Import rasta tests.

pkg/fasta/test/rasta/cascades.dart.direct.expect

Index: pkg/fasta/test/rasta/cascades.dart.direct.expect
diff --git a/pkg/fasta/test/rasta/cascades.dart.direct.expect b/pkg/fasta/test/rasta/cascades.dart.direct.expect
new file mode 100644
index 0000000000000000000000000000000000000000..ef94f0caf009524c4d7dfd8e1a83823343d4b0be
--- /dev/null
+++ b/pkg/fasta/test/rasta/cascades.dart.direct.expect
@@ -0,0 +1,16 @@
+library;
+import self as self;
+import "dart:core" as core;
+
+class A extends core::Object {
+  constructor •() → self::A
+    : super core::Object::•();
+  method add(dynamic x) → dynamic
+    return x;
+}
+static method main() → dynamic {
+  dynamic a = new self::A::•();
+  function f(dynamic x) → dynamic
+    return x;
+  let final dynamic #t1 = a in let final dynamic #t2 = #t1.add(f).call("WHAT") in #t1;
+}