test: add serialization/deserialization tests for int types

Author: paolobarbolini

Cargo.lock

@@ -19,6 +19,9 @@ utoipa = { version = "5", optional = true }
 benzina-derive = { path = "../benzina-derive", version = "=0.3.2", optional = true }
 uuid = { version = ">=0.7.0, <2.0.0", default-features = false, optional = true }
 
+[dev-dependencies]
+serde_test =  "1"
+
 [features]
 default = ["derive"]
 derive = ["dep:benzina-derive"]

benzina/Cargo.toml

@@ -68,3 +68,78 @@ impl_serde_numbers! {
     U31 => u32, deserialize_u32,
     U63 => u64, deserialize_u64
 }
+
+#[cfg(test)]
+mod tests {
+    use serde_test::{Token, assert_de_tokens, assert_ser_tokens};
+
+    use crate::{U15, U31, U63};
+
+    macro_rules! int_ser_tests {
+        ($($type:ident, $inner:ident, $token_type:ident, $test_name:ident),*) => {
+            $(
+                #[test]
+                fn $test_name() {
+                    const VALUE: $inner = $inner::MAX / 2;
+                    let v = $type::new(VALUE).unwrap();
+                    assert_ser_tokens(
+                        &v,
+                        &[
+                            Token::$token_type(VALUE),
+                        ],
+                    );
+                }
+            )*
+        }
+    }
+
+    macro_rules! int_de_tests {
+        ($($type:ident, $inner:ident, $token_type:ident, $token_type_inner:ident, $test_name:ident),*) => {
+            $(
+                #[test]
+                fn $test_name() {
+                    const VALUE: $inner = if ($token_type_inner::MAX as u128) < $inner::MAX as u128 {
+                        $token_type_inner::MAX as $inner
+                    } else {
+                        $inner::MAX
+                    } / 2;
+                    let v = $type::new(VALUE).unwrap();
+                    assert_de_tokens(&v, &[Token::$token_type(VALUE as _)]);
+                }
+            )*
+        }
+    }
+
+    int_ser_tests! {
+        U15, u16, U16, int_ser_u15,
+        U31, u32, U32, int_ser_u31,
+        U63, u64, U64, int_ser_u63
+    }
+
+    int_de_tests! {
+        U15, u16, U8, u8, int_de_u15_from_u8,
+        U15, u16, U16, u16, int_de_u15_from_u16,
+        U15, u16, U32, u32, int_de_u15_from_u32,
+        U15, u16, U64, u64, int_de_u15_from_u64,
+        U15, u16, I8, i8, int_de_u15_from_i8,
+        U15, u16, I16, i16, int_de_u15_from_i16,
+        U15, u16, I32, i32, int_de_u15_from_i32,
+        U15, u16, I64, i64, int_de_u15_from_i64,
+        U31, u32, U8, u8, int_de_u31_from_u8,
+        U31, u32, U16, u16, int_de_u31_from_u16,
+        U31, u32, U32, u32, int_de_u31_from_u32,
+        U31, u32, U64, u64, int_de_u31_from_u64,
+        U31, u32, I8, i8, int_de_u31_from_i8,
+        U31, u32, I16, i16, int_de_u31_from_i16,
+        U31, u32, I32, i32, int_de_u31_from_i32,
+        U31, u32, I64, i64, int_de_u31_from_i64,
+        U63, u64, U8, u8, int_de_u63_from_u8,
+        U63, u64, U16, u16, int_de_u63_from_u16,
+        U63, u64, U32, u32, int_de_u63_from_u32,
+        U63, u64, U64, u64, int_de_u63_from_u64,
+        U63, u64, I8, i8, int_de_u63_from_i8,
+        U63, u64, I16, i16, int_de_u63_from_i16,
+        U63, u64, I32, i32, int_de_u63_from_i32,
+        U63, u64, I64, i64, int_de_u63_from_i64
+    }
+}