dexorder

lib_openzeppelin_contracts/test/helpers/txpool.js

@@ -0,0 +1,29 @@
+const { network } = require('hardhat');
+const { expect } = require('chai');
+const { mine } = require('@nomicfoundation/hardhat-network-helpers');
+
+const { unique } = require('./iterate');
+
+async function batchInBlock(txs) {
+  try {
+    // disable auto-mining
+    await network.provider.send('evm_setAutomine', [false]);
+    // send all transactions
+    const responses = await Promise.all(txs.map(fn => fn()));
+    // mine one block
+    await mine();
+    // fetch receipts
+    const receipts = await Promise.all(responses.map(response => response.wait()));
+    // Sanity check, all tx should be in the same block
+    expect(unique(receipts.map(receipt => receipt.blockNumber))).to.have.lengthOf(1);
+    // return responses
+    return receipts;
+  } finally {
+    // enable auto-mining
+    await network.provider.send('evm_setAutomine', [true]);
+  }
+}
+
+module.exports = {
+  batchInBlock,
+};