prevent trailing dots in integers (#1267)

Author: samuelcolvin

src/input/shared.rs

@@ -120,7 +120,8 @@ fn clean_int_str(mut s: &str) -> Option<Cow<str>> {
     // we don't want to parse as f64 then call `float_as_int` as it can lose precision for large ints, therefore
     // we strip `.0+` manually instead
     if let Some(i) = s.find('.') {
-        if s[i + 1..].chars().all(|c| c == '0') {
+        let decimal_part = &s[i + 1..];
+        if !decimal_part.is_empty() && decimal_part.chars().all(|c| c == '0') {
             s = &s[..i];
         }
     }

tests/validators/test_int.py

@@ -26,12 +26,18 @@
         ('42', 42),
         (42.0, 42),
         ('42.0', 42),
+        ('42.00', 42),
         ('042', 42),
         ('4_2', 42),
         ('4_2.0', 42),
         ('04_2.0', 42),
+        ('  04_2.0 ', 42),
+        # because zeros are striped before underscores this is not allowed
+        ('  0_42.0 ', Err('Input should be a valid integer, unable to parse string as an integer')),
         ('000001', 1),
         ('123456789.0', 123_456_789),
+        ('1.', Err('Input should be a valid integer, unable to parse string as an integer')),
+        ('42.', Err('Input should be a valid integer, unable to parse string as an integer')),
         ('123456789123456.00001', Err('Input should be a valid integer, unable to parse string as an integer')),
         (int(1e10), int(1e10)),
         (i64_max, i64_max),