contracts: added tests for multiple delegations

contracts/contracts/tests/SubcallTests.sol

@@ -79,6 +79,15 @@ contract SubcallTests {
         Subcall.consensusDelegate(to, value);
     }
 
+    function testConsensusDelegateMulti(StakingAddress[] memory to, uint128 value)
+        external
+        payable
+    {
+        for( uint i = 0; i < to.length; i++ ) {
+            Subcall.consensusDelegate(to[i], uint128(value / to.length));
+        }
+    }
+
     event Result(bytes data);
 
     function testConsensusDelegateWithReceipt(

contracts/test/subcall.ts

@@ -125,6 +125,30 @@ describe('Subcall', () => {
     };
   });
 
+  /// Verifies that delegation to multiple validators at a time works (when no receipt is requested)
+  it('consensus.Delegate (multiple, without receipt)', async () => {
+    // Ensure contract has an initial balance.
+    const initialBalance = parseEther('1000');
+    await ensureBalance(contract, initialBalance, owner);
+
+    let randomPubkeys : Uint8Array[] = [];
+    for( let i = 0; i < 10; i++ ) {
+      const rawKp = await contract.generateRandomAddress();
+      randomPubkeys.push(getBytes(rawKp.publicKey));
+    }
+
+    const tx = await contract.testConsensusDelegateMulti(
+      randomPubkeys,
+      parseEther('1000'),
+    );
+    const receipt = await tx.wait();
+    console.log('Receipt is', receipt);
+
+    expect(await ethers.provider.getBalance(await contract.getAddress())).eq(
+      parseEther('0'),
+    );
+  });
+
   it('Derive Staking Addresses', async () => {
     const newKeypair = await contract.generateRandomAddress();