CLI Implementation with Click (#2107)

* Initial CLI implementation with click package

* Adding fetch command for pulling examples and deepspeed configs

* Automating default options for CliArgs classes

* Mimicking existing no config behavior

* bugfix in choose_config

* Updating fetch to sync instead of re-download

* bugfix

* isort fix

* fixing yaml isort order

* pre-commit fixes

* simplifying argument parsing -- pass through kwargs to do_cli

* make accelerate launch default for non-preprocess commands

* fixing arg handling

* testing None placeholder approach

* removing hacky --use-gpu argument to preprocess command

* Adding brief README documentation for CLI

* remove (New)

* Initial CLI pytest tests

* progress on CLI pytest

* adding inference CLI tests; cleanup

* Refactor train CLI tests to remove various mocking

* Major CLI test refator; adding remaining CLI codepath test coverage

* pytest fixes

* remove integration markers

* parallelizing examples, deepspeed config downloads; rename test to match other CLI test naming

* moving cli pytest due to isolation issues; cleanup

* testing fixes; various minor improvements

* fix

* tests fix

* Update tests/cli/conftest.py

Co-authored-by: Wing Lian <wing.lian@gmail.com>

---------

Co-authored-by: Dan Saunders <dan@axolotl.ai>
Co-authored-by: Wing Lian <wing.lian@gmail.com>

tests/cli/test_cli_inference.py

@@ -0,0 +1,30 @@
+"""pytest tests for axolotl CLI inference command."""
+from unittest.mock import patch
+
+from axolotl.cli.main import cli
+
+
+def test_inference_basic(cli_runner, config_path):
+    """Test basic inference"""
+    with patch("axolotl.cli.inference.do_inference") as mock:
+        result = cli_runner.invoke(
+            cli,
+            ["inference", str(config_path), "--no-accelerate"],
+            catch_exceptions=False,
+        )
+
+        assert mock.called
+        assert result.exit_code == 0
+
+
+def test_inference_gradio(cli_runner, config_path):
+    """Test basic inference (gradio path)"""
+    with patch("axolotl.cli.inference.do_inference_gradio") as mock:
+        result = cli_runner.invoke(
+            cli,
+            ["inference", str(config_path), "--no-accelerate", "--gradio"],
+            catch_exceptions=False,
+        )
+
+        assert mock.called
+        assert result.exit_code == 0