refactor: return SourcifyChainMap from initializeSourcifyChains

services/server/src/server/cli.ts

@@ -13,18 +13,18 @@ import yamljs from "yamljs";
 
 // local imports
 import logger from "../common/logger";
-import {
-  initializeSourcifyChains,
-  sourcifyChainsMap,
-} from "../sourcify-chains";
+import { initializeSourcifyChains } from "../sourcify-chains";
+import type { SourcifyChainMap } from "@ethereum-sourcify/lib-sourcify";
 import type { LibSourcifyConfig } from "./server";
 import { Server } from "./server";
 import { SolcLocal } from "./services/compiler/local/SolcLocal";
 import { VyperLocal } from "./services/compiler/local/VyperLocal";
 import { FeLocal } from "./services/compiler/local/FeLocal";
 
-export const getEtherscanApiKeyForEachChain = (): Record<string, string> =>
-  Object.entries(sourcifyChainsMap).reduce<Record<string, string>>(
+export const getEtherscanApiKeyForEachChain = (
+  chainsMap: SourcifyChainMap,
+): Record<string, string> =>
+  Object.entries(chainsMap).reduce<Record<string, string>>(
     (acc, [chainId, { supported, etherscanApi }]) => {
       const envName = supported ? etherscanApi?.apiKeyEnvName : undefined;
       const value = envName ? process.env[envName] : undefined;
@@ -96,7 +96,7 @@ Object.defineProperty(RegExp.prototype, "toJSON", {
   });
 
   // Load chain config first so getEtherscanApiKeyForEachChain() sees the populated map
-  await initializeSourcifyChains();
+  const sourcifyChainsMap = await initializeSourcifyChains();
 
   const server = new Server(
     {
@@ -207,7 +207,7 @@ Object.defineProperty(RegExp.prototype, "toJSON", {
         EtherscanVerify: {
           defaultApiKey: process.env.ETHERSCAN_API_KEY as string,
           // Extract the etherscanApiKey env vars from the supported chains
-          apiKeys: getEtherscanApiKeyForEachChain(),
+          apiKeys: getEtherscanApiKeyForEachChain(sourcifyChainsMap),
         },
         BlockscoutVerify: {
           defaultApiKey: process.env.BLOCKSCOUT_API_KEY as string,

services/server/src/sourcify-chains.ts

@@ -202,10 +202,8 @@ function buildCustomRpcs(
   return rpcs;
 }
 
-export const sourcifyChainsMap: SourcifyChainMap = {};
-
 /**
- * Loads the chain configuration and populates sourcifyChainsMap.
+ * Loads the chain configuration and returns a populated SourcifyChainMap.
  *
  * Priority:
  *   1. Local sourcify-chains.json (self-hosted override)
@@ -214,8 +212,10 @@ export const sourcifyChainsMap: SourcifyChainMap = {};
  * Called by Server.init() so that both the CLI and test fixtures initialize chains
  * through the same code path.
  */
-export async function initializeSourcifyChains(): Promise<void> {
-  let chainsExtensions: SourcifyChainsExtensionsObjectWithHeaderEnvName;
+export async function initializeSourcifyChains(): Promise<SourcifyChainMap> {
+  let chainsExtensions:
+    | SourcifyChainsExtensionsObjectWithHeaderEnvName
+    | undefined;
 
   // Priority 1: local sourcify-chains.json (self-hosted override)
   if (fs.existsSync(path.resolve(__dirname, "./sourcify-chains.json"))) {
@@ -264,17 +264,14 @@ export async function initializeSourcifyChains(): Promise<void> {
         }
       }
     }
-    if (!chainsExtensions!) {
+    if (!chainsExtensions) {
       throw new Error(
         `Failed to fetch chains config after ${maxAttempts} attempts: ${lastError?.message}`,
       );
     }
   }
 
-  // Clear the map before populating (allows re-initialization)
-  for (const key of Object.keys(sourcifyChainsMap)) {
-    delete sourcifyChainsMap[key];
-  }
+  const sourcifyChainsMap: SourcifyChainMap = {};
 
   // Add LOCAL_CHAINS in non-production
   if (process.env.NODE_ENV !== "production") {
@@ -285,18 +282,18 @@ export async function initializeSourcifyChains(): Promise<void> {
 
   // Build SourcifyChain objects directly from the loaded extensions
   for (const [chainIdStr, extension] of Object.entries(chainsExtensions)) {
-    const chainId = parseInt(chainIdStr);
     // Skip local test chains (already added above)
-    if (chainId in sourcifyChainsMap) continue;
+    if (chainIdStr in sourcifyChainsMap) continue;
 
