starknet_api: fix compiler->SNAPI contract class ABI string conversion for tests

Author: dorimedini-starkware

Cargo.lock

@@ -295,6 +295,7 @@ schemars = "0.8.12"
 semver = "1.0.23"
 serde = "1.0.197"
 serde_json = "1.0.116"
+serde-json-fmt = "0.1.0"
 serde_repr = "0.1.19"
 serde_with = "3.12.0"
 serde_yaml = "0.9.16"

Cargo.toml

@@ -7,7 +7,7 @@ license-file.workspace = true
 description = "Starknet Rust types related to computation and execution."
 
 [features]
-testing = []
+testing = ["serde-json-fmt"]
 
 [dependencies]
 apollo_infra_utils.workspace = true
@@ -31,6 +31,7 @@ rand.workspace = true
 semver.workspace = true
 serde = { workspace = true, features = ["derive", "rc"] }
 serde_json.workspace = true
+serde-json-fmt = { workspace = true, optional = true }
 sha3.workspace = true
 size-of.workspace = true
 starknet-crypto.workspace = true
@@ -43,6 +44,7 @@ time.workspace = true
 [dev-dependencies]
 assert_matches.workspace = true
 rstest.workspace = true
+serde-json-fmt.workspace = true
 
 [lints]
 workspace = true

crates/starknet_api/Cargo.toml

@@ -311,7 +311,18 @@ impl From<cairo_lang_starknet_classes::contract_class::ContractClass> for Sierra
                 .collect(),
             contract_class_version: cairo_lang_contract_class.contract_class_version,
             entry_points_by_type: cairo_lang_contract_class.entry_points_by_type.into(),
-            abi: cairo_lang_contract_class.abi.map(|abi| abi.json()).unwrap_or_default(),
+            abi: cairo_lang_contract_class
+                .abi
+                .map(|abi| {
+                    serde_json_fmt::JsonFormat::new()
+                        .comma(", ")
+                        .unwrap()
+                        .colon(": ")
+                        .unwrap()
+                        .format_to_string(&abi)
+                        .unwrap()
+                })
+                .unwrap_or_default(),
         }
     }
 }