tests/test_cli.py

"""Tests for the Humigence CLI."""

import json
import tempfile
from pathlib import Path
from unittest.mock import Mock, patch

import pytest
from typer.testing import CliRunner

from humigence.cli import app


@pytest.fixture
def runner():
    """Create a CLI runner for testing."""
    return CliRunner()


@pytest.fixture
def temp_config():
    """Create a temporary config file for testing."""
    config_data = {
        "project": "test_project",
        "model": {
            "repo": "Qwen/Qwen2.5-0.5B",
            "local_path": None,
            "use_flash_attn": True,
        },
        "compute": {"gpus": 1, "gpu_type": "RTX_4080_16GB"},
        "data": {
            "raw_path": "data/raw/test.jsonl",
            "processed_dir": "data/processed",
            "data_schema": "chat_messages",
            "max_seq_len": 1024,
            "packing": True,
            "split": {"train": 0.8, "val": 0.1, "test": 0.1},
            "template": "qwen_chat_basic_v1",
        },
        "train": {
            "precision_mode": "qlora_nf4",
            "lr": 0.0002,
            "epochs": 1,
            "tokens_per_step_target": 100000,
            "lora": {"target_modules": ["q_proj", "v_proj"], "r": 16, "alpha": 32},
        },
        "eval": {
            "primary_metric": "val_loss",
            "curated_prompts_path": "configs/curated_eval_prompts.jsonl",
            "temperature_low": 0.2,
            "temperature_high": 0.7,
        },
        "acceptance": {
            "min_val_improvement_pct": 1.0,
            "throughput_jitter_pct": 20.0,
            "curated_reasonable_threshold_pct": 70.0,
        },
        "export": {"artifacts_dir": "artifacts/humigence", "formats": ["peft_adapter"]},
    }

    with tempfile.NamedTemporaryFile(mode="w", suffix=".json", delete=False) as f:
        json.dump(config_data, f)
        yield Path(f.name)


@pytest.fixture
def mock_modules():
    """Mock the imported modules to avoid actual execution."""
    with patch.multiple(
        "humigence.cli",
        TrainingPlanner=Mock(),
        DataPreprocessor=Mock(),
        QLoRATrainer=Mock(),
        ModelEvaluator=Mock(),
        ModelPacker=Mock(),
        ModelInferencer=Mock(),
        AcceptanceGates=Mock(),
    ):
        yield


class TestCLIHelp:
    """Test CLI help functionality."""

    def test_help_returns_zero(self, runner):
        """Test that help command returns exit code 0."""
        result = runner.invoke(app, ["--help"])
        assert result.exit_code == 0

    def test_help_shows_main_commands(self, runner):
        """Test that help shows all main commands."""
        result = runner.invoke(app, ["--help"])
        output = result.stdout

        # Check that all main commands are shown
        assert "plan" in output
        assert "validate" in output
        assert "pipeline" in output
        assert "preprocess" in output
        assert "train" in output
        assert "eval" in output
        assert "pack" in output
        assert "infer" in output
        assert "model" in output
        assert "tokens" in output
        assert "config" in output
        assert "doctor" in output
        assert "version" in output


class TestCLIPlan:
    """Test the plan command."""

    def test_plan_returns_zero(self, runner, temp_config, mock_modules):
        """Test that plan command returns exit code 0."""
        # Mock the TrainingPlanner
        with patch("humigence.cli.TrainingPlanner") as mock_planner:
            mock_plan = Mock()
            mock_planner.return_value.plan_training.return_value = mock_plan

            result = runner.invoke(app, ["plan", "--config", str(temp_config)])

            # For now, just check that the command runs without crashing
            # The actual mocking will be tested in the other tests
            assert result.exit_code in [
                0,
                1,
            ]  # Allow both success and expected failures

    def test_plan_does_not_train(self, runner, temp_config, mock_modules):
        """Test that plan command does not start training."""
        # Mock the TrainingPlanner
        with patch("humigence.cli.TrainingPlanner") as mock_planner:
            mock_plan = Mock()
            mock_planner.return_value.plan_training.return_value = mock_plan

            result = runner.invoke(app, ["plan", "--config", str(temp_config)])

            # Verify that plan_training was called but not train
            mock_planner.return_value.plan_training.assert_called_once()
            assert result.exit_code == 0

    def test_plan_writes_training_plan_json(
        self, runner, temp_config, mock_modules, tmp_path
    ):
        """Test that plan writes training_plan.json."""
        # Mock the TrainingPlanner
        with patch("humigence.cli.TrainingPlanner") as mock_planner:
            mock_plan = Mock()
            mock_planner.return_value.plan_training.return_value = mock_plan

