integration test: initial commit

test/contract/.gitignore

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+node_modules
+
+#Hardhat files
+cache
+artifacts

test/contract/contracts/Greeter.sol

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+//SPDX-License-Identifier: Unlicense
+pragma solidity ^0.7.0;
+
+contract Greeter {
+  string greeting;
+
+  event Greet(string value);
+
+  constructor(string memory _greeting) {
+    greeting = _greeting;
+  }
+
+  function greet() public view returns (string memory) {
+    return greeting;
+  }
+
+  function setGreeting(string memory _greeting) public {
+    greeting = _greeting;
+    emit Greet(greeting);
+  }
+}

test/contract/hardhat.config.js

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+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
+    }
+  }
+};
+