+    const chainId = parseInt(chainIdStr);
     const rpcs = buildCustomRpcs(extension.rpc || []);
     if (rpcs.length === 0 && extension.supported) {
       logger.warn(
         `Skipping supported chain ${chainId} (${extension.sourcifyName}): no usable RPCs configured`,
       );
       continue;
     }
-    sourcifyChainsMap[chainId] = new SourcifyChain({
+    sourcifyChainsMap[chainIdStr] = new SourcifyChain({
       name: extension.sourcifyName,
       chainId,
       supported: extension.supported,
@@ -309,4 +306,6 @@ export async function initializeSourcifyChains(): Promise<void> {
   logger.info("SourcifyChains loaded", {
     totalChains: Object.keys(chainsExtensions).length,
   });
+
+  return sourcifyChainsMap;
 }

services/server/test/chains/chain-tests.spec.ts

@@ -3,10 +3,7 @@ import chai from "chai";
 import chaiHttp from "chai-http";
 import addContext from "mochawesome/addContext";
 import testEtherscanContracts from "../helpers/etherscanInstanceContracts.json";
-import {
-  initializeSourcifyChains,
-  sourcifyChainsMap,
-} from "../../src/sourcify-chains";
+import { initializeSourcifyChains } from "../../src/sourcify-chains";
 import _storageAddresses from "./sources/storage-contract-chain-addresses.json";
 const storageAddresses: Record<string, string> = _storageAddresses; // add types
 import createXInput from "./sources/createX.input.json";
@@ -62,7 +59,7 @@ chai.use(chaiHttp);
 
 // Chains config is loaded async; use Mocha's --delay + run() to defer test registration
 (async () => {
-  await initializeSourcifyChains();
+  const sourcifyChainsMap = await initializeSourcifyChains();
 
   const chainsToTest = Object.entries(sourcifyChainsMap)
     .filter(([id, chain]) => {
@@ -274,4 +271,7 @@ chai.use(chaiHttp);
   });
 
   run();
-})();
+})().catch((err) => {
+  console.error("Failed to initialize chains for chain tests:", err);
+  process.exit(1);
+});

services/server/test/chains/deployContracts.ts

@@ -1,6 +1,6 @@
 import { deployFromPrivateKey } from "../helpers/helpers";
 import StorageArtifact from "./sources/storage.artifact.json";
-import { sourcifyChainsMap } from "../../src/sourcify-chains";
+import { initializeSourcifyChains } from "../../src/sourcify-chains";
 import { program } from "commander";
 import { JsonRpcProvider } from "ethers";
 import { ChainRepository } from "../../src/sourcify-chain-repository";
@@ -36,6 +36,7 @@ if (require.main === module) {
 }
 
 async function main(chainId: number, privateKey: string) {
+  const sourcifyChainsMap = await initializeSourcifyChains();
   const chainRepository = new ChainRepository(sourcifyChainsMap);
   const chains = chainRepository.supportedChainsArray;
 

services/server/test/chains/etherscan-instances.spec.ts

@@ -1,7 +1,6 @@
 // Periodical tests of Import from Etherscan for each instance e.g. Arbiscan, Etherscan, Bscscan, etc.
 
 import testContracts from "../helpers/etherscanInstanceContracts.json";
-import { sourcifyChainsMap } from "../../src/sourcify-chains";
 import { hookIntoVerificationWorkerRun } from "../helpers/helpers";
 import chai, { request } from "chai";
 import { ServerFixture } from "../helpers/ServerFixture";
@@ -25,41 +24,77 @@ describe("Test each Etherscan instance", function () {
     sandbox.restore();
   });
 
-  const sourcifyChainsArray = new ChainRepository(sourcifyChainsMap)
-    .sourcifyChainsArray;
-
   const testedChains: number[] = [];
   let chainId: keyof typeof testContracts;
   for (chainId in testContracts) {
-    if (!sourcifyChainsMap[chainId].supported) {
-      throw new Error(
-        `Unsupported chain (${chainId}) found in test configuration`,
-      );
-    }
     if (process.env.TEST_CHAIN && process.env.TEST_CHAIN !== chainId) continue;
     testedChains.push(parseInt(chainId));
 
-    describe(`#${chainId} ${sourcifyChainsMap[chainId].name}`, () => {
-      testContracts[chainId].forEach((contract) => {
+    // describe() and it() titles are registered synchronously, before the
+    // server fixture's before() hook has run, so serverFixture.sourcifyChainsMap
+    // is not yet available here. We start with just the chainId and inject the
+    // human-readable chain name at run time (see before/beforeEach below).
+    describe(`#${chainId}`, function () {
+      // `chainId` is a shared loop variable (`let` declared outside the loop),
+      // so closures that run asynchronously (before/beforeEach/it callbacks)
+      // would all see the last iteration's value. Capture the current value in
+      // a `const` so every describe scope gets its own immutable copy.
+      const id = chainId;
+
+      // chainName is set in before() and read in beforeEach() — both close
+      // over this variable so it stays in sync.
+      let chainName: string;
+
+      before(function () {
+        const chain = serverFixture.sourcifyChainsMap[id];
+
+        if (!chain?.supported) {
+          throw new Error(
+            `Unsupported chain (${id}) found in test configuration`,
+          );
+        }
+
+        chainName = chain.name;
+
+        // Rename the suite so reporters show the human-readable chain name.
+        // Most Mocha reporters (spec, mochawesome, …) read suite.title after
+        // all before() hooks have completed, so the renamed title appears in
+        // the output correctly.
+        this.test!.parent!.title = `#${id} ${chainName}`;
+      });
+
+      // it() titles are also fixed at registration time, so we patch
+      // this.currentTest.title here — same reasoning as the suite rename above.
+      beforeEach(function () {
+        if (this.currentTest) {
+          this.currentTest.title = this.currentTest.title.replace(
+            `for chain ${id}`,
+            `for chain ${chainName} (${id})`,
+          );
+        }
+      });
+
+      testContracts[id].forEach((contract) => {
         const address = contract.address;
         const expectedMatch = toMatchLevel(
           contract.expectedStatus as VerificationStatus,
         );
         const type = contract.type;
-        const chain = chainId;
 
