Fix some incorrect NNBD tests.

Closes dart-lang/sdk#39814
Closes dart-lang/sdk#39823
Closes dart-lang/sdk#39816

Change-Id: I5015d5cb43b27a555360423cc9567c5880c948e3
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/128777
Reviewed-by: Erik Ernst <[email protected]>

Author: leafpetersen

tests/language/nnbd/static_errors/not_assigned_local_initializer_test.dart

@@ -15,18 +15,19 @@ void main() {
   int v; v; //# 01: compile-time error
   int v; //# 02: ok
   int v = 0; v; //# 03: ok
-  late int v; v; //# 04: ok
+  late int v; v; //# 04: compile-time error
   late int v = 0; v; //# 05: ok
   int? v; v; //# 06: ok
   int? v = 0; v; //# 07: ok
-
+  f<int?>(null);
+  f<int>(0);
 }
 
 f<T>(T a) {
   T v; v; //# 08: compile-time error
   T v; //# 09: ok
   T v = a; v; //# 10: ok
-  late T v; v; //# 11: ok
+  late T v; v; //# 11: compile-time error
   late T v = a; v; //# 12: ok
   T? v; v; //# 13: ok
   T? v = a; v; //# 14: ok

tests/language/nnbd/static_errors/unchecked_use_of_nullable_test.dart

@@ -44,7 +44,7 @@ void main() async {
   while (cond) {} //# 27: compile-time error
   for (;cond;) {} //# 28: compile-time error
   do {} while (cond); //# 29: compile-time error
-  cond!; //# 30: ok
+  cond!; //# 30: runtime error
   cond ?? null; //# 31: ok
   cond == null; //# 32: ok
   cond != null; //# 33: ok
@@ -102,7 +102,7 @@ void typeParametersNullableBounds<IQ extends int?, BQ extends bool?, LQ extends
   while (cond) {} //# 71: compile-time error
   for (;cond;){} //# 72: compile-time error
   do {} while (cond); //# 73: compile-time error
-  cond!; //# 74: ok
+  cond!; //# 74: runtime error
   cond ?? null; //# 75: ok
   cond == null; //# 76: ok
   cond != null; //# 77: ok
@@ -153,7 +153,7 @@ void typeParametersNullableUses<I extends int, B extends bool, L extends List, F
   while (cond) {} //# 111: compile-time error
   for (;cond;) {} //# 112: compile-time error
   do {} while (cond); //# 113: compile-time error
-  cond!; //# 114: ok
+  cond!; //# 114: runtime error
   cond ?? null; //# 115: ok
   cond == null; //# 116: ok
   cond != null; //# 117: ok

tests/language/nnbd/syntax/class_member_declarations_test.dart

@@ -76,5 +76,5 @@ abstract class B {
 main() {
   A? a;
   String? s = '';
-  a?..foo().length..x27 = s!..toString().length;
+  a?..foo().length..x27 = s!.toString().length;
 }