diff --git a/crates/json/src/json_to_value.rs b/crates/json/src/json_to_value.rs
index 607ee3e6..d97bf2f1 100644
--- a/crates/json/src/json_to_value.rs
+++ b/crates/json/src/json_to_value.rs
@@ -98,6 +98,14 @@ pub fn convert_json_value_to_value(
         }
         Struct(layout) => match layout {
             WithTypes { fields, type_ } => {
+                // The move compiler inserts a dummy field with the value of false
+                // for structs with no fields.
+                if fields.len() == 1 && fields[0].name.as_str() == "dummy_field" {
+                    return Ok(Value::struct_(Struct::pack(vec![
+                        Value::bool(false)
+                    ])));
+                }
+
                 let full_name =
                     format!("{}::{}", type_.module_id().short_str_lossless(), type_.name);
                 match full_name.as_str() {
diff --git a/crates/json/src/move_to_json.rs b/crates/json/src/move_to_json.rs
index f826c897..d4ed7780 100644
--- a/crates/json/src/move_to_json.rs
+++ b/crates/json/src/move_to_json.rs
@@ -59,6 +59,12 @@ fn convert_move_value_to_json_value(val: &MoveValue, depth: usize) -> VMResult<J
                 Ok(JSONValue::Array(fields_array))
             }
             MoveStruct::WithFields(fields) | MoveStruct::WithVariantFields(_, _, fields) => {
+                // The move compiler inserts a dummy field with the value of false
+                // for structs with no fields.
+                if fields.len() == 1 && fields[0].0.as_str() == "dummy_field" {
+                    return Ok(JSONValue::Object(Map::new()));
+                }
+
                 let mut fields_map: Map<String, JSONValue> = Map::new();
                 for (id, mv) in fields.iter() {
                     let value = convert_move_value_to_json_value(mv, depth + 1)?;
@@ -68,6 +74,12 @@ fn convert_move_value_to_json_value(val: &MoveValue, depth: usize) -> VMResult<J
                 Ok(JSONValue::Object(fields_map))
             }
             MoveStruct::WithTypes { type_, fields } => {
+                // The move compiler inserts a dummy field with the value of false
+                // for structs with no fields.
+                if fields.len() == 1 && fields[0].0.as_str() == "dummy_field" {
+                    return Ok(JSONValue::Object(Map::new()));
+                }
+
                 // check the struct type is string
                 // if yes, then convert move value to json string
                 // else, execute convert function recursively
diff --git a/crates/natives/src/event.rs b/crates/natives/src/event.rs
index 5809c840..eae453e2 100644
--- a/crates/natives/src/event.rs
+++ b/crates/natives/src/event.rs
@@ -27,6 +27,9 @@ const EUNABLE_TO_EMIT_EVENT_DELAYED_FIELD: u64 = (ECATEGORY_INVALID_ARGUMENT <<
 #[derive(Default, Tid)]
 pub struct NativeEventContext {
     events: Vec<(ContractEvent, MoveTypeLayout)>,
+
+    #[cfg(feature = "testing")]
+    events_for_testing: Vec<(Vec<u8>, TypeTag)>,
 }
 
 impl NativeEventContext {
@@ -35,11 +38,11 @@ impl NativeEventContext {
     }
 
     #[cfg(feature = "testing")]
-    fn emitted_events(&self, ty_tag: &TypeTag) -> Vec<(&str, &MoveTypeLayout)> {
-        let mut events = vec![];
-        for (event, ty_layout) in self.events.iter() {
-            if event.type_tag() == ty_tag {
-                events.push((event.event_data(), ty_layout));
+    fn emitted_events(&self, ty_tag: &TypeTag) -> Vec<&[u8]> {
+        let mut events: Vec<&[u8]> = vec![];
+        for (data, tt) in self.events_for_testing.iter() {
+            if tt == ty_tag {
+                events.push(data);
             }
         }
         events
@@ -116,6 +119,19 @@ fn native_emit_event(
     })?;
 
     let ctx = context.extensions_mut().get_mut::<NativeEventContext>();
+
+    // Cache the emitted event for testing.
+    #[cfg(feature = "testing")]
+    {
+        let blob = msg.simple_serialize(&layout).ok_or_else(|| {
+            SafeNativeError::InvariantViolation(PartialVMError::new(
+                StatusCode::VALUE_SERIALIZATION_ERROR,
+            ))
+        })?;
+
+        ctx.events_for_testing.push((blob, type_tag.clone()));
+    }
+
     ctx.events.push((
         ContractEvent::new(type_tag, serde_value.to_string()),
         annotated_layout,
@@ -130,18 +146,18 @@ fn native_emitted_events(
     ty_args: Vec<Type>,
     arguments: VecDeque<Value>,
 ) -> SafeNativeResult<SmallVec<[Value; 1]>> {
-    use initia_move_json::deserialize_json_to_value;
-
     debug_assert!(ty_args.len() == 1);
     debug_assert!(arguments.is_empty());
 
