Add test to check that we handle predicates that can define assoc types correctly

Author: spastorino

src/test/ui/associated-type-bounds/handle-predicates-that-can-define-assoc-type.rs

@@ -0,0 +1,10 @@
+// check-pass
+
+trait Foo<T> {}
+trait Bar {
+    type A;
+    type B;
+}
+trait Baz: Bar<B = u32> + Foo<Self::A> {}
+
+fn main() {}