Issue 28027. Move Null to the bottom in the Analyzer.

pkg/analyzer/test/generated/non_error_resolver_test.dart

Index: pkg/analyzer/test/generated/non_error_resolver_test.dart
diff --git a/pkg/analyzer/test/generated/non_error_resolver_test.dart b/pkg/analyzer/test/generated/non_error_resolver_test.dart
index 4e4b890828a09d8d73cc4be11d1fa03cee885e6e..525e99fd45fea2f3a3ff0224fc4b167045b66a6a 100644
--- a/pkg/analyzer/test/generated/non_error_resolver_test.dart
+++ b/pkg/analyzer/test/generated/non_error_resolver_test.dart
@@ -4993,6 +4993,18 @@ class A {
     verify([source]);
   }
 
+  test_returnOfInvalidType_async_future_int_mismatches_future_null() async {
+    Source source = addSource(r'''
+import 'dart:async';
+Future<Null> f() async {
+  return 5;
+}
+''');
+    await computeAnalysisResult(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
   test_returnOfInvalidType_dynamic() async {
     Source source = addSource(r'''
 class TypeError {}
@@ -5071,6 +5083,7 @@ void f2() { return; }
 void f3() { return null; }
 void f4() { return g1(); }
 void f5() { return g2(); }
+void f6() => throw 42;
 g1() {}
 void g2() {}
 ''');