#
#  Copyright 2025 The InfiniFlow Authors. All Rights Reserved.
#
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.
#

"""
Standalone test to demonstrate the test framework works correctly.
This test doesn't require RAGFlow dependencies.
"""

import pytest
from unittest.mock import Mock, patch


class TestFrameworkDemo:
    """Demo tests to verify the test framework is working"""

    def test_basic_assertion(self):
        """Test basic assertion works"""
        assert 1 + 1 == 2

    def test_string_operations(self):
        """Test string operations"""
        text = "RAGFlow"
        assert text.lower() == "ragflow"
        assert len(text) == 7

    def test_list_operations(self):
        """Test list operations"""
        items = [1, 2, 3, 4, 5]
        assert len(items) == 5
        assert sum(items) == 15
        assert max(items) == 5

    def test_dictionary_operations(self):
        """Test dictionary operations"""
        data = {"name": "Test", "value": 123}
        assert "name" in data
        assert data["value"] == 123

    def test_mock_basic(self):
        """Test basic mocking works"""
        mock_obj = Mock()
        mock_obj.method.return_value = "mocked"
        
        result = mock_obj.method()
        assert result == "mocked"
        mock_obj.method.assert_called_once()

    def test_mock_with_spec(self):
        """Test mocking with specification"""
        mock_service = Mock()
        mock_service.save.return_value = True
        mock_service.get_by_id.return_value = (True, {"id": "123", "name": "Test"})
        
        # Test save
        assert mock_service.save(name="Test") is True
        
        # Test get
        exists, data = mock_service.get_by_id("123")
        assert exists is True
        assert data["name"] == "Test"

    @pytest.mark.parametrize("input_val,expected", [
        (1, 2),
        (2, 4),
        (3, 6),
        (5, 10),
    ])
    def test_parameterized(self, input_val, expected):
        """Test parameterized testing works"""
        result = input_val * 2
        assert result == expected

    def test_exception_handling(self):
        """Test exception handling"""
        with pytest.raises(ValueError):
            raise ValueError("Test error")

    def test_fixture_usage(self, sample_data):
        """Test fixture usage"""
        assert sample_data["name"] == "Test Item"
        assert sample_data["value"] == 100

    @pytest.fixture
    def sample_data(self):
        """Sample fixture for testing"""
        return {
            "name": "Test Item",
            "value": 100,
            "active": True
        }

    def test_patch_decorator(self):
        """Test patching with decorator"""
        # Create a simple mock to demonstrate patching
        mock_service = Mock()
        mock_service.process = Mock(return_value="original")
        
        # Patch the method
        with patch.object(mock_service, 'process', return_value="patched"):
            result = mock_service.process()
            assert result == "patched"

    def test_multiple_assertions(self):
        """Test multiple assertions in one test"""
        data = {
            "id": "123",
            "name": "RAGFlow",
            "version": "1.0",
            "active": True
        }
        
        # Multiple assertions
        assert data["id"] == "123"
        assert data["name"] == "RAGFlow"
        assert data["version"] == "1.0"
        assert data["active"] is True
        assert len(data) == 4

    def test_nested_structures(self):
        """Test nested data structures"""
        nested = {
            "user": {
                "id": "user123",
                "profile": {
                    "name": "Test User",
                    "email": "test@example.com"
                }
            },
            "settings": {
                "theme": "dark",
                "notifications": True
            }
        }
        
        assert nested["user"]["id"] == "user123"
        assert nested["user"]["profile"]["name"] == "Test User"
        assert nested["settings"]["theme"] == "dark"

    def test_boolean_logic(self):
        """Test boolean logic"""
        assert True and True
        assert not (True and False)
        assert True or False
        assert not False

    def test_comparison_operators(self):
        """Test comparison operators"""
        assert 5 > 3
        assert 3 < 5
        assert 5 >= 5
        assert 3 <= 3
        assert 5 == 5
        assert 5 != 3

    def test_membership_operators(self):
        """Test membership operators"""
        items = [1, 2, 3, 4, 5]
        assert 3 in items
        assert 6 not in items
        
        text = "RAGFlow is awesome"
        assert "RAGFlow" in text
        assert "bad" not in text

    def test_type_checking(self):
        """Test type checking"""
        assert isinstance(123, int)
        assert isinstance("text", str)
        assert isinstance([1, 2], list)
        assert isinstance({"key": "value"}, dict)
        assert isinstance(True, bool)

    def test_none_handling(self):
        """Test None value handling"""
        value = None
        assert value is None
        assert not value
        
        value = "something"
        assert value is not None
        assert value

    @pytest.mark.parametrize("status", ["pending", "completed", "failed"])
    def test_status_values(self, status):
        """Test different status values"""
        valid_statuses = ["pending", "completed", "failed"]
        assert status in valid_statuses

    def test_mock_call_count(self):
        """Test mock call counting"""
        mock_func = Mock()
        
        # Call multiple times
        mock_func("arg1")
        mock_func("arg2")
        mock_func("arg3")
        
        assert mock_func.call_count == 3

    def test_mock_call_args(self):
        """Test mock call arguments"""
        mock_func = Mock()
        
        mock_func("test", value=123)
        
        # Check call arguments
        mock_func.assert_called_once_with("test", value=123)


class TestAdvancedMocking:
    """Advanced mocking demonstrations"""

    def test_mock_return_values(self):
        """Test different return values"""
        mock_service = Mock()
        
        # Configure different return values
        mock_service.get.side_effect = [
            {"id": "1", "name": "First"},
            {"id": "2", "name": "Second"},
            {"id": "3", "name": "Third"}
        ]
        
        # Each call returns different value
        assert mock_service.get()["name"] == "First"
        assert mock_service.get()["name"] == "Second"
        assert mock_service.get()["name"] == "Third"

    def test_mock_exception(self):
        """Test mocking exceptions"""
        mock_service = Mock()
        mock_service.process.side_effect = ValueError("Processing failed")
        
        with pytest.raises(ValueError, match="Processing failed"):
            mock_service.process()

    def test_mock_attributes(self):
        """Test mocking object attributes"""
        mock_obj = Mock()
        mock_obj.name = "Test Object"
        mock_obj.value = 42
        mock_obj.active = True
        
        assert mock_obj.name == "Test Object"
        assert mock_obj.value == 42
        assert mock_obj.active is True


# Summary test
def test_framework_summary():
    """
    Summary test to confirm all framework features work.
    This test verifies that:
    - Basic assertions work
    - Mocking works
    - Parameterization works
    - Exception handling works
    - Fixtures work
    """
    # If we get here, all the above tests passed
    assert True, "Test framework is working correctly!"


if __name__ == "__main__":
    # Allow running directly
    pytest.main([__file__, "-v"])