Move Unicode 15 emoji test to SimpleString test

tildes/tests/test_simplestring_field.py

@@ -99,3 +99,8 @@ def test_consecutive_spaces_collapsed():
     """Ensure runs of consecutive spaces are "collapsed" inside the string."""
     original = "I    wanted   to      space    this        out"
     assert process_string(original) == "I wanted to space this out"
+
+
+def test_unicode_15_moose_kept():
+    """Ensure newer emoji introduced in Unicode 15 are kept."""
+    assert process_string("🫎") == "🫎"

tildes/tests/test_string.py

@@ -8,7 +8,6 @@ from tildes.lib.string import (
     truncate_string_at_char,
     word_count,
     extract_text_from_html,
-    _sanitize_characters,
 )
 
 
@@ -174,8 +173,3 @@ def test_extract_text_from_html_exclude_details():
     html = "<details><p>Hide me!</p></details>"
     text = extract_text_from_html(html, exclude_details_include_summary=True)
     assert text == "Details"
-
-
-def test_sanitize_characters_keeps_unicode_15_moose():
-    """Ensure _sanitize_characters keeps a newer emoji introduced in Unicode 15."""
-    assert _sanitize_characters("🫎") == "🫎"