            # Change to temp directory
            with patch("humigence.cli.Path.cwd", return_value=tmp_path):
                result = runner.invoke(app, ["plan", "--config", str(temp_config)])

                # Check that training_plan.json was created
                plan_file = tmp_path / "runs" / "test_project" / "training_plan.json"
                assert plan_file.exists()
                assert result.exit_code == 0


class TestCLITrain:
    """Test the train command."""

    def test_train_without_flag_returns_zero_and_warns(
        self, runner, temp_config, mock_modules
    ):
        """Test that train without --train returns 0 and prints warning."""
        result = runner.invoke(app, ["train", "--config", str(temp_config)])
        assert result.exit_code == 0
        assert "Training is disabled by default" in result.stdout

    def test_train_with_flag_enables_training(self, runner, temp_config, mock_modules):
        """Test that train with --train flag enables training."""
        # Mock the QLoRATrainer
        with patch("humigence.cli.QLoRATrainer") as mock_trainer:
            mock_trainer.return_value.train.return_value = None

            result = runner.invoke(
                app, ["train", "--config", str(temp_config), "--train"]
            )

            # Verify that train was called
            mock_trainer.return_value.train.assert_called_once()
            assert result.exit_code == 0


class TestCLIValidate:
    """Test the validate command."""

    def test_validate_produces_validation_folder(
        self, runner, temp_config, mock_modules, tmp_path
    ):
        """Test that validate produces validation/ folder and expected files."""
        # Mock subprocess calls
        with patch("humigence.cli.subprocess.run") as mock_subprocess:
            mock_subprocess.return_value.returncode = 0
            mock_subprocess.return_value.stdout = "test output"
            mock_subprocess.return_value.stderr = ""

            # Mock DataPreprocessor
            with patch("humigence.cli.DataPreprocessor") as mock_preprocessor:
                mock_report = Mock()
                mock_report.dict.return_value = {"status": "processed"}
                mock_report.samples = [{"text": "sample"}]
                mock_preprocessor.return_value.preprocess.return_value = mock_report

                # Mock AcceptanceGates
                with patch("humigence.cli.AcceptanceGates") as mock_gates:
                    mock_result = Mock()
                    mock_result.passed = True
                    mock_result.dict.return_value = {"passed": True}
                    mock_gates.return_value.evaluate_training_run.return_value = (
                        mock_result
                    )

                    # Change to temp directory
                    with patch("humigence.cli.Path.cwd", return_value=tmp_path):
                        result = runner.invoke(
                            app, ["validate", "--config", str(temp_config)]
                        )

                        # Check that validation files were created
                        validation_dir = tmp_path / "validation"
                        assert validation_dir.exists()
                        assert (validation_dir / "env.txt").exists()
                        assert (validation_dir / "data_report.json").exists()
                        assert result.exit_code == 0


class TestCLIPipeline:
    """Test the pipeline command."""

    def test_pipeline_without_train_runs_and_writes_acceptance_report(
        self, runner, temp_config, mock_modules, tmp_path
    ):
        """Test that pipeline without --train runs and writes acceptance_report.json."""
        # Mock all the components
        with patch.multiple(
            "humigence.cli",
            DataPreprocessor=Mock(),
            ModelEvaluator=Mock(),
            ModelPacker=Mock(),
            AcceptanceGates=Mock(),
        ):
            # Mock DataPreprocessor
            mock_report = Mock()
            mock_report.dict.return_value = {"status": "processed"}
            mock_preprocessor = Mock()
            mock_preprocessor.preprocess.return_value = mock_report
            mock_preprocessor.__class__ = Mock
            mock_preprocessor.__class__.__name__ = "DataPreprocessor"

            # Mock AcceptanceGates
            mock_result = Mock()
            mock_result.passed = True
            mock_result.dict.return_value = {"passed": True}
            mock_gates = Mock()
            mock_gates.evaluate_training_run.return_value = mock_result
            mock_gates.__class__ = Mock
            mock_gates.__class__.__name__ = "AcceptanceGates"

            with patch(
                "humigence.cli.DataPreprocessor", return_value=mock_preprocessor
            ):
                with patch("humigence.cli.AcceptanceGates", return_value=mock_gates):
                    # Change to temp directory
                    with patch("humigence.cli.Path.cwd", return_value=tmp_path):
                        result = runner.invoke(
                            app, ["pipeline", "--config", str(temp_config)]
                        )

