diff --git a/tests/data/device_config.yaml b/tests/data/device_config.yaml
new file mode 100644
index 0000000..95cbb2b
--- /dev/null
+++ b/tests/data/device_config.yaml
@@ -0,0 +1,10 @@
+# yaml-language-server: $schema=schema.json
+controller:
+  serial_settings:
+    port: /dev/serial/by-id/usb-Thorlabs_APT_Filter_Flipper_37007189-if00-port0
+    baud: 115200
+transport:
+  rest:
+    host: localhost
+    port: 8083
+    log_level: info
diff --git a/tests/data/schema.json b/tests/data/schema.json
new file mode 100644
index 0000000..4d0a351
--- /dev/null
+++ b/tests/data/schema.json
@@ -0,0 +1,237 @@
+{
+  "$defs": {
+    "EpicsDocsOptions": {
+      "properties": {
+        "path": {
+          "default": "/workspaces/thorlabs-mff-fastcs",
+          "format": "path",
+          "title": "Path",
+          "type": "string"
+        },
+        "depth": {
+          "anyOf": [
+            {
+              "type": "integer"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "default": null,
+          "title": "Depth"
+        }
+      },
+      "title": "EpicsDocsOptions",
+      "type": "object"
+    },
+    "EpicsGUIFormat": {
+      "enum": [
+        ".bob",
+        ".edl"
+      ],
+      "title": "EpicsGUIFormat",
+      "type": "string"
+    },
+    "EpicsGUIOptions": {
+      "properties": {
+        "output_path": {
+          "default": "/workspaces/thorlabs-mff-fastcs/output.bob",
+          "format": "path",
+          "title": "Output Path",
+          "type": "string"
+        },
+        "file_format": {
+          "$ref": "#/$defs/EpicsGUIFormat",
+          "default": ".bob"
+        },
+        "title": {
+          "default": "Simple Device",
+          "title": "Title",
+          "type": "string"
+        }
+      },
+      "title": "EpicsGUIOptions",
+      "type": "object"
+    },
+    "EpicsIOCOptions": {
+      "properties": {
+        "terminal": {
+          "default": true,
+          "title": "Terminal",
+          "type": "boolean"
+        },
+        "pv_prefix": {
+          "default": "MY-DEVICE-PREFIX",
+          "title": "Pv Prefix",
+          "type": "string"
+        }
+      },
+      "title": "EpicsIOCOptions",
+      "type": "object"
+    },
+    "EpicsOptions": {
+      "properties": {
+        "docs": {
+          "$ref": "#/$defs/EpicsDocsOptions"
+        },
+        "gui": {
+          "$ref": "#/$defs/EpicsGUIOptions"
+        },
+        "ioc": {
+          "$ref": "#/$defs/EpicsIOCOptions"
+        }
+      },
+      "title": "EpicsOptions",
+      "type": "object"
+    },
+    "GraphQLOptions": {
+      "properties": {
+        "gql": {
+          "$ref": "#/$defs/GraphQLServerOptions"
+        }
+      },
+      "title": "GraphQLOptions",
+      "type": "object"
+    },
+    "GraphQLServerOptions": {
+      "properties": {
+        "host": {
+          "default": "localhost",
+          "title": "Host",
+          "type": "string"
+        },
+        "port": {
+          "default": 8080,
+          "title": "Port",
+          "type": "integer"
+        },
+        "log_level": {
+          "default": "info",
+          "title": "Log Level",
+          "type": "string"
+        }
+      },
+      "title": "GraphQLServerOptions",
+      "type": "object"
+    },
+    "RestOptions": {
+      "properties": {
+        "rest": {
+          "$ref": "#/$defs/RestServerOptions"
+        }
+      },
+      "title": "RestOptions",
+      "type": "object"
+    },
+    "RestServerOptions": {
+      "properties": {
+        "host": {
+          "default": "localhost",
+          "title": "Host",
+          "type": "string"
+        },
+        "port": {
+          "default": 8080,
+          "title": "Port",
+          "type": "integer"
+        },
+        "log_level": {
+          "default": "info",
+          "title": "Log Level",
+          "type": "string"
+        }
+      },
+      "title": "RestServerOptions",
+      "type": "object"
+    },
+    "SerialConnectionSettings": {
+      "properties": {
+        "port": {
+          "title": "Port",
+          "type": "string"
+        },
+        "baud": {
+          "default": 115200,
+          "title": "Baud",
+          "type": "integer"
+        }
+      },
+      "required": [
+        "port"
+      ],
+      "title": "SerialConnectionSettings",
+      "type": "object"
+    },
+    "TangoDSROptions": {
+      "properties": {
+        "dev_name": {
+          "default": "MY/DEVICE/NAME",
+          "title": "Dev Name",
+          "type": "string"
+        },
+        "dsr_instance": {
+          "default": "MY_SERVER_INSTANCE",
+          "title": "Dsr Instance",
+          "type": "string"
+        },
+        "debug": {
+          "default": false,
+          "title": "Debug",
+          "type": "boolean"
+        }
+      },
+      "title": "TangoDSROptions",
+      "type": "object"
+    },
+    "TangoOptions": {
+      "properties": {
+        "dsr": {
+          "$ref": "#/$defs/TangoDSROptions"
+        }
+      },
+      "title": "TangoOptions",
+      "type": "object"
+    },
+    "ThorlabsMFFSettings": {
+      "properties": {
+        "serial_settings": {
+          "$ref": "#/$defs/SerialConnectionSettings"
+        }
+      },
+      "required": [
+        "serial_settings"
+      ],
+      "title": "ThorlabsMFFSettings",
+      "type": "object"
+    }
+  },
+  "additionalProperties": false,
+  "properties": {
+    "controller": {
+      "$ref": "#/$defs/ThorlabsMFFSettings"
+    },
+    "transport": {
+      "anyOf": [
+        {
+          "$ref": "#/$defs/EpicsOptions"
+        },
+        {
+          "$ref": "#/$defs/TangoOptions"
+        },
+        {
+          "$ref": "#/$defs/RestOptions"
+        },
+        {
+          "$ref": "#/$defs/GraphQLOptions"
+        }
+      ],
+      "title": "Transport"
+    }
+  },
+  "required": [
+    "controller",
+    "transport"
+  ],
+  "title": "ThorlabsMFF",
+  "type": "object"
+}
\ No newline at end of file