"""
YAML Loader metadata 验证测试
"""

import pytest
from loaders.yaml_loader import validate_metadata, YAMLError


class TestValidateMetadata:
    """validate_metadata 函数测试类"""

    def test_valid_metadata_16_9(self):
        """测试有效的 16:9 metadata"""
        metadata = {
            "size": "16:9",
            "description": "测试文档"
        }
        # 应该不抛出异常
        validate_metadata(metadata, "test.yaml", context="文档")

    def test_valid_metadata_4_3(self):
        """测试有效的 4:3 metadata"""
        metadata = {
            "size": "4:3",
            "version": "1.0",
            "author": "测试作者"
        }
        # 应该不抛出异常
        validate_metadata(metadata, "test.yaml", context="模板库")

    def test_metadata_missing_size(self):
        """测试 metadata 缺少 size 字段"""
        metadata = {
            "description": "测试文档"
        }
        with pytest.raises(YAMLError, match="metadata 缺少必填字段 'size'"):
            validate_metadata(metadata, "test.yaml", context="文档")

    def test_metadata_invalid_size(self):
        """测试 metadata size 值无效"""
        metadata = {
            "size": "21:9"
        }
        with pytest.raises(YAMLError, match="metadata.size 必须是 '16:9' 或 '4:3'"):
            validate_metadata(metadata, "test.yaml", context="文档")

    def test_metadata_not_dict(self):
        """测试 metadata 不是字典"""
        metadata = "invalid"
        with pytest.raises(YAMLError, match="metadata 必须是字典对象"):
            validate_metadata(metadata, "test.yaml", context="文档")

    def test_metadata_with_optional_fields(self):
        """测试 metadata 包含可选字段"""
        metadata = {
            "size": "16:9",
            "version": "1.0",
            "author": "作者",
            "description": "描述",
            "fonts": {},
            "fonts_default": "@body"
        }
        # 应该不抛出异常
        validate_metadata(metadata, "test.yaml", context="文档")