[commit: ghc] master: Add test for Trac #14580 (6f6d105)

[git at git.haskell.org]

Repository : ssh://git@git.haskell.org/ghc

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/6f6d1050d96e6697cc4559eb54d03959efe28de1/ghc

>---------------------------------------------------------------

commit 6f6d1050d96e6697cc4559eb54d03959efe28de1
Author: Simon Peyton Jones <simonpj at microsoft.com>
Date:   Thu Dec 14 11:39:19 2017 +0000

    Add test for Trac #14580


>---------------------------------------------------------------

6f6d1050d96e6697cc4559eb54d03959efe28de1
 testsuite/tests/polykinds/T14580.hs     | 8 ++++++++
 testsuite/tests/polykinds/T14580.stderr | 6 ++++++
 testsuite/tests/polykinds/all.T         | 1 +
 3 files changed, 15 insertions(+)

diff --git a/testsuite/tests/polykinds/T14580.hs b/testsuite/tests/polykinds/T14580.hs
new file mode 100644
index 0000000..6d11d78
--- /dev/null
+++ b/testsuite/tests/polykinds/T14580.hs
@@ -0,0 +1,8 @@
+{-# LANGUAGE PolyKinds, DataKinds, TypeInType, TypeOperators #-}
+module T14580 where
+import Data.Kind
+
+type Cat ob = ob -> ob -> Type
+data ISO' :: Cat i -> i -> i -> Type
+type ISO cat a b = ISO' cat a b -> Type
+type (a <--> b) iso cat = ISO (iso :: cat a b)
diff --git a/testsuite/tests/polykinds/T14580.stderr b/testsuite/tests/polykinds/T14580.stderr
new file mode 100644
index 0000000..babbb49
--- /dev/null
+++ b/testsuite/tests/polykinds/T14580.stderr
@@ -0,0 +1,6 @@
+
+T14580.hs:8:31: error:
+    • Expected kind ‘Cat a’, but ‘(iso :: cat a b)’ has kind ‘cat a b’
+    • In the first argument of ‘ISO’, namely ‘(iso :: cat a b)’
+      In the type ‘ISO (iso :: cat a b)’
+      In the type declaration for ‘<-->’
diff --git a/testsuite/tests/polykinds/all.T b/testsuite/tests/polykinds/all.T
index 4c4d01b..89ebc2a 100644
--- a/testsuite/tests/polykinds/all.T
+++ b/testsuite/tests/polykinds/all.T
@@ -181,4 +181,5 @@ test('T11203', normal, compile_fail, [''])
 test('T14555', normal, compile_fail, [''])
 test('T14563', normal, compile_fail, [''])
 test('T14561', normal, compile_fail, [''])
+test('T14580', normal, compile_fail, [''])