From 5268ecb595ab5c5132ee54baa940553e597df801 Mon Sep 17 00:00:00 2001
From: DavHau <d.hauer.it@gmail.com>
Date: Wed, 2 Aug 2023 18:44:36 +0200
Subject: [PATCH 1/2] flake: add input nix-unit

---
 flake.lock | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 flake.nix  |  4 ++++
 2 files changed, 53 insertions(+)

diff --git a/flake.lock b/flake.lock
index 62baf34a5..1196be246 100644
--- a/flake.lock
+++ b/flake.lock
@@ -95,6 +95,54 @@
         "type": "github"
       }
     },
+    "nix-github-actions": {
+      "inputs": {
+        "nixpkgs": [
+          "nix-unit",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1688870561,
+        "narHash": "sha256-4UYkifnPEw1nAzqqPOTL2MvWtm3sNGw1UTYTalkTcGY=",
+        "owner": "nix-community",
+        "repo": "nix-github-actions",
+        "rev": "165b1650b753316aa7f1787f3005a8d2da0f5301",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "nix-github-actions",
+        "type": "github"
+      }
+    },
+    "nix-unit": {
+      "inputs": {
+        "flake-parts": [
+          "flake-parts"
+        ],
+        "nix-github-actions": "nix-github-actions",
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "treefmt-nix": [
+          "treefmt-nix"
+        ]
+      },
+      "locked": {
+        "lastModified": 1690289081,
+        "narHash": "sha256-PCXQAQt8+i2pkUym9P1JY4JGoeZJLzzxWBhprHDdItM=",
+        "owner": "adisbladis",
+        "repo": "nix-unit",
+        "rev": "a9d6f33e50d4dcd9cfc0c92253340437bbae282b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "adisbladis",
+        "repo": "nix-unit",
+        "type": "github"
+      }
+    },
     "nixlib": {
       "locked": {
         "lastModified": 1689469483,
@@ -205,6 +253,7 @@
       "inputs": {
         "disko": "disko",
         "flake-parts": "flake-parts",
+        "nix-unit": "nix-unit",
         "nixos-generators": "nixos-generators",
         "nixpkgs": "nixpkgs",
         "pre-commit-hooks-nix": "pre-commit-hooks-nix",
diff --git a/flake.nix b/flake.nix
index 8b275868e..e509386eb 100644
--- a/flake.nix
+++ b/flake.nix
@@ -12,6 +12,10 @@
     treefmt-nix.url = "github:numtide/treefmt-nix";
     treefmt-nix.inputs.nixpkgs.follows = "nixpkgs";
     pre-commit-hooks-nix.url = "github:cachix/pre-commit-hooks.nix";
+    nix-unit.url = "github:adisbladis/nix-unit";
+    nix-unit.inputs.flake-parts.follows = "flake-parts";
+    nix-unit.inputs.nixpkgs.follows = "nixpkgs";
+    nix-unit.inputs.treefmt-nix.follows = "treefmt-nix";
   };
 
   outputs = inputs @ { flake-parts, ... }:

From b88ac7a2bfc7c50db348ab134f065f584a62e1dd Mon Sep 17 00:00:00 2001
From: DavHau <d.hauer.it@gmail.com>
Date: Wed, 2 Aug 2023 20:04:16 +0200
Subject: [PATCH 2/2] clan-config: init

- nixos-modules to jsonschema converter
- nix unit testing via adisbladis/nix-unit
- clan config: configuration CLI for nixos-modules
---
 pkgs/clan-cli/clan_cli/admin.py               |  19 --
 pkgs/clan-cli/clan_cli/cli.py                 |   5 +-
 pkgs/clan-cli/clan_cli/config/__init__.py     |  99 +++++++
 pkgs/clan-cli/clan_cli/config/schema-lib.nix  | 144 ++++++++++
 pkgs/clan-cli/flake-module.nix                |  32 ++-
 pkgs/clan-cli/shell.nix                       |   1 +
 pkgs/clan-cli/tests/config/example-data.json  |  17 ++
 .../tests/config/example-interface.nix        |  46 ++++
 .../clan-cli/tests/config/example-schema.json |  54 ++++
 pkgs/clan-cli/tests/config/test.nix           |   8 +
 .../tests/config/test_parseOption.nix         | 249 ++++++++++++++++++
 .../tests/config/test_parseOptions.nix        |  20 ++
 12 files changed, 668 insertions(+), 26 deletions(-)
 create mode 100644 pkgs/clan-cli/clan_cli/config/__init__.py
