Check parameter types when evaluating constants.

pkg/analyzer/test/options_test.dart

Index: pkg/analyzer/test/options_test.dart
diff --git a/pkg/analyzer/test/options_test.dart b/pkg/analyzer/test/options_test.dart
index bb2ba2a596855796a8df5098af421bc3d19641e7..f335dee2cd34bfbc7ce82cc6c1bc21b52b4abf06 100644
--- a/pkg/analyzer/test/options_test.dart
+++ b/pkg/analyzer/test/options_test.dart
@@ -20,6 +20,7 @@ main() {
       expect(options.displayVersion, isFalse);
       expect(options.enableAsync, isFalse);
       expect(options.enableEnum, isFalse);
+      expect(options.enableTypeChecks, isFalse);
       expect(options.ignoreUnrecognizedFlags, isFalse);
       expect(options.log, isFalse);
       expect(options.machineFormat, isFalse);
@@ -58,6 +59,12 @@ main() {
       expect(options.enableEnum, isTrue);
     });
 
+    test('enable type checks', () {
+      CommandLineOptions options = CommandLineOptions
+          .parse(['--dart-sdk', '.', '--enable_type_cheks', 'foo.dart']);
+      expect(options.enableTypeChecks, isTrue);
+    });
+
     test('log', () {
       CommandLineOptions options = CommandLineOptions
           .parse(['--dart-sdk', '.', '--log', 'foo.dart']);