fix aligment differences in x32 and x64

Author: xieyuschen

iceoryx2/src/service/static_config/message_type_details.rs

@@ -143,6 +143,11 @@ mod tests {
     use super::*;
     use iceoryx2_bb_testing::assert_that;
 
+    #[cfg(target_pointer_width = "32")]
+    const ALIGNMENT: usize = 4;
+    #[cfg(target_pointer_width = "64")]
+    const ALIGNMENT: usize = 8;
+
     #[test]
     fn test_from() {
         #[repr(C)]
@@ -158,19 +163,19 @@ mod tests {
                 variant: TypeVariant::FixedSize,
                 type_name: "i32".to_string(),
                 size: 4,
-                alignment: 4,
+                alignment: 4, // i32 uses 4 bytes, so its aliment is always 4 no matter x32 or x64.
             },
             user_header: TypeDetail{
                 variant: TypeVariant::FixedSize,
                 type_name: "i64".to_string(),
                 size: 8,
-                alignment: 8,
+                alignment: ALIGNMENT,
             },
             payload: TypeDetail{
                 variant: TypeVariant::FixedSize,
                 type_name: "iceoryx2::service::static_config::message_type_details::tests::test_from::MyPayload".to_string(),
                 size: 16,
-                alignment: 8,
+                alignment: ALIGNMENT,
             },
         };
         assert_that!(sut, eq expected);
@@ -181,7 +186,7 @@ mod tests {
                 variant: TypeVariant::FixedSize,
                 type_name: "i32".to_string(),
                 size: 4,
-                alignment: 4,
+                alignment: ALIGNMENT,
             },
             user_header: TypeDetail {
                 variant: TypeVariant::FixedSize,
@@ -193,7 +198,7 @@ mod tests {
                 variant: TypeVariant::Dynamic,
                 type_name: "&[iceoryx2::service::static_config::message_type_details::tests::test_from::MyPayload]".to_string(),
                 size: 16,
-                alignment: 8,
+                alignment: ALIGNMENT,
             },
         };
         assert_that!(sut, eq expected);

iceoryx2/tests/service_static_config_tests.rs

@@ -15,6 +15,11 @@ mod service_static_config_message_type_details {
     use iceoryx2::service::static_config::message_type_details::{TypeDetail, TypeVariant};
     use iceoryx2_bb_testing::assert_that;
 
+    #[cfg(target_pointer_width = "32")]
+    const ALIGNMENT: usize = 4;
+    #[cfg(target_pointer_width = "64")]
+    const ALIGNMENT: usize = 8;
+
     #[test]
     fn test_internal_new() {
         #[repr(C)]
@@ -33,7 +38,7 @@ mod service_static_config_message_type_details {
             variant: TypeVariant::FixedSize,
             type_name: "i64".to_string(),
             size: 8,
-            alignment: 8,
+            alignment: ALIGNMENT,
         };
 
         assert_that!(sut, eq expected);
@@ -44,7 +49,7 @@ mod service_static_config_message_type_details {
             type_name: "iceoryx2::service::static_config::message_type_details::TypeDetail"
                 .to_string(),
             size: 48,
-            alignment: 8,
+            alignment: ALIGNMENT,
         };
 
         assert_that!(sut, eq expected);