 create mode 100644 pkgs/clan-cli/clan_cli/config/schema-lib.nix
 create mode 100644 pkgs/clan-cli/tests/config/example-data.json
 create mode 100644 pkgs/clan-cli/tests/config/example-interface.nix
 create mode 100644 pkgs/clan-cli/tests/config/example-schema.json
 create mode 100644 pkgs/clan-cli/tests/config/test.nix
 create mode 100644 pkgs/clan-cli/tests/config/test_parseOption.nix
 create mode 100644 pkgs/clan-cli/tests/config/test_parseOptions.nix

diff --git a/pkgs/clan-cli/clan_cli/admin.py b/pkgs/clan-cli/clan_cli/admin.py
index cf40532be..2197b5235 100644
--- a/pkgs/clan-cli/clan_cli/admin.py
+++ b/pkgs/clan-cli/clan_cli/admin.py
@@ -18,22 +18,6 @@ def create(args: argparse.Namespace) -> None:
     )
 
 
-def edit(args: argparse.Namespace) -> None:
-    # TODO add some cli options to change certain options without relying on a text editor
-    clan_flake = f"{args.folder}/flake.nix"
-    if os.path.isfile(clan_flake):
-        subprocess.Popen(
-            [
-                os.environ["EDITOR"],
-                clan_flake,
-            ]
-        )
-    else:
-        print(
-            f"{args.folder} has no flake.nix, so it does not seem to be the clan root folder",
-        )
-
-
 def rebuild(args: argparse.Namespace) -> None:
     # TODO get clients from zerotier cli?
     if args.host:
@@ -89,9 +73,6 @@ def register_parser(parser: argparse.ArgumentParser) -> None:
     parser_create = subparser.add_parser("create", help="create a new clan")
     parser_create.set_defaults(func=create)
 
-    parser_edit = subparser.add_parser("edit", help="edit a clan")
-    parser_edit.set_defaults(func=edit)
-
     parser_rebuild = subparser.add_parser(
         "rebuild", help="build configuration of a clan and push it to the target"
     )
diff --git a/pkgs/clan-cli/clan_cli/cli.py b/pkgs/clan-cli/clan_cli/cli.py
index 1319a3d32..759b54869 100644
--- a/pkgs/clan-cli/clan_cli/cli.py
+++ b/pkgs/clan-cli/clan_cli/cli.py
@@ -1,7 +1,7 @@
 import argparse
 import sys
 
-from . import admin, secrets, ssh
+from . import admin, config, secrets, ssh
 from .errors import ClanError
 
 has_argcomplete = True
@@ -19,6 +19,9 @@ def main() -> None:
     parser_admin = subparsers.add_parser("admin")
     admin.register_parser(parser_admin)
 
+    parser_config = subparsers.add_parser("config")
+    config.register_parser(parser_config)
+
     parser_ssh = subparsers.add_parser("ssh", help="ssh to a remote machine")
     ssh.register_parser(parser_ssh)
 
diff --git a/pkgs/clan-cli/clan_cli/config/__init__.py b/pkgs/clan-cli/clan_cli/config/__init__.py
new file mode 100644
index 000000000..e1e652c90
--- /dev/null
+++ b/pkgs/clan-cli/clan_cli/config/__init__.py
@@ -0,0 +1,99 @@
+# !/usr/bin/env python3
+import argparse
+import json
+from pathlib import Path
+from typing import Any, Optional, Union
+
+
+class Kwargs:
+    def __init__(self):
+        self.type = None
+        self.default: Any = None
+        self.required: bool = False
+        self.help: Optional[str] = None
+        self.action: Optional[str] = None
+        self.choices: Optional[list] = None
+
+
+# takes a (sub)parser and configures it
+def register_parser(
+    parser: Optional[argparse.ArgumentParser] = None,
+    schema: Union[dict, str, Path] = "./tests/config/example-schema.json",
+) -> dict:
+    if not isinstance(schema, dict):
+        with open(str(schema)) as f:
+            schema: dict = json.load(f)
+    assert "type" in schema and schema["type"] == "object"
+
+    required_set = set(schema.get("required", []))
+
+    if parser is None:
+        parser = argparse.ArgumentParser(description=schema.get("description"))
+
+    type_map = {
+        "array": list,
+        "boolean": bool,