-    let ty_tag = context.type_to_type_tag(&ty_args[0])?;
+    let ty = &ty_args[0];
+    let ty_tag = context.type_to_type_tag(ty)?;
+    let ty_layout = context.type_to_type_layout(ty)?;
     let ctx = context.extensions_mut().get_mut::<NativeEventContext>();
     let events = ctx
         .emitted_events(&ty_tag)
         .into_iter()
-        .map(|(str, ty_layout)| {
-            deserialize_json_to_value(ty_layout, str.as_bytes()).map_err(|_| {
+        .map(|blob| {
+            Value::simple_deserialize(blob, &ty_layout).ok_or_else(|| {
                 SafeNativeError::InvariantViolation(PartialVMError::new(
                     StatusCode::VALUE_DESERIALIZATION_ERROR,
                 ))
diff --git a/precompile/binaries/minlib/block.mv b/precompile/binaries/minlib/block.mv
index 9417962a..9d4419e0 100644
Binary files a/precompile/binaries/minlib/block.mv and b/precompile/binaries/minlib/block.mv differ
diff --git a/precompile/binaries/stdlib/block.mv b/precompile/binaries/stdlib/block.mv
index 9417962a..9d4419e0 100644
Binary files a/precompile/binaries/stdlib/block.mv and b/precompile/binaries/stdlib/block.mv differ
diff --git a/precompile/modules/initia_stdlib/sources/account.move b/precompile/modules/initia_stdlib/sources/account.move
index 0c66d28e..4d76c8cc 100644
--- a/precompile/modules/initia_stdlib/sources/account.move
+++ b/precompile/modules/initia_stdlib/sources/account.move
@@ -398,4 +398,11 @@ module initia_std::account {
         create_table_account(new_address);
         create_object_account(new_address);
     }
+
+    // functions for compatibility with the aptos
+
+    #[test_only]
+    public fun create_account_for_test(new_address: address): signer {
+        create_signer_for_test(new_address)
+    }
 }
diff --git a/precompile/modules/initia_stdlib/sources/block.move b/precompile/modules/initia_stdlib/sources/block.move
index 225fd405..4cce4797 100644
--- a/precompile/modules/initia_stdlib/sources/block.move
+++ b/precompile/modules/initia_stdlib/sources/block.move
@@ -12,4 +12,32 @@ module initia_std::block {
         assert!(height == 12321u64, 0);
         assert!(timestamp == 9999999u64, 1);
     }
+
+    // Functions for compatibility with the aptos
+
+    #[view]
+    public fun get_current_block_height(): u64 {
+        let (height, _) = get_block_info();
+        height
+    }
+
+    #[view]
+    public fun get_current_block_timestamp(): u64 {
+        let (_, timestamp) = get_block_info();
+        timestamp
+    }
+
+    #[test_only]
+    public fun initialize_for_test(
+        _vm: &signer, _epoch_interval_microsecs: u64
+    ) {
+        // no-op
+    }
+
+    #[test_only]
+    public fun emit_writeset_block_event(
+        _vm: &signer, _fake_block_hash: address
+    ) {
+        // no-op
+    }
 }
diff --git a/precompile/modules/initia_stdlib/sources/code.move b/precompile/modules/initia_stdlib/sources/code.move
index 2d3e34c9..21c0734e 100644
--- a/precompile/modules/initia_stdlib/sources/code.move
+++ b/precompile/modules/initia_stdlib/sources/code.move
@@ -177,9 +177,7 @@ module initia_std::code {
             &mut registry.metadata, option::none(), option::none(), 1
         );
         loop {
-            if (!table::prepare_mut(iter)) {
-                break;
-            };
+            if (!table::prepare_mut(iter)) { break };
 
             let (_, metadata) = table::next_mut(iter);
             metadata.upgrade_policy = UPGRADE_POLICY_IMMUTABLE;
diff --git a/precompile/modules/initia_stdlib/sources/compatibility/reconfiguration.move b/precompile/modules/initia_stdlib/sources/compatibility/reconfiguration.move
new file mode 100644
index 00000000..ae6bb987
--- /dev/null
+++ b/precompile/modules/initia_stdlib/sources/compatibility/reconfiguration.move
@@ -0,0 +1,6 @@
+#[test_only]
+module initia_std::reconfiguration {
+    public fun initialize_for_test(_: &signer) {
+        // no-op
+    }
+}
diff --git a/precompile/modules/initia_stdlib/sources/json.move b/precompile/modules/initia_stdlib/sources/json.move
index 76f69b9e..b39302e1 100644
--- a/precompile/modules/initia_stdlib/sources/json.move
+++ b/precompile/modules/initia_stdlib/sources/json.move
@@ -52,6 +52,18 @@ module initia_std::json {
         c: vector<u8>,
     }
 
