From 24af0bc2b5293697695cb6d878b007130ab8db14 Mon Sep 17 00:00:00 2001
From: Aaron Andersen <aaron@fosslib.net>
Date: Sat, 10 Nov 2018 17:37:22 -0500
Subject: [PATCH] nixos/incron: added nixos test to ensure expected behaviour

---
 nixos/release.nix      |  1 +
 nixos/tests/incron.nix | 52 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 53 insertions(+)
 create mode 100644 nixos/tests/incron.nix

diff --git a/nixos/release.nix b/nixos/release.nix
index b7f8c01bb000..c2372da23f57 100644
--- a/nixos/release.nix
+++ b/nixos/release.nix
@@ -336,6 +336,7 @@ in rec {
   tests.plasma5 = callTest tests/plasma5.nix {};
   tests.plotinus = callTest tests/plotinus.nix {};
   tests.keymap = callSubTests tests/keymap.nix {};
+  tests.incron = callTest tests/incron.nix {};
   tests.initrdNetwork = callTest tests/initrd-network.nix {};
   tests.kafka = callSubTests tests/kafka.nix {};
   tests.kernel-latest = callTest tests/kernel-latest.nix {};
diff --git a/nixos/tests/incron.nix b/nixos/tests/incron.nix
new file mode 100644
index 000000000000..e39bbb5f096b
--- /dev/null
+++ b/nixos/tests/incron.nix
@@ -0,0 +1,52 @@
+import ./make-test.nix ({ pkgs, lib, ... }:
+
+{
+  name = "incron";
+  meta.maintainers = [ lib.maintainers.aanderse ];
+
+  machine =
+    { ... }:
+    { services.incron.enable = true;
+      services.incron.extraPackages = [ pkgs.coreutils ];
+      services.incron.systab = ''
+        /test IN_CREATE,IN_MODIFY,IN_CLOSE_WRITE,IN_MOVED_FROM,IN_MOVED_TO echo "$@/$# $%" >> /root/incron.log
+      '';
+
+      # ensure the directory to be monitored exists before incron is started
+      system.activationScripts.incronTest = ''
+        mkdir /test
+      '';
+    };
+
+  testScript = ''
+    startAll;
+
+    $machine->waitForUnit("multi-user.target");
+    $machine->waitForUnit("incron.service");
+
+    $machine->succeed("test -d /test");
+    # create some activity for incron to monitor
+    $machine->succeed("touch /test/file");
+    $machine->succeed("echo foo >> /test/file");
+    $machine->succeed("mv /test/file /root");
+    $machine->succeed("mv /root/file /test");
+
+    $machine->sleep(1);
+
+    # touch /test/file
+    $machine->succeed("grep '/test/file IN_CREATE' /root/incron.log");
+
+    # echo foo >> /test/file
+    $machine->succeed("grep '/test/file IN_MODIFY' /root/incron.log");
+    $machine->succeed("grep '/test/file IN_CLOSE_WRITE' /root/incron.log");
+
+    # mv /test/file /root
+    $machine->succeed("grep '/test/file IN_MOVED_FROM' /root/incron.log");
+
+    # mv /root/file /test
+    $machine->succeed("grep '/test/file IN_MOVED_TO' /root/incron.log");
+
+    # ensure something unexpected is not present
+    $machine->fail("grep 'IN_OPEN' /root/incron.log");
+  '';
+})