feat: create dump_config for mempool node config (#164)

Cargo.toml

@@ -7,6 +7,7 @@ members = [
     "crates/mempool_infra",
     "crates/starknet_sierra_compile",
     "crates/task_executor",
+    "crates/test_utils",
 ]
 resolver = "2"
 
@@ -28,6 +29,7 @@ as_conversions = "deny"
 
 [workspace.dependencies]
 anyhow = "1.0"
+assert-json-diff = "2.0.2"
 assert_matches = "1.5.0"
 async-trait = "0.1.79"
 axum = "0.6.12"
@@ -37,8 +39,9 @@ cairo-lang-sierra = "2.6.0"
 cairo-lang-starknet-classes = "2.6.0"
 cairo-lang-utils = "2.6.0"
 clap = "4.3.10"
-derive_more = "0.99"
+colored = "2.1.0"
 const_format = "0.2.30"
+derive_more = "0.99"
 hyper = { version = "0.14", features = ["client", "http1"] }
 papyrus_config = "0.3.0"
 pretty_assertions = "1.4.0"

crates/mempool_node/Cargo.toml

@@ -18,5 +18,9 @@ tokio.workspace = true
 validator.workspace = true
 
 [dev-dependencies]
+assert-json-diff.workspace = true
 assert_matches.workspace = true
+colored.workspace = true
 pretty_assertions.workspace = true
+serde_json.workspace = true
+test_utils = {path = "../test_utils"}

crates/mempool_node/src/config/config_test.rs

@@ -1,9 +1,18 @@
 #[cfg(any(feature = "testing", test))]
+use std::env::{self};
+use std::fs::File;
+
+use assert_json_diff::assert_json_eq;
 use assert_matches::assert_matches;
+use colored::Colorize;
+use papyrus_config::dumping::SerializeConfig;
 use papyrus_config::validators::{ParsedValidationError, ParsedValidationErrors};
+use test_utils::get_absolute_path;
 use validator::Validate;
 
-use crate::config::{ComponentConfig, ComponentExecutionConfig};
+use crate::config::{
+    ComponentConfig, ComponentExecutionConfig, MempoolNodeConfig, DEFAULT_CONFIG_PATH,
+};
 
 /// Test the validation of the struct ComponentConfig.
 /// The validation validates at least one of the components is set with execute: true.
@@ -41,3 +50,27 @@ fn test_components_config_validation() {
         assert!(component_config.validate().is_ok());
     }
 }
+
+/// Test the validation of the struct MempoolNodeConfig and that the default config file is up to
+/// date. To update the default config file, run:
+/// cargo run --bin dump_config -q
+#[test]
+fn default_config_file_is_up_to_date() {
+    let default_config = MempoolNodeConfig::default();
+    assert!(default_config.validate().is_ok());
+    let from_code: serde_json::Value = serde_json::to_value(default_config.dump()).unwrap();
+
+    env::set_current_dir(get_absolute_path("")).expect("Couldn't set working dir.");
+    let from_default_config_file: serde_json::Value =
+        serde_json::from_reader(File::open(DEFAULT_CONFIG_PATH).unwrap()).unwrap();
+
+    println!(
+        "{}",
+        "Default config file doesn't match the default NodeConfig implementation. Please update \
+         it using the dump_config binary."
+            .purple()
+            .bold()
+    );
+    println!("Diffs shown below.");
+    assert_json_eq!(from_default_config_file, from_code)
+}

crates/mempool_node/src/config/mod.rs

@@ -42,7 +42,7 @@ impl Default for ComponentExecutionConfig {
 }
 
 /// The components configuration.
-#[derive(Clone, Debug, Serialize, Deserialize, Validate, PartialEq, Default)]
+#[derive(Clone, Debug, Default, Serialize, Deserialize, Validate, PartialEq)]
 #[validate(schema(function = "validate_components_config"))]
 pub struct ComponentConfig {
     pub gateway_component: ComponentExecutionConfig,
@@ -72,7 +72,7 @@ pub fn validate_components_config(components: &ComponentConfig) -> Result<(), Va
 }
 
 /// The configurations of the various components of the node.
-#[derive(Debug, Deserialize, Serialize, Clone, PartialEq, Validate, Default)]
+#[derive(Debug, Deserialize, Default, Serialize, Clone, PartialEq, Validate)]
 pub struct MempoolNodeConfig {
     #[validate]
     pub components: ComponentConfig,

crates/test_utils/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "test_utils"
+version.workspace = true
+edition.workspace = true
+repository.workspace = true
+license.workspace = true
+
+[features]
+
+[dependencies]
+
+

crates/test_utils/src/lib.rs

@@ -0,0 +1,7 @@
+use std::env;
+use std::path::{Path, PathBuf};
+
+/// Returns the absolute path from the project root.
+pub fn get_absolute_path(relative_path: &str) -> PathBuf {
+    Path::new(&env::var("CARGO_MANIFEST_DIR").unwrap()).join("../..").join(relative_path)
+}