Test refactor: call.js (#328)

* Refactored call.js #307

test/call.js

@@ -1,59 +1,30 @@
-var Web3 = require("web3");
-var assert = require("assert");
-var Ganache = require(process.env.TEST_BUILD
-  ? "../build/ganache.core." + process.env.TEST_BUILD + ".js"
-  : "../index.js");
-var fs = require("fs");
-var path = require("path");
-var solc = require("solc");
-const toBytesHexString = require("./helpers/utils/toBytesHexString");
+const assert = require("assert");
+const bootstrap = require("./helpers/contract/bootstrap");
 
 describe("eth_call", function() {
-  var web3 = new Web3(Ganache.provider({}));
-  var accounts;
-  var estimateGasContractData;
-  var estimateGasContractAbi;
-  var EstimateGasContract;
-  var estimateGasInstance;
-  var source = fs.readFileSync(path.join(__dirname, "contracts", "gas", "EstimateGas.sol"), "utf8");
+  let context;
 
-  before("get accounts", function(done) {
-    web3.eth.getAccounts(function(err, accs) {
-      if (err) {
-        return done(err);
-      }
-      accounts = accs;
-      done();
-    });
-  });
-
-  before("compile source and deploy", function() {
+  before("Setting up web3 and contract", async function() {
     this.timeout(10000);
-    var result = solc.compile({ sources: { "EstimateGas.sol": source } }, 1);
-
-    estimateGasContractData = "0x" + result.contracts["EstimateGas.sol:EstimateGas"].bytecode;
-    estimateGasContractAbi = JSON.parse(result.contracts["EstimateGas.sol:EstimateGas"].interface);
+    const contractRef = {
+      contractFiles: ["EstimateGas"],
+      contractSubdirectory: "gas"
+    };
 
-    EstimateGasContract = new web3.eth.Contract(estimateGasContractAbi);
-    return EstimateGasContract.deploy({ data: estimateGasContractData })
-      .send({ from: accounts[0], gas: 3141592 })
-      .then(function(instance) {
-        // TODO: ugly workaround - not sure why this is necessary.
-        if (!instance._requestManager.provider) {
-          instance._requestManager.setProvider(web3.eth._provider);
-        }
-        estimateGasInstance = instance;
-      });
+    context = await bootstrap(contractRef);
   });
 
-  it("should use the block gas limit if no gas limit is specified", function() {
+  it("should use the block gas limit if no gas limit is specified", async function() {
+    const { accounts, instance } = context;
+
+    const name = "0x54696d"; // Byte code for "Tim"
+    const description = "0x4120677265617420677579"; // Byte code for "A great guy"
+    const value = 5;
+
     // this call uses more than the default transaction gas limit and will
     // therefore fail if the block gas limit isn't used for calls
-    return estimateGasInstance.methods
-      .add(toBytesHexString("Tim"), toBytesHexString("A great guy"), 5)
-      .call({ from: accounts[0] })
-      .then((result) => {
-        assert.strictEqual(result, true);
-      });
+    const status = await instance.methods.add(name, description, value).call({ from: accounts[0] });
+
+    assert.strictEqual(status, true);
   });
 });