tests/test_case.py: new spelling case test

2 files changed, 50 insertions, 0 deletions

diff --git a/tests/meson.build b/tests/meson.build
index 7ee6559c..a3d00c7a 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -37,6 +37,11 @@ test('No duplicate mime-types',
     args: freedesktop_org_xml,
 )
 
+test('Single spelling case',
+    find_program('test_case.py'),
+    args: freedesktop_org_xml,
+)
+
 test('Sanity check sub-class-of',
     find_program('test_sub_class_ofs.py'),
     args: freedesktop_org_xml,
diff --git a/tests/test_case.py b/tests/test_case.py
new file mode 100755
index 00000000..3235476b
--- /dev/null
+++ b/tests/test_case.py
@@ -0,0 +1,45 @@
+#!/usr/bin/env python3
+
+from collections import defaultdict
+import itertools
+import sys
+import xml.etree.ElementTree as ET
+
+FDO_XMLNS = "{http://www.freedesktop.org/standards/shared-mime-info}"
+
+
+def test_case(fdo_xml: str) -> int:
+
+    with open(fdo_xml, "rb") as f:
+        tree = ET.parse(f)
+
+    errors = 0
+
+    types = defaultdict(set)
+    for elem in itertools.chain(
+        tree.findall(f"{FDO_XMLNS}mime-type"),
+        tree.findall(f"{FDO_XMLNS}mime-type/{FDO_XMLNS}alias"),
+        tree.findall(f"{FDO_XMLNS}mime-type/{FDO_XMLNS}sub-class-of"),
+    ):
+        type_ = elem.attrib["type"]
+        types[type_.lower()].add(type_)
+    assert types
+
+    for type_, spellings in types.items():
+        if len(spellings) != 1:
+            print(
+                f"{fdo_xml}: multiple spellings differing only by case "
+                f"for {', '.join(sorted(spellings))}",
+                file=sys.stderr,
+            )
+            errors += 1
+
+    return errors
+
+
+if __name__ == "__main__":
+    if len(sys.argv) != 2:
+        print(f"Usage: {__file__} FREEDESKTOP_ORG_XML", file=sys.stderr)
+        sys.exit(2)
+
+    sys.exit(test_case(sys.argv[1]) and 1 or 0)