test: add nixlet dependency tests

docs/importing.md

@@ -22,7 +22,6 @@ You can pre-define values for dependency Nixlets like this:
   options = {
     # options for the current Nixlet
   };
-  # overwriting the default of dependency Nixlets (the user can still overwrite this)
+  # overwriting the default of dependency Nixlets (the user can still overwrite this using mkForce for example)
   config."postgres".replicaCount = 10;
 ```
-

tests/fixtures/dependency/default.nix

@@ -0,0 +1,3 @@
+{nixlet-lib, ...}: {
+  config.nixlet.dependencies."example" = nixlet-lib.mkNixlet ../example;
+}

tests/fixtures/dependency/nixlet.nix

@@ -0,0 +1,6 @@
+{
+  name = "dep";
+  version = "0.0.1";
+  description = "hello world";
+  defaultProject = "dep";
+}

tests/fixtures/dependency/values.nix

@@ -0,0 +1,5 @@
+_: {
+  options = {};
+
+  config."example".example = "Hello dependency!";
+}

tests/fixtures/example/default.nix

@@ -0,0 +1,3 @@
+{nixlet, ...}: with nixlet; {
+  kubernetes.resources.configMaps."test".data."test" = values.example;
+}

tests/lib_test.nix

@@ -3,11 +3,14 @@
   ntlib,
   nixlet-lib,
   ...
-}: {
+}: let
+  inherit (pkgs.lib) mkForce;
+in {
   suites."Lib Tests" = {
     pos = __curPos;
     tests = let
       nixlet = nixlet-lib.mkNixlet ./fixtures/example;
+      depNixlet = nixlet-lib.mkNixlet ./fixtures/dependency;
     in [
       {
         name = "mkNixlet fail on nonexistant nixlet.nix";
@@ -42,6 +45,27 @@
             assert_file_contains "${docs}" '"Hello world!"'
           '';
       }
+      {
+        name = "Nixlet dependencies";
+        expected = "Hello dependency!";
+        actual = let
+          evaled = depNixlet.eval {inherit (pkgs.stdenv.hostPlatform) system;};
+        in
+          evaled.config.kubernetes.resources.configMaps."test".data."test";
+      }
+      {
+        name = "Nixlet dependency value override";
+        expected = "Hello override!";
+        actual = let
+          evaled = depNixlet.eval {
+            inherit (pkgs.stdenv.hostPlatform) system;
+            values = {
+              "example".example = mkForce "Hello override!";
+            };
+          };
+        in
+          evaled.config.kubernetes.resources.configMaps."test".data."test";
+      }
     ];
   };
 }