Migrate "s" directory language tests off @compile-error.

The "@compile-error" comment is an old not-great way of defining static
error tests.

See: https://github.com/dart-lang/sdk/issues/45634
Change-Id: I6218c6ea339b6c19c1495b1db9b2da3fe1654718
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/296440
Commit-Queue: Jake Macdonald <jakemac@google.com>
Auto-Submit: Bob Nystrom <rnystrom@google.com>
Reviewed-by: Jake Macdonald <jakemac@google.com>

tests/language/script/script2_test.dart

@@ -4,12 +4,9 @@
 
 /// Part file has library and import directives.
 
-/*@compile-error=unspecified*/
-// TODO(rnystrom): Using the above tag instead of making this a static error
-// test because the error is reported in the part file and not in this file.
-// Static error tests only support errors reported in the main test file itself.
-part "script2_part.dart";
+// TODO(rnystrom): Using a multitest instead of making this a static error test
+// because the error is reported in the part file and not in this file. Once
+// issue #44990 is fixed, this can be a static error test.
+part "script2_part.dart"; //# 01: compile-time error
 
-main() {
-  print("Should not reach here.");
-}
+main() {}

tests/language/setter/setter4_test.dart

@@ -10,7 +10,9 @@ class A {
   }
 
   void set a(var val) {
-    /*@compile-error=unspecified*/
+    //     ^
+    // [analyzer] COMPILE_TIME_ERROR.DUPLICATE_DEFINITION
+    // [cfe] 'a' is already declared in this scope.
     int i = val;
   }
 }

tests/language/static/initializer_type_error_test.dart

@@ -4,7 +4,10 @@
 
 import "package:expect/expect.dart";
 
-int x = "milou";  /*@compile-error=unspecified*/
+int x = "milou";
+//      ^^^^^^^
+// [analyzer] COMPILE_TIME_ERROR.INVALID_ASSIGNMENT
+// [cfe] A value of type 'String' can't be assigned to a variable of type 'int'.
 
 bool readXThrows() {
   try {

tests/language/super/additional_interface_adds_optional_args_supercall_test.dart

@@ -21,7 +21,11 @@ class C extends B {
   void foo([x]) {
     // But it is a problem to try to pass `x` along to super, since the super
     // method is A.foo.
-    super.foo(/*@compile-error=unspecified*/ x);
+    super.foo(x);
+    //       ^
+    // [cfe] Too many positional arguments: 0 allowed, but 1 found.
+    //        ^
+    // [analyzer] COMPILE_TIME_ERROR.EXTRA_POSITIONAL_ARGUMENTS
   }
 }
 

tests/language/switch/empty_block_case_test.dart

@@ -17,7 +17,10 @@ class EmptyBlockCaseTest {
   static testMain() {
     var exception = null;
     switch (1) {
-      case 1: /*@compile-error=unspecified*/
+      case 1:
+//    ^^^^
+// [analyzer] COMPILE_TIME_ERROR.SWITCH_CASE_COMPLETES_NORMALLY
+// [cfe] Switch case may fall through to the next case.
         {}
       case 2:
         Expect.equals(true, false);

tests/language_2/script/script2_test.dart

@@ -6,12 +6,9 @@
 
 /// Part file has library and import directives.
 
-/*@compile-error=unspecified*/
-// TODO(rnystrom): Using the above tag instead of making this a static error
-// test because the error is reported in the part file and not in this file.
-// Static error tests only support errors reported in the main test file itself.
-part "script2_part.dart";
+// TODO(rnystrom): Using a multitest instead of making this a static error test
+// because the error is reported in the part file and not in this file. Once
+// issue #44990 is fixed, this can be a static error test.
+part "script2_part.dart"; //# 01: compile-time error
 
-main() {
-  print("Should not reach here.");
-}
+main() {}

tests/language_2/setter/setter4_test.dart

@@ -12,7 +12,9 @@ class A {
   }
 
   void set a(var val) {
-    /*@compile-error=unspecified*/
+    //     ^
+    // [analyzer] COMPILE_TIME_ERROR.DUPLICATE_DEFINITION
+    // [cfe] 'a' is already declared in this scope.
     int i = val;
   }
 }

tests/language_2/static/initializer_type_error_test.dart

@@ -6,7 +6,10 @@
 
 import "package:expect/expect.dart";
 
-int x = "milou";  /*@compile-error=unspecified*/
+int x = "milou";
+//      ^^^^^^^
+// [analyzer] COMPILE_TIME_ERROR.INVALID_ASSIGNMENT
+// [cfe] A value of type 'String' can't be assigned to a variable of type 'int'.
 
 bool readXThrows() {
   try {

tests/language_2/super/additional_interface_adds_optional_args_supercall_test.dart

@@ -23,7 +23,11 @@ class C extends B {
   void foo([x]) {
     // But it is a problem to try to pass `x` along to super, since the super
     // method is A.foo.
-    super.foo(/*@compile-error=unspecified*/ x);
+    super.foo(x);
+    //       ^
+    // [cfe] Too many positional arguments: 0 allowed, but 1 found.
+    //        ^
+    // [analyzer] COMPILE_TIME_ERROR.EXTRA_POSITIONAL_ARGUMENTS
   }
 }
 

tests/language_2/switch/empty_block_case_test.dart

@@ -16,7 +16,10 @@ import "package:expect/expect.dart";
 class EmptyBlockCaseTest {
   static testMain() {
     switch (1) {
-      case 1: /*@compile-error=unspecified*/
+      case 1:
+//    ^^^^
+// [analyzer] COMPILE_TIME_ERROR.CASE_BLOCK_NOT_TERMINATED
+// [cfe] Switch case may fall through to the next case.
         {}
       case 2:
         Expect.equals(true, false);