integration test: initial commit

test/contract/hardhat.config.js

@@ -0,0 +1,28 @@
+require("@nomiclabs/hardhat-waffle");
+
+// This is a sample Hardhat task. To learn how to create your own go to
+// https://hardhat.org/guides/create-task.html
+task("accounts", "Prints the list of accounts", async () => {
+  const accounts = await ethers.getSigners();
+
+  for (const account of accounts) {
+    console.log(account.address);
+  }
+});
+
+// You need to export an object to set up your config
+// Go to https://hardhat.org/config/ to learn more
+
+/**
+ * @type import('hardhat/config').HardhatUserConfig
+ */
+module.exports = {
+  solidity: "0.7.3",
+  networks: {
+    local: {
+      url: 'http://127.0.0.1:8545',
+      chainId: 4
+    }
+  }
+};
+