Add Solidity runner

.eslintignore

@@ -1 +1,2 @@
 frameworks/java
+frameworks/solidity/truffle

.travis.yml

@@ -42,6 +42,7 @@ env:
     - TEST_IMG=elixir
     - TEST_IMG=powershell
     - TEST_IMG=gradle
+    - TEST_IMG=solidity
 
 script:
   - eslint '**/*.js'

Makefile

@@ -1,6 +1,6 @@
 HOSTNAME=codewars
 
-CONTAINERS=node dotnet jvm java python ruby alt rust julia systems dart crystal ocaml swift haskell objc go lua esolangs chapel nim r erlang elixir powershell gradle
+CONTAINERS=node dotnet jvm java python ruby alt rust julia systems dart crystal ocaml swift haskell objc go lua esolangs chapel nim r erlang elixir powershell gradle solidity
 
 ALL_CONTAINERS=${CONTAINERS} base
 

docker/solidity.docker

@@ -0,0 +1,47 @@
+FROM node:8.4.0-alpine
+RUN apk add --no-cache bash git coreutils findutils
+
+RUN adduser -D codewarrior
+RUN ln -s /home/codewarrior /workspace
+
+# ethereumjs-testrpc >= 3.0.2, requires Node >= 6.9.1
+ENV NPM_CONFIG_LOGLEVEL=warn \
+    NODE_PATH=/usr/local/lib/node_modules
+RUN npm -g install \
+      truffle@3.4.8 \
+      ethereumjs-testrpc@4.0.1 \
+      \
+      # for testing solidity-runner
+      mocha@3.5.0 \
+      chai@4.1.1 \
+ && rm -rf /tmp/npm-*
+
+WORKDIR /runner
+COPY package.json package.json
+RUN npm install --production && rm -rf /tmp/npm-*
+
+COPY frameworks/solidity/truffle /workspace/solidity
+RUN chown -R codewarrior:codewarrior /workspace/solidity
+COPY frameworks/javascript/mocha-reporter.js /runner/frameworks/solidity/
+
+COPY *.js ./
+COPY lib/*.js lib/
+COPY lib/*.sh lib/
+COPY lib/utils lib/utils
+COPY lib/runners/solidity.js lib/runners/
+COPY test/runner.js test/
+COPY test/runners/solidity_spec.js test/runners/
+
+USER codewarrior
+ENV USER=codewarrior HOME=/home/codewarrior
+
+RUN cd /workspace/solidity \
+ && npm install \
+ && rm -rf /tmp/npm-* \
+#&& npm test \
+ && rm -f ./contracts/setup.sol ./contracts/solution.sol \
+ && rm -rf /tmp/test-* \
+ && truffle version
+RUN mocha test/runners/solidity_spec.js
+
+ENTRYPOINT ["node"]

documentation/environments/solidity.md

@@ -0,0 +1,11 @@
+## Language
+
+Solidity v0.4.13 (Truffle v3.4.8)
+
+## Test Framework
+
+[Mocha](http://truffleframework.com/docs/getting_started/javascript-tests)
+
+## Packages
+
+- web3

examples/solidity.yml

@@ -0,0 +1 @@
+# TODO

frameworks/solidity/truffle/contracts/Migrations.sol

@@ -0,0 +1,23 @@
+pragma solidity ^0.4.13;
+
+contract Migrations {
+  address public owner;
+  uint public last_completed_migration;
+
+  modifier restricted() {
+    if (msg.sender == owner) _;
+  }
+
+  function Migrations() {
+    owner = msg.sender;
+  }
+
+  function setCompleted(uint completed) restricted {
+    last_completed_migration = completed;
+  }
+
+  function upgrade(address new_address) restricted {
+    Migrations upgraded = Migrations(new_address);
+    upgraded.setCompleted(last_completed_migration);
+  }
+}

frameworks/solidity/truffle/contracts/setup.sol

@@ -0,0 +1,7 @@
+pragma solidity ^0.4.13;
+
+library ConvertLib {
+  function convert(uint amount, uint conversionRate) returns (uint convertedAmount) {
+    return amount * conversionRate;
+  }
+}

frameworks/solidity/truffle/contracts/solution.sol

@@ -0,0 +1,36 @@
+pragma solidity ^0.4.13;
+
+import "./setup.sol";
+
+contract MetaCoin {
+  mapping (address => uint) balances;
+
+  event Transfer(address indexed _from, address indexed _to, uint256 _value);
+
+  uint public endTime; // for time-travel demo
+  function MetaCoin() {
+    balances[tx.origin] = 10000;
+    endTime = now + 1 days;
+  }
+
+  function sendCoin(address receiver, uint amount) returns(bool sufficient) {
+    if (balances[msg.sender] < amount) return false;
+    balances[msg.sender] -= amount;
+    balances[receiver] += amount;
+    Transfer(msg.sender, receiver, amount);
+    return true;
+  }
+
+  function getBalanceInEth(address addr) returns(uint) {
+    return ConvertLib.convert(getBalance(addr), 2);
+  }
+
+  function getBalance(address addr) returns(uint) {
+    return balances[addr];
+  }
+
+  // for time travel demo, only valid for a day
+  function isValid() returns(bool) {
+    return now <= endTime;
+  }
+}

