test add config and contract and add test

lib/core/config.js

@@ -301,7 +301,7 @@ Config.prototype.loadPluginContractFiles = function() {
   contractsPlugins.forEach(function(plugin) {
     plugin.contractsFiles.forEach(function(file) {
       var filename = file.replace('./','');
-      self.contractsFiles.push(new File({filename: filename, type: File.types.custom, resolver: function(callback) {
+      self.contractsFiles.push(new File({filename: filename, type: File.types.custom, path: filename, resolver: function(callback) {
         callback(plugin.loadPluginFile(file));
       }}));
     });

test_apps/test_app/extensions/embark-service/contracts/pluginSimpleStorage.sol

@@ -0,0 +1,10 @@
+pragma solidity ^0.4.18;
+contract PluginStorage {
+  address public simpleStorageAddress;
+  address simpleStorageAddress2;
+
+  function PluginStorage(address addr) public {
+    simpleStorageAddress = addr;
+  }
+
+}

test_apps/test_app/extensions/embark-service/index.js

@@ -1,12 +1,22 @@
-var Haml = require('haml');
+const Haml = require('haml');
 
-module.exports = function(embark) {
-  embark.registerServiceCheck('PluginService', function(cb) {
+module.exports = function (embark) {
+  embark.registerServiceCheck('PluginService', function (cb) {
     cb({name: "ServiceName", status: "on"});
   });
 
-  embark.registerPipeline((embark.pluginConfig.files || ['**/*.haml']), function(opts) {
-    var source = opts.source;
-    return Haml.render(source);
+  embark.registerPipeline((embark.pluginConfig.files || ['**/*.haml']), function (opts) {
+    return Haml.render(opts.source);
   });
+
+  embark.registerContractConfiguration({
+    "default": {
+      "contracts": {
+        "PluginStorage": {
+          "args": ["$SimpleStorage"]
+        }
+      }
+    }
+  });
+  embark.addContractFile("./contracts/pluginSimpleStorage.sol");
 };

test_apps/test_app/test/plugin_storage_spec.js

@@ -0,0 +1,26 @@
+/*global contract, before, EmbarkSpec, PluginStorage, SimpleStorage, it*/
+const assert = require('assert');
+
+contract("PluginSimpleStorage", function () {
+  this.timeout(0);
+
+  before((done) => {
+    const contractsConfig = {
+      "SimpleStorage": {
+        args: [100]
+      },
+      "PluginStorage": {
+        args: ["$SimpleStorage"]
+      }
+    };
+    EmbarkSpec.deployAll(contractsConfig, () => {
+      done();
+    });
+  });
+
+  it("set SimpleStorage address", async function () {
+    let result = await PluginStorage.methods.simpleStorageAddress().call();
+    assert.equal(result.toString(), SimpleStorage.options.address);
+  });
+
+});