dffml: configloader file @

patch.diff

diff --git a/dffml/util/cli/arg.py b/dffml/util/cli/arg.py
index 01ffa75b..e4fd9212 100644
--- a/dffml/util/cli/arg.py
+++ b/dffml/util/cli/arg.py
@@ -3,10 +3,10 @@
 import copy
 from typing import Optional
 
-from ..data import traverse_config_set
+from ..data import traverse_config_set, merge
 
 
-def parse_unknown(*unknown):
+async def parse_unknown(*unknown, configloaders=None):
     parsed = {}
     name = []
     add_to_parsed = []
@@ -23,6 +23,9 @@ def parse_unknown(*unknown):
                 traverse_config_set(parsed, *name, add_to_parsed)
             name = arg.lstrip("-").split("-")
             add_to_parsed = []
+        elif arg.startswith("@") and configloaders is not None:
+            _, conf_dict = await configloaders.load_file(arg[1:])
+            merge(parsed, conf_dict)
         else:
             add_to_parsed.append(arg)
     if unknown and name:
diff --git a/tests/util/lr-model-config.yaml b/tests/util/lr-model-config.yaml
new file mode 100644
index 00000000..1d24f434
--- /dev/null
+++ b/tests/util/lr-model-config.yaml
@@ -0,0 +1,6 @@
+model:
+  config:
+    predict:
+      dtype: int
+      length: 1
+      name: Salary
diff --git a/tests/util/test_cli.py b/tests/util/test_cli.py
index 1a97775d..f1dcd2dc 100644
--- a/tests/util/test_cli.py
+++ b/tests/util/test_cli.py
@@ -4,6 +4,7 @@ import sys
 import json
 import asyncio
 import logging
+import pathlib
 import unittest
 from unittest.mock import patch
 
@@ -184,7 +185,7 @@ class TestCMD(AsyncTestCase):
             mock_method.assert_called_once()
 
 
-class TestArg(unittest.TestCase):
+class TestArg(IntegrationCLITestCase):
     def test_init(self):
         arg = Arg("-test", key="value")
         self.assertEqual(arg.name, "-test")
@@ -201,15 +202,33 @@ class TestArg(unittest.TestCase):
         self.assertEqual(second["key"], "new_value")
 
     def test_parse_unknown(self):
-        parsed = parse_unknown(
-            "-rchecker-memory-kvstore",
-            "withargs",
-            "-rchecker-memory-kvstore-withargs-filename",
-            "somefile",
-        )
+        self.required_plugins("dffml-config-yaml")
+        async with ConfigLoaders() as configloaders:
+            parsed = await parse_unknown(
+                "-rchecker-memory-kvstore",
+                "withargs",
+                "-rchecker-memory-kvstore-withargs-filename",
+                "somefile",
+                # More command line arguments via file
+                "-model",
+                "slr",
+                "@"
+                + str(pathlib.Path(__file__).parent / "lr-model-config.yaml"),
+                configloaders=configloaders,
+            )
         self.assertEqual(
             parsed,
             {
+                "model": {
+                    "plugin": "slr",
+                    "config": {
+                        "predict": {
+                            "dtype": "int",
+                            "length": 1,
+                            "name": "Salary",
+                        }
+                    },
+                },
                 "rchecker": {
                     "plugin": None,
                     "config": {
@@ -233,7 +252,7 @@ class TestArg(unittest.TestCase):
                             },
                         }
                     },
-                }
+                },
             },
         )