Fix cascade tests 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 fa334ab370c5f2e340100f6b59927c805c811097..d7f17c7dec9f0ca63f6b8898d438d23f01c656a7 100644
--- a/pkg/analyzer/test/generated/parser_fasta_test.dart
+++ b/pkg/analyzer/test/generated/parser_fasta_test.dart
@@ -428,18 +428,6 @@ class ExpressionParserTest_Fasta extends FastaParserTestCase
 
   @override
   @failingTest
-  void test_parseCascadeSection_i() {
-    super.test_parseCascadeSection_i();
-  }
-
-  @override
-  @failingTest
-  void test_parseCascadeSection_ia() {
-    super.test_parseCascadeSection_ia();
-  }
-
-  @override
-  @failingTest
   void test_parseCascadeSection_ia_typeArgumentComments() {
     super.test_parseCascadeSection_ia_typeArgumentComments();
   }
@@ -452,36 +440,12 @@ class ExpressionParserTest_Fasta extends FastaParserTestCase
 
   @override
   @failingTest
-  void test_parseCascadeSection_ii() {
-    super.test_parseCascadeSection_ii();
-  }
-
-  @override
-  @failingTest
   void test_parseCascadeSection_ii_typeArgumentComments() {
     super.test_parseCascadeSection_ii_typeArgumentComments();
   }
 
   @override
   @failingTest
-  void test_parseCascadeSection_ii_typeArguments() {
-    super.test_parseCascadeSection_ii_typeArguments();
-  }
-
-  @override
-  @failingTest
-  void test_parseCascadeSection_p() {
-    super.test_parseCascadeSection_p();
-  }
-
-  @override
-  @failingTest
-  void test_parseCascadeSection_p_assign() {
-    super.test_parseCascadeSection_p_assign();
-  }
-
-  @override
-  @failingTest
   void test_parseCascadeSection_p_assign_withCascade() {
     super.test_parseCascadeSection_p_assign_withCascade();
   }
@@ -500,36 +464,12 @@ class ExpressionParserTest_Fasta extends FastaParserTestCase
 
   @override
   @failingTest
-  void test_parseCascadeSection_p_builtIn() {
-    super.test_parseCascadeSection_p_builtIn();
-  }
-
-  @override
-  @failingTest
-  void test_parseCascadeSection_pa() {
-    super.test_parseCascadeSection_pa();
-  }
-
-  @override
-  @failingTest
   void test_parseCascadeSection_pa_typeArgumentComments() {
     super.test_parseCascadeSection_pa_typeArgumentComments();
   }
 
   @override
   @failingTest
-  void test_parseCascadeSection_pa_typeArguments() {
-    super.test_parseCascadeSection_pa_typeArguments();
-  }
-
-  @override
-  @failingTest
-  void test_parseCascadeSection_paa() {
-    super.test_parseCascadeSection_paa();
-  }
-
-  @override
-  @failingTest
   void test_parseCascadeSection_paa_typeArgumentComments() {
     super.test_parseCascadeSection_paa_typeArgumentComments();
   }
@@ -542,12 +482,6 @@ class ExpressionParserTest_Fasta extends FastaParserTestCase
 
   @override
   @failingTest
-  void test_parseCascadeSection_paapaa() {
-    super.test_parseCascadeSection_paapaa();
-  }
-
-  @override
-  @failingTest
   void test_parseCascadeSection_paapaa_typeArgumentComments() {
     super.test_parseCascadeSection_paapaa_typeArgumentComments();
   }
@@ -560,24 +494,12 @@ class ExpressionParserTest_Fasta extends FastaParserTestCase
 
   @override
   @failingTest
-  void test_parseCascadeSection_pap() {
-    super.test_parseCascadeSection_pap();
-  }
-
-  @override
-  @failingTest
   void test_parseCascadeSection_pap_typeArgumentComments() {
     super.test_parseCascadeSection_pap_typeArgumentComments();
   }
 
   @override
   @failingTest
-  void test_parseCascadeSection_pap_typeArguments() {
-    super.test_parseCascadeSection_pap_typeArguments();
-  }
-
-  @override
-  @failingTest
   void test_parseConstExpression_instanceCreation() {
     super.test_parseConstExpression_instanceCreation();
   }
@@ -1043,7 +965,8 @@ class FastaParserTestCase extends Object
 
   @override
   Expression parseCascadeSection(String code) {
-    return _parseExpression('null$code');
+    var cascadeExpression = _parseExpression('null$code') as CascadeExpression;
+    return cascadeExpression.cascadeSections.single;
   }
 
   @override