+    #[test_only]
+    struct EmptyObject has copy, drop {}
+
+    #[test]
+    fun test_empty_marshal_unmarshal_empty() {
+        let json = marshal(&EmptyObject{});
+        assert!(json == b"{}", 1);
+
+        let val = unmarshal<EmptyObject>(json);
+        assert!(val == EmptyObject{}, 2);
+    }
+
     #[test]
     fun test_marshal_unmarshal_u64() {
         let json = marshal(&10u64);
diff --git a/precompile/modules/minitia_stdlib/sources/account.move b/precompile/modules/minitia_stdlib/sources/account.move
index c04476db..495e6d95 100644
--- a/precompile/modules/minitia_stdlib/sources/account.move
+++ b/precompile/modules/minitia_stdlib/sources/account.move
@@ -397,4 +397,11 @@ module minitia_std::account {
         create_table_account(new_address);
         create_object_account(new_address);
     }
+
+    // functions for compatibility with the aptos
+
+    #[test_only]
+    public fun create_account_for_test(new_address: address): signer {
+        create_signer_for_test(new_address)
+    }
 }
diff --git a/precompile/modules/minitia_stdlib/sources/block.move b/precompile/modules/minitia_stdlib/sources/block.move
index 4e461a46..a647d256 100644
--- a/precompile/modules/minitia_stdlib/sources/block.move
+++ b/precompile/modules/minitia_stdlib/sources/block.move
@@ -12,4 +12,32 @@ module minitia_std::block {
         assert!(height == 12321u64, 0);
         assert!(timestamp == 9999999u64, 1);
     }
+
+    // Functions for compatibility with the aptos
+
+    #[view]
+    public fun get_current_block_height(): u64 {
+        let (height, _) = get_block_info();
+        height
+    }
+
+    #[view]
+    public fun get_current_block_timestamp(): u64 {
+        let (_, timestamp) = get_block_info();
+        timestamp
+    }
+
+    #[test_only]
+    public fun initialize_for_test(
+        _vm: &signer, _epoch_interval_microsecs: u64
+    ) {
+        // no-op
+    }
+
+    #[test_only]
+    public fun emit_writeset_block_event(
+        _vm: &signer, _fake_block_hash: address
+    ) {
+        // no-op
+    }
 }
diff --git a/precompile/modules/minitia_stdlib/sources/code.move b/precompile/modules/minitia_stdlib/sources/code.move
index dad3e333..3c842a40 100644
--- a/precompile/modules/minitia_stdlib/sources/code.move
+++ b/precompile/modules/minitia_stdlib/sources/code.move
@@ -177,9 +177,7 @@ module minitia_std::code {
             &mut registry.metadata, option::none(), option::none(), 1
         );
         loop {
-            if (!table::prepare_mut(iter)) {
-                break;
-            };
+            if (!table::prepare_mut(iter)) { break };
 
             let (_, metadata) = table::next_mut(iter);
             metadata.upgrade_policy = UPGRADE_POLICY_IMMUTABLE;
diff --git a/precompile/modules/minitia_stdlib/sources/compatibility/reconfiguration.move b/precompile/modules/minitia_stdlib/sources/compatibility/reconfiguration.move
new file mode 100644
index 00000000..b36fac9f
--- /dev/null
+++ b/precompile/modules/minitia_stdlib/sources/compatibility/reconfiguration.move
@@ -0,0 +1,6 @@
+#[test_only]
+module minitia_std::reconfiguration {
+    public fun initialize_for_test(_: &signer) {
+        // no-op
+    }
+}
diff --git a/precompile/modules/minitia_stdlib/sources/json.move b/precompile/modules/minitia_stdlib/sources/json.move
index 3ec8d28c..fcba9eb7 100644
--- a/precompile/modules/minitia_stdlib/sources/json.move
+++ b/precompile/modules/minitia_stdlib/sources/json.move
@@ -52,6 +52,18 @@ module minitia_std::json {
         c: vector<u8>,
     }
 
+    #[test_only]
+    struct EmptyObject has copy, drop {}
+
+    #[test]
+    fun test_empty_marshal_unmarshal_empty() {
+        let json = marshal(&EmptyObject{});
+        assert!(json == b"{}", 1);
+
+        let val = unmarshal<EmptyObject>(json);
+        assert!(val == EmptyObject{}, 2);
+    }
+
     #[test]
     fun test_marshal_unmarshal_u64() {
         let json = marshal(&10u64);