feat(web3.js): add support for get stake minimum delegation

solana-labs · Jul 20, 2022 · 8602516 · 8602516
1 parent 0402c3d
commit 8602516
Show file tree

Hide file tree

Showing 3 changed files with 28 additions and 2 deletions.
diff --git a/web3.js/src/connection.ts b/web3.js/src/connection.ts
@@ -4278,6 +4278,27 @@ export class Connection {
     }
   }
 
+  /**
+   * get the stake minimum delegation
+   */
+  async getStakeMinimumDelegation(): Promise<RpcResponseAndContext<number>> {
+    const config: any = {
+      encoding: 'base64',
+      commitment: this.commitment,
+    };
+    const unsafeRes = await this._rpcRequest('getStakeMinimumDelegation', [
+      config,
+    ]);
+    const res = create(unsafeRes, jsonRpcResultAndContext(number()));
+    if ('error' in res) {
+      throw new SolanaJSONRPCError(
+        res.error,
+        `failed to get stake minimum delegation`,
+      );
+    }
+    return res.result;
+  }
+
   /**
    * Simulate a transaction
    */

diff --git a/web3.js/test/connection.test.ts b/web3.js/test/connection.test.ts
@@ -3804,6 +3804,10 @@ describe('Connection', function () {
   }
 
   if (process.env.TEST_LIVE) {
+    it('getStakeMinimumDelegation', async () => {
+      const {value} = await connection.getStakeMinimumDelegation();
+      expect(value).to.eql(1000000000);
+    });
     it('simulate transaction with message', async () => {
       connection._commitment = 'confirmed';
 

diff --git a/web3.js/test/stake-program.test.ts b/web3.js/test/stake-program.test.ts
@@ -387,8 +387,9 @@ describe('StakeProgram', () => {
       const STAKE_ACCOUNT_MIN_BALANCE =
         await connection.getMinimumBalanceForRentExemption(StakeProgram.space);
 
-      // todo: use `Connection.getMinimumStakeDelegation` when implemented
-      const MIN_STAKE_DELEGATION = LAMPORTS_PER_SOL;
+      const MIN_STAKE_DELEGATION = (
+        await connection.getStakeMinimumDelegation()
+      ).value;
 
       const voteAccounts = await connection.getVoteAccounts();
       const voteAccount = voteAccounts.current.concat(