-        it(`Should import a ${type} contract from Etherscan for chain ${sourcifyChainsMap[chain].name} (${chain}) and verify the contract, finding a ${expectedMatch}`, async () => {
+        // "for chain ${id}" is a placeholder that beforeEach() replaces
+        // with the full "for chain ${chainName} (${id})" at run time.
+        it(`Should import a ${type} contract from Etherscan for chain ${id} and verify the contract, finding a ${expectedMatch}`, async () => {
           const { resolveWorkers } = makeWorkersWait();
 
           const verifyRes = await request(serverFixture.server.app)
-            .post(`/v2/verify/etherscan/${chain}/${address}`)
+            .post(`/v2/verify/etherscan/${id}/${address}`)
             .send({});
 
           await assertJobVerification(
             serverFixture,
             verifyRes,
             resolveWorkers,
-            chain,
+            id,
             getAddress(address),
             expectedMatch,
           );
@@ -68,18 +103,21 @@ describe("Test each Etherscan instance", function () {
     });
   }
 
-  describe("Double check that all supported chains are tested", () => {
-    const supportedEtherscanChains = sourcifyChainsArray.filter(
-      (chain) => chain.etherscanApi?.supported && chain.supported,
-    );
-
+  describe("Double check that all supported chains are tested", function () {
     it("should have tested all supported chains", function (done) {
-      const untestedChains = supportedEtherscanChains.filter(
-        (chain) => !testedChains.includes(chain.chainId),
-      );
       if (process.env.TEST_CHAIN) {
         return this.skip();
       }
+
+      const supportedEtherscanChains = new ChainRepository(
+        serverFixture.sourcifyChainsMap,
+      ).sourcifyChainsArray.filter(
+        (chain) => chain.etherscanApi?.supported && chain.supported,
+      );
+
+      const untestedChains = supportedEtherscanChains.filter(
+        (chain) => !testedChains.includes(chain.chainId),
+      );
       chai.assert(
         untestedChains.length == 0,
         `There are untested supported chains!: ${untestedChains

services/server/test/helpers/ServerFixture.ts

@@ -3,10 +3,7 @@ import { resetDatabase } from "../helpers/helpers";
 import type { ServerOptions } from "../../src/server/server";
 import { Server } from "../../src/server/server";
 import config from "config";
-import {
-  initializeSourcifyChains,
-  sourcifyChainsMap,
-} from "../../src/sourcify-chains";
+import { initializeSourcifyChains } from "../../src/sourcify-chains";
 import type { StorageIdentifiers } from "../../src/server/services/storageServices/identifiers";
 import { RWStorageIdentifiers } from "../../src/server/services/storageServices/identifiers";
 import type { Pool } from "pg";
@@ -33,6 +30,8 @@ export class ServerFixture {
   readonly repositoryV1Path: string;
   readonly testS3Path: string = testS3Path;
   readonly testS3Bucket: string = testS3Bucket;
+  // Assigned in the before() hook below; safe to read inside it/beforeEach.
+  sourcifyChainsMap!: SourcifyChainMap;
 
   private _server?: Server;
 
@@ -65,7 +64,7 @@ export class ServerFixture {
     this.repositoryV1Path = config.get<string>("repositoryV1.path");
 
     before(async () => {
-      await initializeSourcifyChains();
+      this.sourcifyChainsMap = await initializeSourcifyChains();
 
       process.env.SOURCIFY_POSTGRES_PORT =
         process.env.DOCKER_HOST_POSTGRES_TEST_PORT || "5431";
@@ -84,7 +83,7 @@ export class ServerFixture {
         port: fixtureOptions_?.port || config.get<number>("server.port"),
         maxFileSize: config.get<number>("server.maxFileSize"),
         corsAllowedOrigins: config.get<string[]>("corsAllowedOrigins"),
-        chains: fixtureOptions_?.chains || sourcifyChainsMap,
+        chains: fixtureOptions_?.chains || this.sourcifyChainsMap,
         solc: new SolcLocal(config.get("solcRepo"), config.get("solJsonRepo")),
         vyper: new VyperLocal(config.get("vyperRepo")),
         fe: new FeLocal(config.get("feRepo")),
@@ -97,7 +96,7 @@ export class ServerFixture {
       this._server = new Server(
         serverOptions,
         {
-          sourcifyChainMap: sourcifyChainsMap,
+          sourcifyChainMap: this.sourcifyChainsMap,
           solcRepoPath: config.get("solcRepo"),
           solJsonRepoPath: config.get("solJsonRepo"),
           vyperRepoPath: config.get("vyperRepo"),