Add widening tests for cast_sign_loss lint

tests/ui/cast.rs

@@ -42,34 +42,54 @@ fn main() {
     i32::max_value() as u32;
     i64::max_value() as u64;
     i128::max_value() as u128;
+
     (-1i8).abs() as u8;
     (-1i16).abs() as u16;
     (-1i32).abs() as u32;
     (-1i64).abs() as u64;
     (-1isize).abs() as usize;
+
     (-1i8).checked_abs().unwrap() as u8;
     (-1i16).checked_abs().unwrap() as u16;
     (-1i32).checked_abs().unwrap() as u32;
     (-1i64).checked_abs().unwrap() as u64;
     (-1isize).checked_abs().unwrap() as usize;
+
     (-1i8).rem_euclid(1i8) as u8;
+    (-1i8).rem_euclid(1i8) as u16;
     (-1i16).rem_euclid(1i16) as u16;
+    (-1i16).rem_euclid(1i16) as u32;
     (-1i32).rem_euclid(1i32) as u32;
+    (-1i32).rem_euclid(1i32) as u64;
     (-1i64).rem_euclid(1i64) as u64;
+    (-1i64).rem_euclid(1i64) as u128;
     (-1isize).rem_euclid(1isize) as usize;
     (1i8).rem_euclid(-1i8) as u8;
+    (1i8).rem_euclid(-1i8) as u16;
     (1i16).rem_euclid(-1i16) as u16;
+    (1i16).rem_euclid(-1i16) as u32;
     (1i32).rem_euclid(-1i32) as u32;
+    (1i32).rem_euclid(-1i32) as u64;
     (1i64).rem_euclid(-1i64) as u64;
+    (1i64).rem_euclid(-1i64) as u128;
     (1isize).rem_euclid(-1isize) as usize;
+
     (-1i8).checked_rem_euclid(1i8).unwrap() as u8;
+    (-1i8).checked_rem_euclid(1i8).unwrap() as u16;
     (-1i16).checked_rem_euclid(1i16).unwrap() as u16;
+    (-1i16).checked_rem_euclid(1i16).unwrap() as u32;
     (-1i32).checked_rem_euclid(1i32).unwrap() as u32;
+    (-1i32).checked_rem_euclid(1i32).unwrap() as u64;
     (-1i64).checked_rem_euclid(1i64).unwrap() as u64;
+    (-1i64).checked_rem_euclid(1i64).unwrap() as u128;
     (-1isize).checked_rem_euclid(1isize).unwrap() as usize;
     (1i8).checked_rem_euclid(-1i8).unwrap() as u8;
+    (1i8).checked_rem_euclid(-1i8).unwrap() as u16;
     (1i16).checked_rem_euclid(-1i16).unwrap() as u16;
+    (1i16).checked_rem_euclid(-1i16).unwrap() as u32;
     (1i32).checked_rem_euclid(-1i32).unwrap() as u32;
+    (1i32).checked_rem_euclid(-1i32).unwrap() as u64;
     (1i64).checked_rem_euclid(-1i64).unwrap() as u64;
+    (1i64).checked_rem_euclid(-1i64).unwrap() as u128;
     (1isize).checked_rem_euclid(-1isize).unwrap() as usize;
 }