mirror of
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50 lines
2.0 KiB
Python
50 lines
2.0 KiB
Python
"""
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DOM 类型收紧后仍保留默认值、文本转换与非法节点的既有行为。
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"""
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from xml.dom import minidom
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import pytest
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from app.foundation.dom import DomUtils
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@pytest.mark.parametrize("default", [None, "", 0, False, object()])
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def test_missing_value_preserves_default_identity(default):
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"""
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缺失标签、空标签和空属性均返回调用方原始默认值。
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"""
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document = minidom.parseString('<xml><empty attr="" /></xml>')
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assert DomUtils.tag_value(document, "missing", default=default) is default
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assert DomUtils.tag_value(document, "empty", default=default) is default
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assert DomUtils.tag_value(document, "empty", "attr", default=default) is default
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@pytest.mark.parametrize("value", [None, "", 0, False, 8.5, "中文 & <文本>"])
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def test_node_values_round_trip_without_losing_false_values(value):
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"""
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仅 None 省略文本，数字和布尔值仍按历史 str 转换写入 XML。
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"""
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document = minidom.Document()
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root = DomUtils.add_node(document, document, "xml")
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node = DomUtils.add_node(document, root, "value", value)
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assert node.parentNode is root
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assert node.ownerDocument is document
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if value is None:
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assert node.firstChild is None
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else:
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assert node.firstChild.data == str(value)
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parsed = minidom.parseString(document.toxml())
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assert DomUtils.tag_value(parsed, "value", default="") == ("" if value is None else str(value))
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def test_tag_values_keep_cdata_attributes_and_unsupported_node_errors():
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"""
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文本和属性保留内容，嵌套元素不被悄悄替换为默认值。
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"""
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document = minidom.parseString('<xml><text attr="原值"><![CDATA[文本 & 内容]]></text><nested><child/></nested></xml>')
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assert DomUtils.tag_value(document, "text") == "文本 & 内容"
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assert DomUtils.tag_value(document, "text", "attr") == "原值"
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with pytest.raises(AttributeError):
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DomUtils.tag_value(document, "nested", default="fallback")
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