+        "integer": int,
+        "number": float,
+        "string": str,
+    }
+
+    subparsers = parser.add_subparsers(
+        title="more options",
+        description="Other options to configure",
+        help="the option to configure",
+        required=True,
+    )
+
+    for name, value in schema.get("properties", {}).items():
+        assert isinstance(value, dict)
+
+        # TODO: add support for nested objects
+        if value.get("type") == "object":
+            subparser = subparsers.add_parser(name, help=value.get("description"))
+            register_parser(parser=subparser, schema=value)
+            continue
+        # elif value.get("type") == "array":
+        #     subparser = parser.add_subparsers(dest=name)
+        #     register_parser(subparser, value)
+        #     continue
+        kwargs = Kwargs()
+        kwargs.default = value.get("default")
+        kwargs.help = value.get("description")
+        kwargs.required = name in required_set
+
+        if kwargs.default is not None:
+            kwargs.help = f"{kwargs.help}, [{kwargs.default}] in default"
+
+        if "enum" in value:
+            enum_list = value["enum"]
+            assert len(enum_list) > 0, "Enum List is Empty"
+            arg_type = type(enum_list[0])
+            assert all(
+                arg_type is type(item) for item in enum_list
+            ), f"Items in [{enum_list}] with Different Types"
+
+            kwargs.type = arg_type
+            kwargs.choices = enum_list
+        else:
+            kwargs.type = type_map[value.get("type")]
+            del kwargs.choices
+
+        name = f"--{name}"
+
+        if kwargs.type is bool:
+            assert not kwargs.default, "boolean have to be False in default"
+            kwargs.default = False
+            kwargs.action = "store_true"
+            del kwargs.type
+        else:
+            del kwargs.action
+
+        parser.add_argument(name, **vars(kwargs))
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser()
+    register_parser(parser)
+    args = parser.parse_args()
+    print(args)
diff --git a/pkgs/clan-cli/clan_cli/config/schema-lib.nix b/pkgs/clan-cli/clan_cli/config/schema-lib.nix
new file mode 100644
index 000000000..d0f2daa4e
--- /dev/null
+++ b/pkgs/clan-cli/clan_cli/config/schema-lib.nix
@@ -0,0 +1,144 @@
+{ lib ? (import <nixpkgs> { }).lib }:
+let
+
+  # from nixos type to jsonschema type
+  typeMap = {
+    bool = "boolean";
+    float = "number";
+    int = "integer";
+    str = "string";
+  };
+
+  # remove _module attribute from options
+  clean = opts: builtins.removeAttrs opts [ "_module" ];
+
+  # throw error if option type is not supported
+  notSupported = option: throw
+    "option type '${option.type.description}' not supported by jsonschema converter";
+
+in
+rec {
+
+  # parses a set of evaluated nixos options to a jsonschema
+  parseOptions = options':
+    let
+      options = clean options';
+      # parse options to jsonschema properties
+      properties = lib.mapAttrs (_name: option: parseOption option) options;
+      isRequired = prop: ! (prop ? default || prop.type == "object");
+      requiredProps = lib.filterAttrs (_: prop: isRequired prop) properties;
+      required = lib.optionalAttrs (requiredProps != { }) {
+        required = lib.attrNames requiredProps;
+      };
+    in
+    # return jsonschema
+    required // {
+      type = "object";
+      inherit properties;
+    };
+
+  # parses and evaluated nixos option to a jsonschema property definition
+  parseOption = option:
+    let
+      default = lib.optionalAttrs (option ? default) {
+        inherit (option) default;
+      };
+      description = lib.optionalAttrs (option ? description) {
