test: bump devnet, hotfix devnet create block (#1219)

Author: tabaktoni

.github/workflows/_test.yml

@@ -21,7 +21,7 @@ jobs:
     # TODO - periodically check if conditional services are supported; https://github.com/actions/runner/issues/822
     services:
       devnet:
-        image: ${{ (inputs.use-devnet) && 'shardlabs/starknet-devnet-rs:0.1.2-seed0' || '' }}
+        image: ${{ (inputs.use-devnet) && 'shardlabs/starknet-devnet-rs:0.2.0-rc.2' || '' }}
         ports:
           - 5050:5050
 

__tests__/config/fixtures.ts

@@ -118,12 +118,21 @@ export const getTestAccount = (provider: ProviderInterface) => {
 
 export const createBlockForDevnet = async (): Promise<void> => {
   if (!(process.env.IS_DEVNET === 'true')) return;
-  await fetch(new URL('/create_block', process.env.TEST_RPC_URL), { method: 'POST' });
+  const response = await fetch(new URL('/create_block', process.env.TEST_RPC_URL), {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+    body: '{}',
+  });
+
+  if (!response.ok) {
+    const errorText = await response.text();
+    throw new Error(`DEVNET status ${response.status}: ${errorText}`);
+  }
 };
 
 export async function waitNextBlock(provider: RpcProvider, delay: number) {
   const initBlock = await provider.getBlockNumber();
-  createBlockForDevnet();
+  await createBlockForDevnet();
   let isNewBlock: boolean = false;
   while (!isNewBlock) {
     // eslint-disable-next-line no-await-in-loop