Parse documentation for class aliases, fix for /// comments.

pkg/analyzer/test/src/summary/resynthesize_common.dart

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library test.src.serialization.elements_test;
 
 import 'dart:async';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/standard_resolution_map.dart';
@@ skipping 1387 matching lines @@
 }
 class D {
 }
 class E {
 }
 ''');
   }
 
   test_class_alias_documented() async {
     var library = await checkLibrary('''
+/**
+ * Docs
+ */
+class C = D with E;
+
+class D {}
+class E {}
+''');
+    checkElementText(library, r'''
+/**
+ * Docs
+ */
+class alias C extends D with E {
+  synthetic C() = D;
+}
+class D {
+}
+class E {
+}
+''');
+  }
+
+  test_class_alias_documented_tripleSlash() async {
+    var library = await checkLibrary('''
+/// aaa
+/// b
+/// cc
+class C = D with E;
+
+class D {}
+class E {}
+''');
+    checkElementText(library, r'''
+/// aaa
+/// b
+/// cc
+class alias C extends D with E {
+  synthetic C() = D;
+}
+class D {
+}
+class E {
+}
+''');
+  }
+
+  test_class_alias_documented_withLeadingNonDocumentation() async {
+    var library = await checkLibrary('''
 // Extra comment so doc comment offset != 0
 /**
  * Docs
  */
 class C = D with E;
 
 class D {}
 class E {}''');
     checkElementText(library, r'''
 /**
@@ skipping 389 matching lines @@
 class C {}''');
     checkElementText(library, r'''
 /**
  * Docs
  */
 class C {
 }
 ''');
   }
 
+  test_class_documented_mix() async {
+    var library = await checkLibrary('''
+/**
+ * aaa
+ */
+/**
+ * bbb
+ */
+class A {}
+
+/**
+ * aaa
+ */
+/// bbb
+/// ccc
+class B {}
+
+/// aaa
+/// bbb
+/**
+ * ccc
+ */
+class C {}
+
+/// aaa
+/// bbb
+/**
+ * ccc
+ */
+/// ddd
+class D {}
+
+/**
+ * aaa
+ */
+// bbb
+class E {}
+''');
+    checkElementText(library, r'''
+/**
+ * bbb
+ */
+class A {
+}
+/// bbb
+/// ccc
+class B {
+}
+/**
+ * ccc
+ */
+class C {
+}
+/// ddd
+class D {
+}
+/**
+ * aaa
+ */
+class E {
+}
+''');
+  }
+
   test_class_documented_tripleSlash() async {
     var library = await checkLibrary('''
 /// aaa
 /// bbbb
 /// cc
 class C {}''');
     checkElementText(library, r'''
 /// aaa
 /// bbbb
 /// cc
@@ skipping 8029 matching lines @@
       fail('Unexpectedly tried to get unlinked summary for $uri');
     }
     return serializedUnit;
   }
 
   @override
   bool hasLibrarySummary(String uri) {
     return true;
   }
 }