add prettier

test in typescript

add GPL license

pin solc version

add CI

.circleci/config.yml

@@ -0,0 +1,25 @@
+version: 2
+jobs:
+  build:
+    docker:
+      - image: circleci/node:10
+    steps:
+      - checkout
+
+      - restore_cache:
+          keys:
+            - v1-dependencies-{{ checksum "package.json" }}
+            - v1-dependencies-
+
+      - run: yarn
+
+      - save_cache:
+          key: v1-dependencies-{{ checksum "package.json" }}
+          paths:
+            - node_modules
+
+      - run: yarn prettier:check
+
+      - run: yarn compile
+
+      - run: yarn test

.gitattributes

@@ -1 +1 @@
-*.sol linguist-language=Solidity
+*.sol linguist-language=Solidity

.gitignore

@@ -1,2 +1 @@
-node_modules/
-build/
+build/

.mocharc.json

@@ -0,0 +1,5 @@
+{
+  "extension": ["ts"],
+  "spec": "./test/**/*.ts",
+  "require": "ts-node/register"
+}

.prettierrc

@@ -0,0 +1,5 @@
+{
+  "semi": false,
+  "singleQuote": true,
+  "printWidth": 120
+}

README.md

@@ -1,17 +1,21 @@
-## Installation:
+# Uniswap v2 Smart Contracts
+
+## Development
+
+### Clone
 
-1) Clone Uniswap
 ```
-$ git clone https://github.com/Uniswap/uniswap-v2
-$ cd uniswap-v2
+git clone https://github.com/Uniswap/uniswap-v2.git
+cd uniswap-v2
 ```
 
-2) Install dependencies
+### Install Dependencies
 ```
 yarn
 ```
 
-3) Run tests
+### Compile Contracts and Run Tests
 ```
+yarn compile
 yarn test
 ```

package.json

@@ -1,13 +1,25 @@
 {
+  "engines": {
+    "node": "^10"
+  },
   "dependencies": {
-    "solc": "^0.5.11"
+    "solc": "0.5.12"
   },
   "devDependencies": {
+    "@types/chai": "^4.2.3",
+    "@types/mocha": "^5.2.7",
     "chai": "^4.2.0",
     "ethereum-waffle": "^2.1.0",
-    "mocha": "^6.2.0"
+    "mocha": "^6.2.2",
+    "prettier": "^1.18.2",
+    "ts-node": "^8.4.1",
+    "typescript": "^3.6.4"
   },
   "scripts": {
-    "test": "waffle && mocha"
-  }
+    "prettier:check": "yarn prettier ./test/*.ts --check",
+    "prettier:write": "yarn prettier ./test/*.ts --write",
+    "compile": "rm -rf ./build/ && waffle waffle.json",
+    "test": "mocha"
+  },
+  "license": "GPL-3.0-or-later"
 }

test/testToken.ts

@@ -0,0 +1,46 @@
+import chai from 'chai'
+import { createMockProvider, deployContract, getWallets, solidity } from 'ethereum-waffle'
+import { Contract } from 'ethers'
+
+import TestTokenMock from '../build/TestERC20.json'
+
+chai.use(solidity)
+const { expect } = chai
+
+describe('INTEGRATION: Example', () => {
+  const provider = createMockProvider()
+  const [wallet, walletTo] = getWallets(provider)
+  let token: Contract
+
+  beforeEach(async () => {
+    token = await deployContract(wallet, TestTokenMock, ['HayCoin', 'HAY', 18, 1000])
+  })
+
+  it('Is named HayCoin', async () => {
+    expect(await token.name()).to.eq('HayCoin')
+  })
+
+  it('Assigns initial balance', async () => {
+    expect(await token.balanceOf(wallet.address)).to.eq(1000)
+  })
+
+  it('Transfer adds amount to destination account', async () => {
+    await token.transfer(walletTo.address, 7)
+    expect(await token.balanceOf(walletTo.address)).to.eq(7)
+  })
+
+  it('Transfer emits event', async () => {
+    await expect(token.transfer(walletTo.address, 7))
+      .to.emit(token, 'Transfer')
+      .withArgs(wallet.address, walletTo.address, 7)
+  })
+
+  it('Can not transfer above the amount', async () => {
+    await expect(token.transfer(walletTo.address, 1007)).to.be.reverted
+  })
+
+  it('Can not transfer from empty account', async () => {
+    const tokenFromOtherWallet = token.connect(walletTo)
+    await expect(tokenFromOtherWallet.transfer(wallet.address, 1)).to.be.reverted
+  })
+})

tsconfig.json

@@ -0,0 +1,9 @@
+{
+  "compilerOptions": {
+    "target": "es5",
+    "module": "commonjs",
+    "strict": true,
+    "esModuleInterop": true,
+    "resolveJsonModule": true
+  }
+}

waffle.json

@@ -0,0 +1,3 @@
+{
+  "solcVersion": "./node_modules/solc"
+}