Allow override of CREDITCOIN_API_URL via ENV vars

because during runtime-upgrade tests we're using `testnet.config.ts`
when running against a disconnected-node locally, however the connection
URL needs to be ws://127.0.0.1:9944.

integration-tests/README.md

@@ -79,8 +79,8 @@ options replace `test` with `jest`. For example:
 yarn jest src/test/collect-coins.test.ts
 ```
 
-You can use `CREDITCOIN_WS_PORT` and `CREDITCOIN_METRICS_PORT` environment variables
-to adjust the port values when running this test suite against a local node. That's mainly
+You can use `CREDITCOIN_API_URL`, `CREDITCOIN_WS_PORT` and `CREDITCOIN_METRICS_PORT` environment variables
+to adjust the some values when running this test suite against a local node. That's mainly
 useful for executing the loan cycle against a Zombienet chain running locally.
 
 

integration-tests/src/globalSetup.ts

@@ -21,6 +21,10 @@ declare global {
     var CREDITCOIN_CTC_CONTRACT: GluwaCreditVestingToken;
 }
 
+export const creditcoinApiUrl = (defaultUrl: string) => {
+    return process.env.CREDITCOIN_API_URL || defaultUrl;
+};
+
 const setup = async () => {
     process.env.NODE_ENV = 'test';
 
@@ -39,7 +43,7 @@ const setup = async () => {
 
     if ((global as any).CREDITCOIN_API_URL === undefined) {
         const wsPort = process.env.CREDITCOIN_WS_PORT || '9944';
-        (global as any).CREDITCOIN_API_URL = `ws://127.0.0.1:${wsPort}`;
+        (global as any).CREDITCOIN_API_URL = creditcoinApiUrl(`ws://127.0.0.1:${wsPort}`);
     }
 
     if ((global as any).CREDITCOIN_METRICS_BASE === undefined) {

integration-tests/src/testnetSetup.ts

@@ -1,5 +1,5 @@
 import { providers, Keyring, KeyringPair, Wallet } from 'creditcoin-js';
-import { default as globalSetup } from './globalSetup';
+import { default as globalSetup, creditcoinApiUrl } from './globalSetup';
 
 const createSigner = (keyring: Keyring, who: 'lender' | 'borrower' | 'sudo'): KeyringPair => {
     switch (who) {
@@ -38,7 +38,7 @@ const createWallet = (who: 'lender' | 'borrower') => {
 };
 
 const setup = async () => {
-    (global as any).CREDITCOIN_API_URL = 'wss://rpc.testnet.creditcoin.network/ws';
+    (global as any).CREDITCOIN_API_URL = creditcoinApiUrl('wss://rpc.testnet.creditcoin.network/ws');
     (global as any).CREDITCOIN_USES_FAST_RUNTIME = false;
     (global as any).CREDITCOIN_CREATE_SIGNER = createSigner;
     (global as any).CREDITCOIN_CREATE_WALLET = createWallet;