+        inherit (option) description;
+      };
+    in
+    if option._type != "option"
+    then throw "parseOption: not an option"
+
+    # parse nullOr
+    else if option.type.name == "nullOr"
+    # return jsonschema property definition for nullOr
+    then default // description // {
+      type = [
+        "null"
+        (typeMap.${option.type.functor.wrapped.name} or (notSupported option))
+      ];
+    }
+
+    # parse bool
+    else if option.type.name == "bool"
+    # return jsonschema property definition for bool
+    then default // description // {
+      type = "boolean";
+    }
+
+    # parse float
+    else if option.type.name == "float"
+    # return jsonschema property definition for float
+    then default // description // {
+      type = "number";
+    }
+
+    # parse int
+    else if option.type.name == "int"
+    # return jsonschema property definition for int
+    then default // description // {
+      type = "integer";
+    }
+
+    # parse string
+    else if option.type.name == "str"
+    # return jsonschema property definition for string
+    then default // description // {
+      type = "string";
+    }
+
+    # parse enum
+    else if option.type.name == "enum"
+    # return jsonschema property definition for enum
+    then default // description // {
+      enum = option.type.functor.payload;
+    }
+
+    # parse listOf submodule
+    else if option.type.name == "listOf" && option.type.functor.wrapped.name == "submodule"
+    # return jsonschema property definition for listOf submodule
+    then default // description // {
+      type = "array";
+      items = parseOptions (option.type.functor.wrapped.getSubOptions option.loc);
+    }
+
+    # parse list
+    else if
+      (option.type.name == "listOf")
+      && (typeMap ? "${option.type.functor.wrapped.name}")
+    # return jsonschema property definition for list
+    then default // description // {
+      type = "array";
+      items = {
+        type = typeMap.${option.type.functor.wrapped.name};
+      };
+    }
+
+    # parse attrsOf submodule
+    else if option.type.name == "attrsOf" && option.type.nestedTypes.elemType.name == "submodule"
+    # return jsonschema property definition for attrsOf submodule
+    then default // description // {
+      type = "object";
+      additionalProperties = parseOptions (option.type.nestedTypes.elemType.getSubOptions option.loc);
+    }
+
+    # parse attrs
+    else if option.type.name == "attrsOf"
+    # return jsonschema property definition for attrs
+    then default // description // {
+      type = "object";
+      additionalProperties = {
+        type = typeMap.${option.type.nestedTypes.elemType.name} or (notSupported option);
+      };
+    }
+
+    # parse submodule
+    else if option.type.name == "submodule"
+    # return jsonschema property definition for submodule
+    # then (lib.attrNames (option.type.getSubOptions option.loc).opt)
+    then parseOptions (option.type.getSubOptions option.loc)
+
+    # throw error if option type is not supported
+    else notSupported option;
+}
diff --git a/pkgs/clan-cli/flake-module.nix b/pkgs/clan-cli/flake-module.nix
index a617bf145..272a5e2c5 100644
--- a/pkgs/clan-cli/flake-module.nix
+++ b/pkgs/clan-cli/flake-module.nix
@@ -1,5 +1,5 @@
 { self, ... }: {
-  perSystem = { self', pkgs, ... }: {
+  perSystem = { inputs', self', pkgs, ... }: {
     devShells.clan = pkgs.callPackage ./shell.nix {
       inherit self;
       inherit (self'.packages) clan;
@@ -18,14 +18,34 @@
         openssh
         sshpass
         zbar
-        tor
-        sops
-        age;
-      # Override license so that we can build zerotierone without 
+        tor;
