From 028fb8d43bbcd2fcc08bc8265b3910ab32c9cf23 Mon Sep 17 00:00:00 2001
From: technofab <admin@technofab.de>
Date: Mon, 9 Feb 2026 20:49:54 +0100
Subject: [PATCH] test: add nixlet dependency tests

---
 docs/importing.md                     |  3 +--
 tests/fixtures/dependency/default.nix |  3 +++
 tests/fixtures/dependency/nixlet.nix  |  6 ++++++
 tests/fixtures/dependency/values.nix  |  5 +++++
 tests/fixtures/example/default.nix    |  3 +++
 tests/lib_test.nix                    | 26 +++++++++++++++++++++++++-
 6 files changed, 43 insertions(+), 3 deletions(-)
 create mode 100644 tests/fixtures/dependency/default.nix
 create mode 100644 tests/fixtures/dependency/nixlet.nix
 create mode 100644 tests/fixtures/dependency/values.nix
 create mode 100644 tests/fixtures/example/default.nix

diff --git a/docs/importing.md b/docs/importing.md
index 6bca353..d31088e 100644
--- a/docs/importing.md
+++ b/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;
 ```
-
diff --git a/tests/fixtures/dependency/default.nix b/tests/fixtures/dependency/default.nix
new file mode 100644
index 0000000..ba61e10
--- /dev/null
+++ b/tests/fixtures/dependency/default.nix
@@ -0,0 +1,3 @@
+{nixlet-lib, ...}: {
+  config.nixlet.dependencies."example" = nixlet-lib.mkNixlet ../example;
+}
diff --git a/tests/fixtures/dependency/nixlet.nix b/tests/fixtures/dependency/nixlet.nix
new file mode 100644
index 0000000..087b2e9
--- /dev/null
+++ b/tests/fixtures/dependency/nixlet.nix
@@ -0,0 +1,6 @@
+{
+  name = "dep";
+  version = "0.0.1";
+  description = "hello world";
+  defaultProject = "dep";
+}
diff --git a/tests/fixtures/dependency/values.nix b/tests/fixtures/dependency/values.nix
new file mode 100644
index 0000000..aeba6a4
--- /dev/null
+++ b/tests/fixtures/dependency/values.nix
@@ -0,0 +1,5 @@
+_: {
+  options = {};
+
+  config."example".example = "Hello dependency!";
+}
diff --git a/tests/fixtures/example/default.nix b/tests/fixtures/example/default.nix
new file mode 100644
index 0000000..6f71e66
--- /dev/null
+++ b/tests/fixtures/example/default.nix
@@ -0,0 +1,3 @@
+{nixlet, ...}: with nixlet; {
+  kubernetes.resources.configMaps."test".data."test" = values.example;
+}
diff --git a/tests/lib_test.nix b/tests/lib_test.nix
index eeeb34b..fafb038 100644
--- a/tests/lib_test.nix
+++ b/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";
+      }
     ];
   };
 }