#3180. Update existing interop tests (#3276)

Author: sgrekhov

LibTest/js_interop/JS/js_A01_t10.dart

@@ -15,16 +15,13 @@
 import 'dart:js_interop';
 
 class C {
-  external int f1();
 }
 
 mixin M {
-  external int f1();
 }
 
 enum E {
   e0;
-  external int f1();
 }
 
 @JS()

LibTest/js_interop/JSExport/jsExport_A03_t02.dart

@@ -8,23 +8,40 @@
 /// member.
 ///
 /// @description Checks that if a class is annotated with  a `@JSExport`
-/// annotation with non empty `name`.
+/// annotation with non empty `name` then the value of `name` is ignored.
 /// @author [email protected]
-/// @issue 61084
+/// @issue 61084, 61289, 61291
 
 import 'dart:js_interop';
+import 'dart:js_interop_unsafe';
+import '../../../Utils/expect.dart';
+import '../js_utils.dart';
+
+String log = "";
 
 @JSExport("D")
 class C {
-//    ^
-// [analyzer] unspecified
-// [web] unspecified
   int variable = 42;
   String method(String v) => "method($v);";
   String get getter => "Some getter";
-  void set setter(bool value) {}
+  void set setter(bool value) {
+    log = "setter($value);";
+  }
 }
 
 void main() {
-  print(C);
+  var c = C();
+  var jsC = createJSInteropWrapper<C>(c);
+  globalContext["jsC"] = jsC;
+  eval(r'''
+    globalThis.v1 = globalThis.jsC.variable;
+    globalThis.v2 = globalThis.jsC.method('x');
+    globalThis.v3 = globalThis.jsC.getter;
+    globalThis.jsC.setter = false;
+
+  ''');
+  Expect.equals(42, (globalContext["v1"] as JSNumber).toDartInt);
+  Expect.equals("method(x);", (globalContext["v2"] as JSString).toDart);
+  Expect.equals("Some getter", (globalContext["v3"] as JSString).toDart);
+  Expect.equals("setter(false);", log);
 }

LibTest/js_interop/interop_A01_t12.dart

@@ -11,6 +11,7 @@
 /// @description Check that default values of an external constructor of a JS
 /// interop type are ignored.
 /// @author [email protected]
+/// @issue 61289
 
 import 'dart:js_interop';
 import '../../Utils/expect.dart';

LibTest/js_interop/interop_A07_t02.dart

@@ -13,6 +13,7 @@
 /// @description Check that default values of optional positional parameters
 /// are omitted.
 /// @author [email protected]
+/// @issue 61289
 
 import 'dart:js_interop';
 import '../../Utils/expect.dart';

LibTest/js_interop/staticInterop_A01_t03.dart

@@ -41,9 +41,6 @@ extension Ext on C {
 //        ^^^
 // [analyzer] unspecified
 // [web] unspecified
-  external String getString();
-  external int getNumber();
-  external bool getBool();
 }
 
 main() {