDeprecated, isFalse);
         expect(getterG.element.isPrivate, isTrue);
@@ -3528,7 +3530,8 @@ abstract class AbstractSelectorSuggestionTest extends AbstractCompletionTest {
     return computeFull((bool result) {
       expect(request.replacementOffset, completionOffset);
       expect(request.replacementLength, 0);
-      CompletionSuggestion methodA = assertSuggestLocalMethod('_a', 'A', 'Z');
+      CompletionSuggestion methodA = assertSuggestLocalMethod('_a', 'A', 'Z',
+          relevance: DART_RELEVANCE_DEFAULT);
       if (methodA != null) {
         expect(methodA.element.isDeprecated, isFalse);
         expect(methodA.element.isPrivate, isTrue);