# =====================================================
# Apckeyl Framework
# Version 1.0
# test_compute_provider_manager.py
# =====================================================

"""
Tests for Compute Provider Manager.

Version 1.0
"""

from compute_provider_manager import (
    ComputeProviderManager,
)

from compute_provider_registry import (
    ComputeProviderRegistry,
)

from example_compute_provider import (
    ExampleComputeProvider,
)


# =====================================================
# Test Manager Creation
# =====================================================

def test_manager_creation():

    registry = ComputeProviderRegistry()

    manager = ComputeProviderManager(
        registry
    )

    assert manager is not None

    assert manager.factory is not None

    assert manager.selector is not None


# =====================================================
# Test Missing Registry
# =====================================================

def test_manager_requires_registry():

    try:

        ComputeProviderManager(
            None
        )

        assert False

    except ValueError as error:

        assert str(error) == (
            "Registry is required"
        )


# =====================================================
# Test Register Provider
# =====================================================

def test_register_provider():

    registry = ComputeProviderRegistry()

    manager = ComputeProviderManager(
        registry
    )

    provider = ExampleComputeProvider()

    result = manager.register_provider(
        provider
    )

    assert result is provider

    assert manager.get_provider(
        "example_compute_provider"
    ) is provider


# =====================================================
# Test Get Provider
# =====================================================

def test_get_provider():

    registry = ComputeProviderRegistry()

    manager = ComputeProviderManager(
        registry
    )

    provider = ExampleComputeProvider()

    manager.register_provider(
        provider
    )

    result = manager.get_provider(
        "example_compute_provider"
    )

    assert result is provider


# =====================================================
# Test Unknown Provider
# =====================================================

def test_get_unknown_provider():

    registry = ComputeProviderRegistry()

    manager = ComputeProviderManager(
        registry
    )

    assert manager.get_provider(
        "unknown_provider"
    ) is None


# =====================================================
# Test Select Provider
# =====================================================

def test_select_provider():

    registry = ComputeProviderRegistry()

    manager = ComputeProviderManager(
        registry
    )

    provider = ExampleComputeProvider()

    manager.register_provider(
        provider
    )

    result = manager.select_provider(
        "example_task"
    )

    assert result is provider


# =====================================================
# Test Unsupported Task
# =====================================================

def test_select_unsupported_task():

    registry = ComputeProviderRegistry()

    manager = ComputeProviderManager(
        registry
    )

    provider = ExampleComputeProvider()

    manager.register_provider(
        provider
    )

    result = manager.select_provider(
        "unknown_task"
    )

    assert result is None


# =====================================================
# Test Availability
# =====================================================

def test_provider_availability():

    registry = ComputeProviderRegistry()

    manager = ComputeProviderManager(
        registry
    )

    provider = ExampleComputeProvider()

    manager.register_provider(
        provider
    )

    assert manager.is_available(
        "example_task"
    ) is True


# =====================================================
# Test Unavailable Task
# =====================================================

def test_provider_unavailable():

    registry = ComputeProviderRegistry()

    manager = ComputeProviderManager(
        registry
    )

    provider = ExampleComputeProvider()

    manager.register_provider(
        provider
    )

    assert manager.is_available(
        "unknown_task"
    ) is False


# =====================================================
# End of File
# =====================================================