Read chain_state genesis from a file (#973)

* chain state config

* remove nft config

* Add unit test

* fix imports

* fix lint

examples/demo-stf/src/genesis_config.rs

@@ -13,6 +13,7 @@ use sov_cli::wallet_state::PrivateKeyAndAddress;
 use sov_evm::{AccountData, EvmConfig, SpecId};
 pub use sov_modules_api::default_context::DefaultContext;
 use sov_modules_api::Context;
+use sov_nft_module::NonFungibleTokenConfig;
 use sov_rollup_interface::da::DaSpec;
 pub use sov_state::config::Config as StorageConfig;
 use sov_value_setter::ValueSetterConfig;
@@ -80,13 +81,10 @@ fn create_genesis_config<C: Context, Da: DaSpec>(
     let accounts_genesis_path = "../test-data/genesis/accounts.json";
     let accounts_config: AccountConfig<C> = read_json_file(accounts_genesis_path)?;
 
-    let nft_config = sov_nft_module::NonFungibleTokenConfig {};
-    // This will be read from a file: #872
-    let chain_state_config = ChainStateConfig {
-        // TODO: Put actual value
-        initial_slot_height: 0,
-        current_time: Default::default(),
-    };
+    let nft_config: NonFungibleTokenConfig = NonFungibleTokenConfig {};
+
+    let chain_state_path = "../test-data/genesis/chain_state.json";
+    let chain_state_config: ChainStateConfig = read_json_file(chain_state_path)?;
 
     Ok(GenesisConfig::new(
         bank_config,

examples/test-data/genesis/chain_state.json

@@ -0,0 +1,7 @@
+{
+    "initial_slot_height":0,
+    "current_time":{
+        "secs":0,
+        "nanos":0
+    }
+}

module-system/module-implementations/sov-chain-state/src/lib.rs

@@ -3,6 +3,8 @@
 
 /// Contains the call methods used by the module
 pub mod call;
+#[cfg(test)]
+mod tests;
 
 /// Genesis state configuration
 pub mod genesis;
@@ -147,7 +149,7 @@ pub struct ChainState<C: sov_modules_api::Context, Da: sov_modules_api::DaSpec>
 }
 
 /// Initial configuration of the chain state
-#[derive(Debug, Clone, Serialize, Deserialize)]
+#[derive(Debug, Clone, Serialize, Deserialize, Eq, PartialEq)]
 pub struct ChainStateConfig {
     /// Initial slot height
     pub initial_slot_height: TransitionHeight,

module-system/module-implementations/sov-chain-state/src/tests.rs

@@ -0,0 +1,24 @@
+use sov_rollup_interface::da::{NanoSeconds, Time};
+
+use crate::ChainStateConfig;
+
+#[test]
+fn test_config_serialization() {
+    let time = Time::new(2, NanoSeconds::new(3).unwrap());
+    let config = ChainStateConfig {
+        initial_slot_height: 1,
+        current_time: time,
+    };
+
+    let data = r#"
+    {
+        "initial_slot_height":1,
+        "current_time":{
+            "secs":2,
+            "nanos":3
+        }
+    }"#;
+
+    let parsed_config: ChainStateConfig = serde_json::from_str(data).unwrap();
+    assert_eq!(config, parsed_config)
+}