+#[test]
+fn test_is_ascii_octdigit() {
+ assert_all!(is_ascii_octdigit, "", "01234567");
+ assert_none!(
+ is_ascii_octdigit,
+ "abcdefghijklmnopqrstuvwxyz",
+ "ABCDEFGHIJKLMNOQPRSTUVWXYZ",
+ "!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~",
+ " \t\n\x0c\r",
+ "\x00\x01\x02\x03\x04\x05\x06\x07",
+ "\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f",
+ "\x10\x11\x12\x13\x14\x15\x16\x17",
+ "\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f",
+ "\x7f",
+ );
+}
+