tests(kanshi): fix check evaluation and assert injected config path

Author: Lassulus

modules/kanshi/check.nix

@@ -4,30 +4,29 @@
 }:
 
 let
-  kanshiApplied = self.wrapperModules.kanshi.apply {
-    inherit pkgs;
+  kanshiConfig = pkgs.writeText "kanshi-test-config" ''
+    profile {
+      output eDP-1 enable scale 2
+    }
+  '';
 
-    configFile.content = ''
-      profile {
-        output eDP-1 enable scale 2
-      }
-    '';
-  };
-
-  kanshiWrapped = kanshiApplied.wrapper;
-  kanshiConfigPath = toString kanshiApplied.config.configFile.path;
+  kanshiWrapped =
+    (self.wrapperModules.kanshi.apply {
+      inherit pkgs;
+      configFile.path = toString kanshiConfig;
+    }).wrapper;
 
 in
 pkgs.runCommand "kanshi-test" { } ''
   help_output="$(${kanshiWrapped}/bin/kanshi --help 2>&1)"
   [[ "$help_output" == *config* ]]
 
-  test -f "${kanshiConfigPath}"
-  grep -qF 'output eDP-1 enable scale 2' "${kanshiConfigPath}"
+  test -f "${kanshiConfig}"
+  grep -qF 'output eDP-1 enable scale 2' "${kanshiConfig}"
 
   wrapper_script=$(<"${kanshiWrapped}/bin/kanshi")
   [[ "$wrapper_script" == *"--config"* ]]
-  [[ "$wrapper_script" == *"${kanshiConfigPath}"* ]]
+  [[ "$wrapper_script" == *"${kanshiConfig}"* ]]
 
   touch $out
 ''