+      # Override license so that we can build zerotierone without
       # having to re-import nixpkgs.
       zerotierone = pkgs.zerotierone.overrideAttrs (_old: { meta = { }; });
       ## End optional dependencies
     };
-    checks = self'.packages.clan.tests;
+
+    # check if the `clan config` example jsonschema and data is valid
+    checks.clan-config-example-schema-valid = pkgs.runCommand "clan-config-example-schema-valid" { } ''
+      echo "Checking that example-schema.json is valid"
+      ${pkgs.check-jsonschema}/bin/check-jsonschema \
+        --check-metaschema ${./.}/tests/config/example-schema.json
+
+      echo "Checking that example-data.json is valid according to example-schema.json"
+      ${pkgs.check-jsonschema}/bin/check-jsonschema \
+        --schemafile ${./.}/tests/config/example-schema.json \
+        ${./.}/tests/config/example-data.json
+
+      touch $out
+    '';
+
+    # check if the `clan config` nix jsonschema converter unit tests succeed
+    checks.clan-config-nix-unit-tests = pkgs.runCommand "clan-edit-unit-tests" { } ''
+      export NIX_PATH=nixpkgs=${pkgs.path}
+      ${inputs'.nix-unit.packages.nix-unit}/bin/nix-unit \
+        ${./.}/tests/config/test.nix \
+        --eval-store $(realpath .)
+      touch $out
+    '';
   };
 }
diff --git a/pkgs/clan-cli/shell.nix b/pkgs/clan-cli/shell.nix
index c5aeba33d..fb7735c96 100644
--- a/pkgs/clan-cli/shell.nix
+++ b/pkgs/clan-cli/shell.nix
@@ -15,6 +15,7 @@ in
 pkgs.mkShell {
   packages = [
     pkgs.ruff
+    self.inputs.nix-unit.packages.${pkgs.system}.nix-unit
     pythonWithDeps
   ];
   # sets up an editable install and add enty points to $PATH
diff --git a/pkgs/clan-cli/tests/config/example-data.json b/pkgs/clan-cli/tests/config/example-data.json
new file mode 100644
index 000000000..a703d539d
--- /dev/null
+++ b/pkgs/clan-cli/tests/config/example-data.json
@@ -0,0 +1,17 @@
+{
+  "name": "John Doe",
+  "age": 42,
+  "isAdmin": false,
+  "kernelModules": [
+    "usbhid",
+    "usb_storage"
+  ],
+  "userIds": {
+    "mic92": 1,
+    "lassulus": 2,
+    "davhau": 3
+  },
+  "services": {
+    "opt": "this option doesn't make sense"
+  }
+}
diff --git a/pkgs/clan-cli/tests/config/example-interface.nix b/pkgs/clan-cli/tests/config/example-interface.nix
new file mode 100644
index 000000000..1370d3cd9
--- /dev/null
+++ b/pkgs/clan-cli/tests/config/example-interface.nix
@@ -0,0 +1,46 @@
+/*
+  An example nixos module declaring an interface.
+*/
+{ lib, ... }: {
+  options = {
+    name = lib.mkOption {
+      type = lib.types.str;
+      default = "John Doe";
+      description = "The name of the user";
+    };
+    age = lib.mkOption {
+      type = lib.types.int;
+      default = 42;
+      description = "The age of the user";
+    };
+    isAdmin = lib.mkOption {
+      type = lib.types.bool;
+      default = false;
+      description = "Is the user an admin?";
+    };
+    # a submodule option
+    services = lib.mkOption {
+      type = lib.types.submodule {
+        options.opt = lib.mkOption {
+          type = lib.types.str;
+          default = "foo";
+          description = "A submodule option";
+        };
+      };
+    };
+    userIds = lib.mkOption {
+      type = lib.types.attrsOf lib.types.int;
+      description = "Some attributes";
+      default = {
+        horst = 1;
+        peter = 2;
+        albrecht = 3;
+      };
+    };
+    kernelModules = lib.mkOption {
+      type = lib.types.listOf lib.types.str;
+      default = [ "nvme" "xhci_pci" "ahci" ];
+      description = "A list of enabled kernel modules";
+    };
+  };
+}
diff --git a/pkgs/clan-cli/tests/config/example-schema.json b/pkgs/clan-cli/tests/config/example-schema.json
new file mode 100644
index 000000000..823a5d6cd
--- /dev/null
+++ b/pkgs/clan-cli/tests/config/example-schema.json
@@ -0,0 +1,54 @@
+{
+  "type": "object",
+  "properties": {
+    "name": {
+      "type": "string",
+      "default": "John Doe",
+      "description": "The name of the user"
+    },
+    "age": {
+      "type": "integer",
+      "default": 42,
+      "description": "The age of the user"
+    },
+    "isAdmin": {
+      "type": "boolean",
+      "default": false,
+      "description": "Is the user an admin?"
