Add more tests

Author: natsukagami

tests/init/pos/early-promote.scala

@@ -0,0 +1,29 @@
+class Y {
+ class X {
+   class B {
+     def g = f
+     def g2 = n
+   }
+   val f = 42
+   val b = new B  // warm(B, X.this)
+ }
+
+ val n = 10
+ val x = new X
+ List(x.b)      // unsafe promotion
+
+}
+
+class A { // checking A
+  class B {
+    def bf = 42
+    class C {
+      def x = bf // uses outer[C], but never outer[B]
+    }
+    List((new C).x)
+    def c = new C
+  }
+  val b = new B()
+  List(b) // Direct promotion works here
+  val af = 42
+}