Add development chain-spec file for minimal/parachain templates for Omni Node compatibility

templates/minimal/node/Cargo.toml

@@ -14,10 +14,12 @@ build = "build.rs"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
+codec = { features = ["derive"], workspace = true }
 docify = { workspace = true }
 clap = { features = ["derive"], workspace = true }
 futures = { features = ["thread-pool"], workspace = true }
 futures-timer = { workspace = true }
+serde = { features = ["derive"], workspace = true, default-features = true }
 jsonrpsee = { features = ["server"], workspace = true }
 serde_json = { workspace = true, default-features = true }
 

templates/minimal/node/tests/validate_dev_chain_spec.rs

@@ -0,0 +1,84 @@
+use codec::Decode;
+use sp_version::RuntimeVersion;
+use polkadot_sdk::*;
+use minimal_template_runtime::WASM_BINARY;
+use sc_service::ChainType;
+use sc_chain_spec::{
+    ChainSpecExtension,
+    ChainSpecGroup,
+    Properties,
+};
+use serde::{Deserialize, Serialize};
+use serde_json::Value;
+use core::str;
+use std::error::Error;
+
+pub type ChainSpec = sc_service::GenericChainSpec<Extensions>;
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize, ChainSpecGroup, ChainSpecExtension)]
+pub struct Extensions {
+    #[serde(alias = "relayChain", alias = "RelayChain")]
+    pub relay_chain: String,
+    #[serde(alias = "paraId", alias = "ParaId")]
+    pub para_id: u32,
+}
+
+impl Extensions {
+    pub fn try_get(chain_spec: &dyn sc_service::ChainSpec) -> Option<&Self> {
+        sc_chain_spec::get_extension(chain_spec.extensions())
+    }
+}
+
+fn decode_runtime_info(ch_spec_data: &ChainSpec) -> 
+    Result<(String, u32, u32), Box<dyn Error>> {
+    let chain_spec_as_json = ch_spec_data.as_json(false)
+        .expect("Failed to serialize existing chain spec");
+    let json_value: Value = serde_json::from_str(&chain_spec_as_json)?; // Deserialize the chain spec JSON string into a usable serde_Json Value object.
+
+    let runtime_hx_cde = json_value
+        .get("genesis").expect("failed to get genesis")
+        .get("runtimeGenesis").expect("failed to get runtimeGenesis")
+        .get("code").expect("failed to get code")
+        .as_str().expect("failed to turn to str");
+
+    let clean_u8 = runtime_hx_cde.trim_start_matches("0x").as_bytes(); // normalize runtime hex cde remove '0x' and convert to bytes.
+    let version_info: RuntimeVersion = RuntimeVersion::decode(&mut &clean_u8[..])
+    .map_err(|_| "Failed to decode runtime version")?;
+
+    let rt_spec_name = version_info.spec_name.into_owned();
+    let rt_spec_version = version_info.spec_version;
+    let rt_authoring_version = version_info.authoring_version;
+
+    Ok((rt_spec_name, rt_spec_version, rt_authoring_version))
+}
+
+#[test]
+fn test_minimal_dev_chain_spec_rt_validity() {
+    let mut properties = Properties::new();
+    properties.insert("tokenDecimals".to_string(), 12.into());
+    properties.insert("tokenSymbol".to_string(), "UNIT".into());
+    let current_wasm = WASM_BINARY.expect("Development wasm not available");
+
+    let test_chain_spec = ChainSpec::builder(
+        current_wasm,
+        Extensions {
+            relay_chain: "dev".into(),
+            para_id: 1000,
+        })
+        .with_name("test_Development")
+        .with_id("dev")
+        .with_chain_type(ChainType::Local)
+        .with_genesis_config_preset_name(sp_genesis_builder::DEV_RUNTIME_PRESET)
+        .with_properties(properties.clone())
+        .build();
+
+    let existing_chain_spec = ChainSpec::from_json_file(
+            "../dev_chain_spec.json".into()
+        ).expect("failed to find development chain spec");
+
+    let test_chain_data:(String, u32, u32) = decode_runtime_info(&test_chain_spec).expect("failed to retrieve test chain runtime info");
+    let current_chain_data:(String, u32, u32) = decode_runtime_info(&existing_chain_spec).expect("failed to retrieve current chain runtime info");
+
+    assert_eq!(test_chain_data, current_chain_data);
+}
+

templates/minimal/zombienet-omni-node.toml

@@ -1,7 +1,7 @@
 [relaychain]
 default_command = "polkadot-omni-node"
 chain = "dev"
-chain_spec_path = "<path/to/chain_spec.json>"
+chain_spec_path = "./dev_chain_spec.json"
 default_args = ["--dev-block-time 3000"]
 
 [[relaychain.nodes]]

templates/parachain/zombienet-omni-node.toml

@@ -14,7 +14,7 @@ ws_port = 9955
 
 [[parachains]]
 id = 1000
-chain_spec_path = "<path/to/chain_spec.json>"
+chain_spec_path = "./dev_chain_spec.json"
 
 [parachains.collator]
 name = "charlie"