Makes use of default namespace declarations

and applies now canonical expression of empty/null prefixes where
the expressions aren't explicitly tested.

_delb/nodes.py

@@ -1883,7 +1883,7 @@ def attributes(self) -> TagAttributes:
 
         .. _Clark notation: http://www.jclark.com/xml/xmlns.htm
 
-        >>> DefaultStringOptions.namespaces = {None: "http://namespace"}
+        >>> DefaultStringOptions.namespaces = {"": "http://namespace"}
         >>> node = new_tag_node(
         ...     "node",
         ...     namespace="http://namespace",

delb/transform.py

@@ -25,7 +25,7 @@
    class ResolveCopyOf(Transformation):
        def transform(self):
            for node in self.root.css_select(
-               "*[copyOf]", namespaces={None: "http://www.tei-c.org/ns/1.0"}
+               "*[copyOf]", namespaces={"": "http://www.tei-c.org/ns/1.0"}
            ):
                source_id = node["copyOf"]
                source_node = self.origin_document.xpath(

tests/test_css_select.py

@@ -11,9 +11,7 @@
 def test_css_select_or(files_path):
     document = Document(files_path / "tei_stevenson_treasure_island.xml")
 
-    result = document.css_select(
-        "titleStmt title, titleStmt author", namespaces={None: TEI_NAMESPACE}
-    )
+    result = document.css_select("titleStmt title, titleStmt author")
 
     assert len(result) == 2
     assert {x.local_name for x in result} == {"author", "title"}

tests/test_document.py

@@ -175,17 +175,13 @@ def test_set_root():
 def test_xpath(files_path):
     document = Document(files_path / "marx_manifestws_1848.TEI-P5.xml")
 
-    for i, page_break in enumerate(
-        document.xpath("//pb", namespaces={None: TEI_NAMESPACE})
-    ):
+    for i, page_break in enumerate(document.xpath("//pb")):
         assert isinstance(page_break, TagNode)
         assert page_break.universal_name == "{http://www.tei-c.org/ns/1.0}pb"
 
     assert i == 22
 
-    for j, page_break in enumerate(
-        document.xpath('//pb[@n="I"]', namespaces={None: TEI_NAMESPACE})
-    ):
+    for j, page_break in enumerate(document.xpath('//pb[@n="I"]')):
         assert isinstance(page_break, TagNode)
         assert page_break.universal_name == "{http://www.tei-c.org/ns/1.0}pb"
         assert page_break.attributes["n"] == "I"

tests/test_reduce_whitespace.py

@@ -60,7 +60,7 @@ def test_nodes_in_between():
 def test_samples_from_Manifest_der_kommunistischen_Partei(files_path):  # noqa: N802
     document = Document(files_path / "marx_manifestws_1848.TEI-P5.xml")
     document.reduce_whitespace()
-    imprints = document.xpath("//docImprint", namespaces={None: TEI_NAMESPACE})
+    imprints = document.xpath("//docImprint")
 
     assert imprints[0].full_text == "Veröffentlicht im Februar 1848."
     assert "46, Liverpool Street" in imprints[1].full_text

tests/test_serialization.py

@@ -75,7 +75,7 @@ def test_empty_below_default_namespace():
     root = Document("<root xmlns='http://fo.org/'/>").root
     root.append_children(new_tag_node(local_name="node", namespace=None))
     # just to be explicit here:
-    DefaultStringOptions.namespace = {None: "http://fo.org/"}
+    DefaultStringOptions.namespace = {"": "http://fo.org/"}
     assert str(root) == '<ns0:root xmlns:ns0="http://fo.org/"><node/></ns0:root>'
 
 
@@ -248,7 +248,7 @@ def test_significant_whitespace_is_saved(result_file, format_options, out):
         ({}, new_tag_node, ("n", {"x": '"'}), """<n x="&quot;"/>"""),
         ({}, new_tag_node, ("n", {"x": '"&"'}), r"""<n x="&quot;&amp;&quot;"/>"""),
         (
-            {None: "http://namespace"},
+            {"": "http://namespace"},
             new_tag_node,
             ("node", {("http://namespace", "bar"): "x"}),
             """<node xmlns:ns0="http://namespace" ns0:bar="x"/>""",
@@ -396,7 +396,7 @@ def test_text_document_production(
 )
 def test_text_width(files_path, indentation, text_width, out):
     document = Document(files_path / "marx_manifestws_1848.TEI-P5.xml")
-    paragraph = document.xpath("//p", namespaces={None: TEI_NAMESPACE})[14]
+    paragraph = document.xpath("//p")[14]
     format_options = FormatOptions(indentation=indentation, width=text_width)
     DefaultStringOptions.format_options = format_options
     assert paragraph.serialize(format_options=format_options) == str(paragraph) == out
@@ -432,9 +432,7 @@ def test_text_with_milestone_tag(files_path, text_width, expected):
         files_path / "tei_stevenson_treasure_island.xml",
         parser_options=ParserOptions(reduce_whitespace=True),
     )
-    paragraph = document.css_select(
-        "fileDesc sourceDesc p", namespaces={None: TEI_NAMESPACE}
-    ).first
+    paragraph = document.css_select("fileDesc sourceDesc p").first
     assert "\t" not in paragraph.full_text
 
     DefaultStringOptions.format_options = FormatOptions(

tests/test_subclasses.py

@@ -26,18 +26,14 @@ def __class_test__(root: TagNode, config: types.SimpleNamespace) -> bool:
 
     @property
     def title(self) -> str:
-        return self.css_select(
-            'titleStmt title[type="main"]', namespaces={None: TEI_NAMESPACE}
-        ).first.full_text
+        return self.css_select('titleStmt title[type="main"]').first.full_text
 
 
 class DTABfDocument(TEIDocument):
     @staticmethod
     def __class_test__(root, config) -> bool:
         if TEIDocument.__class_test__(root, config):
-            for node in root.css_select(
-                "publicationStmt publisher[xml|id]", namespaces={None: TEI_NAMESPACE}
-            ):
+            for node in root.css_select("publicationStmt publisher[xml|id]"):
                 if node.id == "DTACorpusPublisher":
                     return True
         return False

tests/test_tag_node.py

@@ -280,9 +280,7 @@ def test_getitem():
 
 def test_id_property(files_path):
     document = Document(files_path / "marx_manifestws_1848.TEI-P5.xml")
-    publisher = document.css_select(
-        "publicationStmt publisher", namespaces={None: TEI_NAMESPACE}
-    ).first
+    publisher = document.css_select("publicationStmt publisher").first
 
     assert publisher.id == "DTACorpusPublisher"
 

tests/test_xpath_results.py

@@ -22,9 +22,7 @@ def test_as_sequences(queries_sample):
 
 def test_document_order(files_path):
     document = Document(files_path / "marx_manifestws_1848.TEI-P5.xml")
-    ordered_nodes = document.xpath(
-        "//pb", namespaces={None: TEI_NAMESPACE}
-    ).in_document_order()
+    ordered_nodes = document.xpath("//pb").in_document_order()
     assert all(n.local_name == "pb" for n in ordered_nodes)
     assert_nodes_are_in_document_order(*ordered_nodes)