+    },
+    "kernelModules": {
+      "type": "array",
+      "items": {
+        "type": "string"
+      },
+      "default": [
+        "nvme",
+        "xhci_pci",
+        "ahci"
+      ],
+      "description": "A list of enabled kernel modules"
+    },
+    "userIds": {
+      "type": "object",
+      "default": {
+        "horst": 1,
+        "peter": 2,
+        "albrecht": 3
+      },
+      "additionalProperties": {
+        "type": "integer"
+      },
+      "description": "Some attributes"
+    },
+    "services": {
+      "type": "object",
+      "properties": {
+        "opt": {
+          "type": "string",
+          "default": "foo",
+          "description": "A submodule option"
+        }
+      }
+    }
+  }
+}
diff --git a/pkgs/clan-cli/tests/config/test.nix b/pkgs/clan-cli/tests/config/test.nix
new file mode 100644
index 000000000..8a39ed248
--- /dev/null
+++ b/pkgs/clan-cli/tests/config/test.nix
@@ -0,0 +1,8 @@
+# run these tests via `nix-unit ./test.nix`
+{ lib ? (import <nixpkgs> { }).lib
+, slib ? import ../../clan_cli/config/schema-lib.nix { inherit lib; }
+}:
+{
+  parseOption = import ./test_parseOption.nix { inherit lib slib; };
+  parseOptions = import ./test_parseOptions.nix { inherit lib slib; };
+}
diff --git a/pkgs/clan-cli/tests/config/test_parseOption.nix b/pkgs/clan-cli/tests/config/test_parseOption.nix
new file mode 100644
index 000000000..b3e6173b5
--- /dev/null
+++ b/pkgs/clan-cli/tests/config/test_parseOption.nix
@@ -0,0 +1,249 @@
+# tests for the nixos options to jsonschema converter
+# run these tests via `nix-unit ./test.nix`
+{ lib ? (import <nixpkgs> { }).lib
+, slib ? import ../../clan_cli/config/schema-lib.nix { inherit lib; }
+}:
+let
+  description = "Test Description";
+
+  evalType = type: default:
+    let
+      evaledConfig = lib.evalModules {
+        modules = [{
+          options.opt = lib.mkOption {
+            inherit type;
+            inherit default;
+            inherit description;
+          };
+        }];
+      };
+    in
+    evaledConfig.options.opt;
+in
+
+{
+  testNoDefaultNoDescription =
+    let
+      evaledConfig = lib.evalModules {
+        modules = [{
+          options.opt = lib.mkOption {
+            type = lib.types.bool;
+          };
+        }];
+      };
+    in
+    {
+      expr = slib.parseOption evaledConfig.options.opt;
+      expected = {
+        type = "boolean";
+      };
+    };
+
+  testBool =
+    let
+      default = false;
+    in
+    {
+      expr = slib.parseOption (evalType lib.types.bool default);
+      expected = {
+        type = "boolean";
+        inherit default description;
+      };
+    };
+
+  testString =
+    let
+      default = "hello";
+    in
+    {
+      expr = slib.parseOption (evalType lib.types.str default);
+      expected = {
+        type = "string";
+        inherit default description;
+      };
+    };
+
+  testInteger =
+    let
+      default = 42;
+    in
+    {
+      expr = slib.parseOption (evalType lib.types.int default);
+      expected = {
+        type = "integer";
+        inherit default description;
+      };
+    };
+
+  testFloat =
+    let
+      default = 42.42;
+    in
+    {
+      expr = slib.parseOption (evalType lib.types.float default);
+      expected = {
+        type = "number";
+        inherit default description;
+      };
+    };
+
+  testEnum =
+    let
+      default = "foo";
+      values = [ "foo" "bar" "baz" ];
+    in
+    {
+      expr = slib.parseOption (evalType (lib.types.enum values) default);
+      expected = {
+        enum = values;
+        inherit default description;
+      };
+    };
+
+  testListOfInt =
+    let
+      default = [ 1 2 3 ];
+    in
+    {
+      expr = slib.parseOption (evalType (lib.types.listOf lib.types.int) default);
+      expected = {
+        type = "array";
+        items = {
+          type = "integer";
+        };
+        inherit default description;
+      };
+    };
+
