From b65b9dc5e1b7600a3fa89ed3bec3c043e7e54c6c Mon Sep 17 00:00:00 2001
From: Julian Ospald <hasufell@posteo.de>
Date: Thu, 16 Apr 2020 08:24:21 +0200
Subject: [PATCH] Test that setting ghc versions isn't broken

Wrt #7
---
 .gitlab/script/ghcup_version.sh | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/.gitlab/script/ghcup_version.sh b/.gitlab/script/ghcup_version.sh
index 6c67d45..f302e9f 100755
--- a/.gitlab/script/ghcup_version.sh
+++ b/.gitlab/script/ghcup_version.sh
@@ -49,11 +49,25 @@ eghcup list
 eghcup list -t ghc
 eghcup list -t cabal
 
+ghc_ver=$(ghc --numeric-version)
 ghc --version
 ghci --version
 ghc-$(ghc --numeric-version) --version
 ghci-$(ghc --numeric-version) --version
 
+
+# test installing new ghc doesn't mess with currently set GHC
+# https://gitlab.haskell.org/haskell/ghcup-hs/issues/7
+eghcup install 8.4.4
+[ "$(ghc --numeric-version)" = "${ghc_ver}" ]
+eghcup set 8.4.4
+eghcup set 8.4.4
+[ "$(ghc --numeric-version)" = "8.4.4" ]
+eghcup set ${GHC_VERSION}
+[ "$(ghc --numeric-version)" = "${ghc_ver}" ]
+eghcup rm 8.4.4
+[ "$(ghc --numeric-version)" = "${ghc_ver}" ]
+
 eghcup rm $(ghc --numeric-version)
 
 eghcup upgrade