Fix parseAssignableSelector() tests and parse '?.' with Fasta.

pkg/analyzer/test/generated/parser_fasta_test.dart

Index: pkg/analyzer/test/generated/parser_fasta_test.dart
diff --git a/pkg/analyzer/test/generated/parser_fasta_test.dart b/pkg/analyzer/test/generated/parser_fasta_test.dart
index 4b7d002a0d0ad245eba46ede589bb02d9fbdcdb3..86cf94b141e73aa433962255d1883f2fceb479fd 100644
--- a/pkg/analyzer/test/generated/parser_fasta_test.dart
+++ b/pkg/analyzer/test/generated/parser_fasta_test.dart
@@ -422,12 +422,6 @@ class ExpressionParserTest_Fasta extends FastaParserTestCase
 
   @override
   @failingTest
-  void test_parseAssignableExpression_expression_question_dot() {
-    super.test_parseAssignableExpression_expression_question_dot();
-  }
-
-  @override
-  @failingTest
   void
       test_parseAssignableExpression_identifier_args_dot_typeParameterComments() {
     super
@@ -442,36 +436,6 @@ class ExpressionParserTest_Fasta extends FastaParserTestCase
 
   @override
   @failingTest
-  void test_parseAssignableExpression_identifier_question_dot() {
-    super.test_parseAssignableExpression_identifier_question_dot();
-  }
-
-  @override
-  @failingTest
-  void test_parseAssignableSelector_dot() {
-    super.test_parseAssignableSelector_dot();
-  }
-
-  @override
-  @failingTest
-  void test_parseAssignableSelector_index() {
-    super.test_parseAssignableSelector_index();
-  }
-
-  @override
-  @failingTest
-  void test_parseAssignableSelector_none() {
-    super.test_parseAssignableSelector_none();
-  }
-
-  @override
-  @failingTest
-  void test_parseAssignableSelector_question_dot() {
-    super.test_parseAssignableSelector_question_dot();
-  }
-
-  @override
-  @failingTest
   void test_parseAwaitExpression() {
     super.test_parseAwaitExpression();
   }
@@ -865,12 +829,6 @@ class ExpressionParserTest_Fasta extends FastaParserTestCase
 
   @override
   @failingTest
-  void test_parsePostfixExpression_none_methodInvocation_question_dot() {
-    super.test_parsePostfixExpression_none_methodInvocation_question_dot();
-  }
-
-  @override
-  @failingTest
   void
       test_parsePostfixExpression_none_methodInvocation_question_dot_typeArgumentComments() {
     super
@@ -880,14 +838,6 @@ class ExpressionParserTest_Fasta extends FastaParserTestCase
   @override
   @failingTest
   void
-      test_parsePostfixExpression_none_methodInvocation_question_dot_typeArguments() {
-    super
-        .test_parsePostfixExpression_none_methodInvocation_question_dot_typeArguments();
-  }
-
-  @override
-  @failingTest
-  void
       test_parsePostfixExpression_none_methodInvocation_typeArgumentComments() {
     super
         .test_parsePostfixExpression_none_methodInvocation_typeArgumentComments();
@@ -1086,10 +1036,9 @@ class FastaParserTestCase extends Object
   }
 
   @override
-  Expression parseAssignableSelector(
-      String code, Expression prefix, bool optional,
+  Expression parseAssignableSelector(String code, bool optional,
       {bool allowConditional: true}) {
-    return _parseExpression(code);
+    return _parseExpression('foo$code');
   }
 
   @override