testing: rename defaults to common options

They are technically no defaults and competing declarations cause a
module error

examples/nginx-deployment/default.nix

@@ -19,10 +19,10 @@ let
           tests = [ ./test.nix ];
           docker.registryUrl = "";
           # testing commonalities for tests that exhibit the respective feature
-          defaults = [
+          common = [
             {
               features = [ "k8s" ];
-              default = {
+              options = {
                 kubernetes.version = "1.20";
               };
             }

modules/testing/default.nix

@@ -39,21 +39,21 @@ in
       default = true;
     };
 
-    defaults = mkOption {
-      description = "List of defaults to apply to tests";
+    common = mkOption {
+      description = "List of common options to apply to tests";
       type = types.listOf (types.submodule ({ config, ... }: {
         options = {
           features = mkOption {
-            description = "List of features that test has to have to apply defaults";
+            description = "List of features that test has to have to apply options";
             type = types.listOf types.str;
             default = [ ];
           };
 
-          default = mkOption {
-            description = "Default to apply to test";
+          options = mkOption {
+            description = "Options to apply to test";
             type = types.unspecified;
             default = { };
-            apply = default: { _file = "testing.defaults"; } // default;
+            apply = default: { _file = "testing.common"; } // default;
           };
         };
       }));

modules/testing/docker.nix

@@ -37,9 +37,9 @@ in
     };
   };
 
-  config.testing.defaults = [{
+  config.testing.common = [{
     features = [ "docker" ];
-    default = {
+    options = {
       _file = "testing.docker.registryUrl";
       docker.registry.url = cfg.registryUrl;
     };

modules/testing/evalTest.nix

@@ -33,23 +33,23 @@ let
   # test features
   testFeatures = evaled'.config._m.features;
 
-  # defaults that can be applied on tests
-  defaults =
+  # common options that can be applied on this test
+  commonOpts =
     filter
       (d:
         (intersectLists d.features testFeatures) == d.features ||
         (length d.features) == 0
       )
-      testing.defaults;
+      testing.common;
 
-  # add default modules to all modules
-  modulesWithDefaults = modules ++ (map (d: d.default) defaults);
+  # add common options modules to all modules
+  modulesWithCommonOptions = modules ++ (map (d: d.options) commonOpts);
 
   # evaled test
   evaled =
     let
       evaled' = kubenix.evalModules {
-        modules = modulesWithDefaults;
+        modules = modulesWithCommonOptions;
       };
     in
     if testing.throwError then evaled'

tests/default.nix

@@ -40,10 +40,10 @@ let
           args = { images = pkgs.callPackage ./images.nix { }; };
           docker.registryUrl = registry;
 
-          defaults = [
+          common = [
             {
               features = [ "k8s" ];
-              default = {
+              options = {
                 kubernetes.version = k8sVersion;
               };
             }