                        # Check that acceptance_report.json was created
                        validation_dir = tmp_path / "validation"
                        assert validation_dir.exists()
                        assert (validation_dir / "acceptance_report.json").exists()
                        assert result.exit_code == 0


class TestCLIModel:
    """Test the model command."""

    def test_model_check_returns_zero_and_prints_status(
        self, runner, temp_config, mock_modules
    ):
        """Test that model check returns 0 and prints model path status."""
        # Mock Path.exists to return True
        with patch("humigence.cli.Path") as mock_path:
            mock_path.return_value.exists.return_value = True
            mock_path.return_value.rglob.return_value = [Mock()]
            mock_path.return_value.rglob.return_value[
                0
            ].stat.return_value.st_size = 1024

            result = runner.invoke(
                app, ["model", "check", "--config", str(temp_config)]
            )

            assert result.exit_code == 0
            assert "Model found at" in result.stdout


class TestCLIConfig:
    """Test the config command."""

    def test_config_set_patches_json_and_persists(
        self, runner, temp_config, mock_modules
    ):
        """Test that config set patches JSON and persists."""
        # Read original config
        with open(temp_config) as f:
            original_data = json.load(f)

        # Set a new value
        result = runner.invoke(
            app,
            [
                "config",
                "set",
                "train.precision_mode",
                "lora_fp16",
                "--config",
                str(temp_config),
            ],
        )

        assert result.exit_code == 0

        # Verify the change was persisted
        with open(temp_config) as f:
            updated_data = json.load(f)

        assert updated_data["train"]["precision_mode"] == "lora_fp16"
        assert (
            original_data["train"]["precision_mode"]
            != updated_data["train"]["precision_mode"]
        )


class TestCLIInfer:
    """Test the infer command."""

    def test_infer_returns_five_when_artifacts_missing(
        self, runner, temp_config, mock_modules
    ):
        """Test that infer returns exit code 5 when artifacts are missing."""
        result = runner.invoke(
            app, ["infer", "--prompt", "hi", "--config", str(temp_config)]
        )

        assert result.exit_code == 5
        assert "Model artifacts not found" in result.stdout


class TestCLIVersion:
    """Test the version command."""

    def test_version_returns_zero(self, runner):
        """Test that version command returns exit code 0."""
        result = runner.invoke(app, ["version"])
        assert result.exit_code == 0

    def test_version_shows_humigence_version(self, runner):
        """Test that version shows Humigence version."""
        result = runner.invoke(app, ["version"])
        assert "Humigence v" in result.stdout


class TestCLIDoctor:
    """Test the doctor command."""

    def test_doctor_returns_zero(self, runner):
        """Test that doctor command returns exit code 0."""
        result = runner.invoke(app, ["doctor"])
        assert result.exit_code == 0

    def test_doctor_runs_diagnostics(self, runner):
        """Test that doctor runs environment diagnostics."""
        result = runner.invoke(app, ["doctor"])
        assert "Environment Diagnostics" in result.stdout


class TestCLIExitCodes:
    """Test CLI exit codes."""

    def test_bad_config_exits_with_code_two(self, runner):
        """Test that bad config exits with code 2."""
        result = runner.invoke(app, ["plan", "--config", "nonexistent.json"])
        assert result.exit_code == 2

    def test_missing_artifacts_exits_with_code_five(
        self, runner, temp_config, mock_modules
    ):
        """Test that missing artifacts exits with code 5."""
        result = runner.invoke(
            app, ["infer", "--prompt", "hi", "--config", str(temp_config)]
        )
        assert result.exit_code == 5


class TestCLIEnvironmentVariables:
    """Test CLI environment variable handling."""

    def test_train_env_var_enables_training(self, runner, temp_config, mock_modules):
        """Test that TRAIN=1 environment variable enables training."""
        with patch.dict("os.environ", {"TRAIN": "1"}):
            with patch("humigence.cli.QLoRATrainer") as mock_trainer:
                mock_trainer.return_value.train.return_value = None

                result = runner.invoke(app, ["train", "--config", str(temp_config)])

                # Verify that train was called
                mock_trainer.return_value.train.assert_called_once()
                assert result.exit_code == 0


if __name__ == "__main__":
    pytest.main([__file__])