Add comparison operators to _NormalizedString

Based on @hoangduytranuk's original implementation.

Fixes #612

1 files changed, 17 insertions, 0 deletions

diff --git a/tests/messages/test_normalized_string.py b/tests/messages/test_normalized_string.py
new file mode 100644
index 0000000..9c95672
--- /dev/null
+++ b/tests/messages/test_normalized_string.py
@@ -0,0 +1,17 @@
+from babel.messages.pofile import _NormalizedString
+
+
+def test_normalized_string():
+    ab1 = _NormalizedString('a', 'b ')
+    ab2 = _NormalizedString('a', ' b')
+    ac1 = _NormalizedString('a', 'c')
+    ac2 = _NormalizedString('  a', 'c  ')
+    z = _NormalizedString()
+    assert ab1 == ab2 and ac1 == ac2  # __eq__
+    assert ab1 < ac1  # __lt__
+    assert ac1 > ab2  # __gt__
+    assert ac1 >= ac2  # __ge__
+    assert ab1 <= ab2  # __le__
+    assert ab1 != ac1  # __ne__
+    assert not z  # __nonzero__ / __bool__
+    assert sorted([ab1, ab2, ac1])  # the sort order is not stable so we can't really check it, just that we can sort