From eeb4ae1c66d292903855fe8e507ef66b82c5b533 Mon Sep 17 00:00:00 2001
From: Dmitry Kalinkin <dmitry.kalinkin@gmail.com>
Date: Mon, 9 Nov 2020 21:51:27 -0500
Subject: [PATCH] geant4.tests.example_B1: init

---
 .../libraries/physics/geant4/default.nix      |  5 +++
 .../libraries/physics/geant4/tests.nix        | 31 +++++++++++++++++++
 2 files changed, 36 insertions(+)
 create mode 100644 pkgs/development/libraries/physics/geant4/tests.nix

diff --git a/pkgs/development/libraries/physics/geant4/default.nix b/pkgs/development/libraries/physics/geant4/default.nix
index 97822d769dd5..2aa53b213a99 100644
--- a/pkgs/development/libraries/physics/geant4/default.nix
+++ b/pkgs/development/libraries/physics/geant4/default.nix
@@ -38,6 +38,9 @@
 # For enablePython
 , boost
 , python3
+
+# For tests
+, callPackage
 }:
 
 let
@@ -108,6 +111,8 @@ stdenv.mkDerivation rec {
           inherit stdenv fetchurl;
           geant_version = version;
       };
+
+    tests = callPackage ./tests.nix {};
   };
 
   # Set the myriad of envars required by Geant4 if we use a nix-shell.
diff --git a/pkgs/development/libraries/physics/geant4/tests.nix b/pkgs/development/libraries/physics/geant4/tests.nix
new file mode 100644
index 000000000000..83afee6089d4
--- /dev/null
+++ b/pkgs/development/libraries/physics/geant4/tests.nix
@@ -0,0 +1,31 @@
+{ stdenv, cmake, geant4 }:
+
+{
+  example_B1 = stdenv.mkDerivation {
+    name = "${geant4.name}-test-example_B1";
+
+    inherit (geant4) src;
+
+    nativeBuildInputs = [ cmake ];
+    buildInputs = [ geant4 ];
+    checkInputs = with geant4.data; [
+      G4EMLOW
+      G4ENSDFSTATE
+      G4PARTICLEXS
+      G4PhotonEvaporation
+    ];
+
+    prePatch = ''
+      cd examples/basic/B1
+    '';
+
+    doCheck = true;
+    checkPhase = ''
+      runHook preCheck
+
+      ./exampleB1 ../run2.mac
+
+      runHook postCheck
+    '';
+  };
+}