fix: avoid rounding in serializations

crates/gateway/Cargo.toml

@@ -23,7 +23,7 @@ papyrus_config.workspace = true
 papyrus_rpc.workspace = true
 reqwest.workspace = true
 serde.workspace = true
-serde_json.workspace = true
+serde_json = { workspace = true, features = ["arbitrary_precision"] }
 starknet_api.workspace = true
 starknet_mempool_infra = { path = "../mempool_infra", version = "0.0" }
 starknet_mempool_types = { path = "../mempool_types", version = "0.0" }

crates/gateway/src/utils_test.rs

@@ -76,3 +76,13 @@ fn test_is_subsequence(
 ) {
     assert_eq!(is_subsequence(subsequence, sequence), expected_result);
 }
+
+// Make sure we have the arbitrary precision feature of serde_json.
+#[test]
+fn serialization_precision() {
+    let input =
+        "{\"value\":244116128358498188146337218061232635775543270890529169229936851982759783745}";
+    let serialized = serde_json::from_str::<serde_json::Value>(input).unwrap();
+    let deserialized = serde_json::to_string(&serialized).unwrap();
+    assert_eq!(input, deserialized);
+}

crates/mempool_node/Cargo.toml

@@ -28,5 +28,5 @@ assert-json-diff.workspace = true
 assert_matches.workspace = true
 colored.workspace = true
 pretty_assertions.workspace = true
-serde_json.workspace = true
+serde_json = { workspace = true, features = ["arbitrary_precision"] }
 mempool_test_utils = { path = "../mempool_test_utils" }

crates/mempool_node/src/lib.rs

@@ -2,4 +2,6 @@ pub mod communication;
 pub mod components;
 pub mod config;
 pub mod servers;
+#[cfg(test)]
+mod test;
 pub mod version;

crates/mempool_node/src/test.rs

@@ -0,0 +1,9 @@
+// Make sure we have the arbitrary precision feature of serde_json.
+#[test]
+fn serialization_precision() {
+    let input =
+        "{\"value\":244116128358498188146337218061232635775543270890529169229936851982759783745}";
+    let serialized = serde_json::from_str::<serde_json::Value>(input).unwrap();
+    let deserialized = serde_json::to_string(&serialized).unwrap();
+    assert_eq!(input, deserialized);
+}

crates/mempool_test_utils/Cargo.toml

@@ -12,6 +12,6 @@ assert_matches.workspace = true
 blockifier.workspace = true
 starknet-types-core.workspace = true
 starknet_api.workspace = true
-serde_json.workspace = true
+serde_json = { workspace = true, features = ["arbitrary_precision"] }
 
 

crates/mempool_test_utils/src/lib.rs

@@ -2,6 +2,8 @@ use std::env;
 use std::path::{Path, PathBuf};
 
 pub mod starknet_api_test_utils;
+#[cfg(test)]
+mod test;
 
 pub const TEST_FILES_FOLDER: &str = "crates/mempool_test_utils/test_files";
 pub const CONTRACT_CLASS_FILE: &str = "contract_class.json";

crates/mempool_test_utils/src/test.rs

@@ -0,0 +1,9 @@
+// Make sure we have the arbitrary precision feature of serde_json.
+#[test]
+fn serialization_precision() {
+    let input =
+        "{\"value\":244116128358498188146337218061232635775543270890529169229936851982759783745}";
+    let serialized = serde_json::from_str::<serde_json::Value>(input).unwrap();
+    let deserialized = serde_json::to_string(&serialized).unwrap();
+    assert_eq!(input, deserialized);
+}

crates/starknet_sierra_compile/Cargo.toml

@@ -12,7 +12,7 @@ workspace = true
 cairo-lang-sierra.workspace = true
 cairo-lang-starknet-classes.workspace = true
 cairo-lang-utils.workspace = true
-serde_json.workspace = true
+serde_json = { workspace = true, features = ["arbitrary_precision"] }
 serde.workspace = true
 starknet_api.workspace = true
 starknet-types-core.workspace = true

crates/starknet_sierra_compile/src/compile_test.rs

@@ -37,3 +37,13 @@ fn test_negative_flow_compile_sierra_to_casm() {
         Err(CompilationUtilError::AllowedLibfuncsError(AllowedLibfuncsError::SierraProgramError))
     );
 }
+
+// Make sure we have the arbitrary precision feature of serde_json.
+#[test]
+fn serialization_precision() {
+    let input =
+        "{\"value\":244116128358498188146337218061232635775543270890529169229936851982759783745}";
+    let serialized = serde_json::from_str::<serde_json::Value>(input).unwrap();
+    let deserialized = serde_json::to_string(&serialized).unwrap();
+    assert_eq!(input, deserialized);
+}

crates/tests-integration/Cargo.toml

@@ -17,7 +17,7 @@ papyrus_common.workspace = true
 papyrus_rpc.workspace = true
 papyrus_storage.workspace = true
 reqwest.workspace = true
-serde_json.workspace = true
+serde_json = { workspace = true, features = ["arbitrary_precision"] }
 starknet_api.workspace = true
 starknet_client.workspace = true
 starknet_gateway = { path = "../gateway", version = "0.0", features = ["testing"] }

crates/tests-integration/tests/end_to_end_test.rs

@@ -23,3 +23,13 @@ async fn test_end_to_end() {
     expected_tx_hashes.sort();
     assert_eq!(expected_tx_hashes, actual_tx_hashes);
 }
+
+// Make sure we have the arbitrary precision feature of serde_json.
+#[test]
+fn serialization_precision() {
+    let input =
+        "{\"value\":244116128358498188146337218061232635775543270890529169229936851982759783745}";
+    let serialized = serde_json::from_str::<serde_json::Value>(input).unwrap();
+    let deserialized = serde_json::to_string(&serialized).unwrap();
+    assert_eq!(input, deserialized);
+}