frameworks/solidity/truffle/migrations/1_initial_migration.js

@@ -0,0 +1,5 @@
+var Migrations = artifacts.require("Migrations");
+
+module.exports = function(deployer) {
+  deployer.deploy(Migrations);
+};

frameworks/solidity/truffle/migrations/2_deploy_contracts.js

@@ -0,0 +1,8 @@
+var ConvertLib = artifacts.require("ConvertLib");
+var MetaCoin = artifacts.require("MetaCoin");
+
+module.exports = function(deployer) {
+  deployer.deploy(ConvertLib);
+  deployer.link(ConvertLib, [MetaCoin]);
+  deployer.deploy(MetaCoin);
+};

frameworks/solidity/truffle/package.json

@@ -0,0 +1,13 @@
+{
+  "name": "codewars-truffle",
+  "private": true,
+  "version": "1.0.0",
+  "description": "",
+  "license": "BSD-3-Clause",
+  "scripts": {
+    "test": "bash ./start-testrpc.sh && truffle test"
+  },
+  "dependencies": {
+    "web3": "0.20.x"
+  }
+}

frameworks/solidity/truffle/start-testrpc.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+if nc -z 127.0.0.1 8545; then # TestRPC already running
+  pkill -f "node /usr/local/bin/testrpc"
+fi
+testrpc &

frameworks/solidity/truffle/test/fixture.js

@@ -0,0 +1,75 @@
+// Example tests produced by `truffle init`, changed to use async/await and added time-travel demo
+const MetaCoin = artifacts.require("MetaCoin");
+
+const Web3 = require('web3');
+const web3 = new Web3();
+web3.setProvider(new Web3.providers.HttpProvider("http://localhost:8545"));
+
+contract('MetaCoin', function(accounts) {
+  it("should put 10000 MetaCoin in the first account", async function() {
+    const m = await MetaCoin.deployed();
+    const balance = await m.getBalance.call(accounts[0]);
+    assert.equal(balance.valueOf(), 10000, "10000 wasn't in the first account");
+  });
+
+  it("should call a function that depends on a linked library", async function() {
+    const m = await MetaCoin.deployed();
+    const coinBalance = await m.getBalance.call(accounts[0]);
+    const coinEthBalance = await m.getBalanceInEth.call(accounts[0]);
+    assert.equal(coinEthBalance.toNumber(), 2*coinBalance.toNumber(), "Library function returned unexpected function, linkage may be broken");
+  });
+
+  it("should send coin correctly", async function() {
+    const amount = 10;
+    const m = await MetaCoin.deployed();
+    // Get initial balances of first and second account.
+    const account1 = accounts[0], account2 = accounts[1];
+    const account1Start = (await m.getBalance.call(account1)).toNumber();
+    const account2Start = (await m.getBalance.call(account2)).toNumber();
+
+    await m.sendCoin(account2, amount, {from: account1});
+
+    const account1End = (await m.getBalance.call(account1)).toNumber();
+    const account2End = (await m.getBalance.call(account2)).toNumber();
+
+    assert.equal(account1End, account1Start - amount, "Amount wasn't correctly taken from the sender");
+    assert.equal(account2End, account2Start + amount, "Amount wasn't correctly sent to the receiver");
+  });
+
+  it("should be valid if the time is within a day from creation", async function() {
+    const m = await MetaCoin.new();
+    await increaseTime(10); // 10 seconds
+    assert.equal(await m.isValid.call(), true, "status wasn't valid after 10 seconds");
+  });
+
+  it("should be invalid after a day", async function() {
+    const m = await MetaCoin.new();
+    await increaseTime(2 * 86400); // 2 days later
+    assert.equal(await m.isValid.call(), false, "status was valid even after a day");
+  });
+});
+
+function increaseTime(seconds) {
+  return new Promise((resolve, reject) => {
+    web3.currentProvider.sendAsync({
+      jsonrpc: "2.0",
+      method: "evm_increaseTime",
+      params: [seconds],
+      id: new Date().getTime()
+    }, (err, result) => {
+      if (err) return reject(err);
+      // resolve(result);
+      // HACK workarounds https://github.com/ethereumjs/testrpc/issues/336
+      mineBlock().then(_ => resolve(result)).catch(reject);
+    });
+  });
+}
+
+function mineBlock() {
+  return new Promise((resolve, reject) => {
+    web3.currentProvider.sendAsync({
+      jsonrpc: "2.0",
+      method: "evm_mine"
+    }, (err, result) => err ? reject(err) : resolve(result));
+  });
+}

frameworks/solidity/truffle/truffle.js

@@ -0,0 +1,12 @@
+module.exports = {
+  networks: {
+    development: {
+      host: "localhost",
+      port: 8545,
+      network_id: "*" // Match any network id
+    }
+  },
+  mocha: {
+    reporter: '/runner/frameworks/solidity/mocha-reporter.js',
+  },
+};

lib/config.js

@@ -19,6 +19,7 @@ module.exports = {
     kotlin: 23000,
     groovy: 23000,
     scala: 27000,
+    solidity: 20000,
   },
   moduleRegExs: {
     haskell: /module\s+([A-Z]([a-z|A-Z|0-9]|\.[A-Z])*)\W/,