1 files changed, 75 insertions, 0 deletions
diff --git a/tests/modules.ur b/tests/modules.ur
new file mode 100644
index 00000000..5089f17b
--- /dev/null
+++ b/tests/modules.ur
@@ -0,0 +1,75 @@
+signature A = sig end
+structure A = struct end
+structure Ao : A = A
+
+
+structure B = struct
+        type t = int
+end
+structure Bo0 : sig end = B
+structure BoA : A = B
+
+signature B1 = sig
+        type t
+end
+structure Bo1 : B1 = B
+(*structure AoB1 : B1 = A*)
+
+signature B2 = sig
+        type t = int
+end
+structure Bo2 : B2 = B
+
+
+structure C = struct
+        type t = float
+end
+structure CoB1 : B1 = C
+(*structure CoB2 : B2 = C*)
+
+
+signature NAT = sig
+        type t
+        val zero : t
+end
+structure Nat : NAT = struct
+        type t = int
+        val zero = 0
+end
+(*structure NotNat : NAT = struct
+        type t = int
+        val zero = 0.0
+end*)
+(*structure NotNat : NAT = struct
+        val zero = 0
+end*)
+
+
+signature WOBBLE = sig
+        type t
+        type s
+end
+structure Wobble1 = struct
+        type t = int
+        type s = float
+end
+structure Wobble2 = struct
+        type s = int
+        type t = float
+end
+
+
+structure N = struct
+        type t = string
+        structure N2 = struct
+                type t = int
+                val zero = 0
+        end
+        val x = "Hi"
+end
+signature N = sig
+        structure N2 : NAT
+        type t
+        val x : t
+end
+structure No : N = N