Add Fasta tests.

pkg/fasta/test/classes.dart.outline.expect

Index: pkg/fasta/test/classes.dart.outline.expect
diff --git a/pkg/fasta/test/classes.dart.outline.expect b/pkg/fasta/test/classes.dart.outline.expect
new file mode 100644
index 0000000000000000000000000000000000000000..7871b62252067a4e079f657ba210f7ca37cbe688
--- /dev/null
+++ b/pkg/fasta/test/classes.dart.outline.expect
@@ -0,0 +1,20 @@
+library;
+import self as self;
+import "dart:core" as core;
+
+class A extends core::Object {
+  final field core::int x;
+  final field core::int y;
+  constructor •(dynamic y) → void
+    ;
+  method method() → dynamic
+    ;
+}
+class B extends self::A {
+  constructor •(dynamic x) → void
+    ;
+  method method() → dynamic
+    ;
+}
+static method main() → dynamic
+  ;