+  testAttrsOfInt =
+    let
+      default = { foo = 1; bar = 2; baz = 3; };
+    in
+    {
+      expr = slib.parseOption (evalType (lib.types.attrsOf lib.types.int) default);
+      expected = {
+        type = "object";
+        additionalProperties = {
+          type = "integer";
+        };
+        inherit default description;
+      };
+    };
+
+  testNullOrBool =
+    let
+      default = null; # null is a valid value for this type
+    in
+    {
+      expr = slib.parseOption (evalType (lib.types.nullOr lib.types.bool) default);
+      expected = {
+        type = [ "null" "boolean" ];
+        inherit default description;
+      };
+    };
+
+  testSubmoduleOption =
+    let
+      subModule = {
+        options.opt = lib.mkOption {
+          type = lib.types.bool;
+          default = true;
+          inherit description;
+        };
+      };
+    in
+    {
+      expr = slib.parseOption (evalType (lib.types.submodule subModule) { });
+      expected = {
+        type = "object";
+        properties = {
+          opt = {
+            type = "boolean";
+            default = true;
+            inherit description;
+          };
+        };
+      };
+    };
+
+  testSubmoduleOptionWithoutDefault =
+    let
+      subModule = {
+        options.opt = lib.mkOption {
+          type = lib.types.bool;
+          inherit description;
+        };
+      };
+    in
+    {
+      expr = slib.parseOption (evalType (lib.types.submodule subModule) { });
+      expected = {
+        type = "object";
+        properties = {
+          opt = {
+            type = "boolean";
+            inherit description;
+          };
+        };
+        required = [ "opt" ];
+      };
+    };
+
+  testAttrsOfSubmodule =
+    let
+      subModule = {
+        options.opt = lib.mkOption {
+          type = lib.types.bool;
+          default = true;
+          inherit description;
+        };
+      };
+      default = { foo.opt = false; bar.opt = true; };
+    in
+    {
+      expr = slib.parseOption (evalType (lib.types.attrsOf (lib.types.submodule subModule)) default);
+      expected = {
+        type = "object";
+        additionalProperties = {
+          type = "object";
+          properties = {
+            opt = {
+              type = "boolean";
+              default = true;
+              inherit description;
+            };
+          };
+        };
+        inherit default description;
+      };
+    };
+
+  testListOfSubmodule =
+    let
+      subModule = {
+        options.opt = lib.mkOption {
+          type = lib.types.bool;
+          default = true;
+          inherit description;
+        };
+      };
+      default = [{ opt = false; } { opt = true; }];
+    in
+    {
+      expr = slib.parseOption (evalType (lib.types.listOf (lib.types.submodule subModule)) default);
+      expected = {
+        type = "array";
+        items = {
+          type = "object";
+          properties = {
+            opt = {
+              type = "boolean";
+              default = true;
+              inherit description;
+            };
+          };
+        };
+        inherit default description;
+      };
+    };
+}
diff --git a/pkgs/clan-cli/tests/config/test_parseOptions.nix b/pkgs/clan-cli/tests/config/test_parseOptions.nix
new file mode 100644
index 000000000..4787d9d95
--- /dev/null
+++ b/pkgs/clan-cli/tests/config/test_parseOptions.nix
@@ -0,0 +1,20 @@
+# tests for the nixos options to jsonschema converter
+# run these tests via `nix-unit ./test.nix`
+{ lib ? (import <nixpkgs> { }).lib
+, slib ? import ../../clan_cli/config/schema-lib.nix { inherit lib; }
+}:
+let
+  evaledOptions =
+    let
+      evaledConfig = lib.evalModules {
+        modules = [ ./example-interface.nix ];
+      };
+    in
+    evaledConfig.options;
+in
+{
+  testParseOptions = {
+    expr = slib.parseOptions evaledOptions;
+    expected = builtins.fromJSON (builtins.readFile ./example-schema.json);
+  };
+}