diff --git a/src/sequelize/managers/iofog-provision-key-manager.js b/src/sequelize/managers/iofog-provision-key-manager.js
index cf6da1eee..8a78bcd0a 100644
--- a/src/sequelize/managers/iofog-provision-key-manager.js
+++ b/src/sequelize/managers/iofog-provision-key-manager.js
@@ -11,9 +11,9 @@
  *
  */
 
-const BaseManager = require('../managers/base-manager')
+const BaseManager = require('../managers/base-manager');
 const models = require('./../models');
-const FogProvisionKey = models.FogProvisionKey
+const FogProvisionKey = models.FogProvisionKey;
 
 class FogProvisionKeyManager extends BaseManager {
   getEntity() {
@@ -21,5 +21,5 @@ class FogProvisionKeyManager extends BaseManager {
   }
 }
 
-const instance = new FogProvisionKeyManager()
-module.exports = instance
\ No newline at end of file
+const instance = new FogProvisionKeyManager();
+module.exports = instance;
\ No newline at end of file
diff --git a/src/sequelize/managers/iofog-version-command-manager.js b/src/sequelize/managers/iofog-version-command-manager.js
index 71eed75a4..b628e033f 100644
--- a/src/sequelize/managers/iofog-version-command-manager.js
+++ b/src/sequelize/managers/iofog-version-command-manager.js
@@ -11,9 +11,9 @@
  *
  */
 
-const BaseManager = require('../managers/base-manager')
+const BaseManager = require('../managers/base-manager');
 const models = require('./../models');
-const FogVersionCommand = models.FogVersionCommand
+const FogVersionCommand = models.FogVersionCommand;
 
 class FogVersionCommandManager extends BaseManager {
   getEntity() {
@@ -21,5 +21,5 @@ class FogVersionCommandManager extends BaseManager {
   }
 }
 
-const instance = new FogVersionCommandManager()
-module.exports = instance
\ No newline at end of file
+const instance = new FogVersionCommandManager();
+module.exports = instance;
\ No newline at end of file
diff --git a/src/services/agent-service.js b/src/services/agent-service.js
index 1fdcd258e..01c53fcec 100644
--- a/src/services/agent-service.js
+++ b/src/services/agent-service.js
@@ -36,6 +36,8 @@ const formidable = require('formidable');
 const Sequelize = require('sequelize');
 const Op = Sequelize.Op;
 
+const IncomingForm = formidable.IncomingForm;
+
 const agentProvision = async function (provisionData, transaction) {
 
   await Validator.validate(provisionData, Validator.schemas.agentProvision);
@@ -398,16 +400,16 @@ const putImageSnapshot = async function (req, fog, transaction) {
     throw new Errors.ValidationError(ErrorMessages.INVALID_CONTENT_TYPE);
   }
 
-  const form = new formidable.IncomingForm(opts);
+  const form = new IncomingForm(opts);
   form.uploadDir = path.join(appRoot, '../') + 'data';
   if (!fs.existsSync(form.uploadDir)) {
     fs.mkdirSync(form.uploadDir);
   }
-  await saveSnapShot(req, form,fog, transaction);
+  await _saveSnapShot(req, form, fog, transaction);
   return {};
 };
 
-const saveSnapShot = function (req, form, fog, transaction) {
+const _saveSnapShot = function (req, form, fog, transaction) {
   return new Promise((resolve, reject) => {
     form.parse(req, async function (error, fields, files) {
       const file = files['upstream'];
diff --git a/test/src/services/agent-service.test.js b/test/src/services/agent-service.test.js
index 198d25d56..d13f6e81a 100644
--- a/test/src/services/agent-service.test.js
+++ b/test/src/services/agent-service.test.js
@@ -16,9 +16,15 @@ const TunnelManager = require('../../../src/sequelize/managers/tunnel-manager');
 const StraceManager = require('../../../src/sequelize/managers/strace-manager');
 const ioFogVersionCommandManager = require('../../../src/sequelize/managers/iofog-version-command-manager');
 const ioFogProvisionKeyManager = require('../../../src/sequelize/managers/iofog-provision-key-manager');
-const BaseManager = require('../../../src/sequelize/managers/base-manager');
+const HWInfoManager = require('../../../src/sequelize/managers/hw-info-manager');
+const USBInfoManager = require('../../../src/sequelize/managers/usb-info-manager');
 const Sequelize = require('sequelize');
 const Op = Sequelize.Op;
+const path = require('path');
+const formidable = ('./incoming_form');
+const IncomingForm = formidable.IncomingForm;
+
+global.appRoot = path.resolve(__dirname);
 
 
 describe('Agent Service', () => {
@@ -1046,6 +1052,304 @@ describe('Agent Service', () => {
     });
   });
 
+  describe('.getAgentChangeVersionCommand()', () => {
+    const transaction = {};
+    const error = 'Error!';
+
+    def('uuid', () => 'testUuid');
+
+    def('fog', () => ({
+      uuid: $uuid
+    }));
+
+    def('versionCommandLine', () => 'testVersionCommand');
+    def('versionCommand', () => ({
+      versionCommand: $versionCommandLine
+    }));
+
+    def('provisionKey', () => 'testKey');
+    def('expirationTime', () => 12535352525);
+    def('provision', () => ({
+      provisionKey: $provisionKey,
+      expirationTime: $expirationTime
+    }));
+
+    def('response', () => ({
+      versionCommand: $versionCommandLine,
+      provisionKey: $provisionKey,
+      expirationTime: $expirationTime
+    }));
+
+    def('subject', () => $subject.getAgentChangeVersionCommand($fog, transaction));
+
+    def('findCommandResponse', () => Promise.resolve($versionCommand));
+    def('findProvisionResponse', () => Promise.resolve($provision));
+
+    beforeEach(() => {
+      $sandbox.stub(ioFogVersionCommandManager, 'findOne').returns($findCommandResponse);
+      $sandbox.stub(ioFogProvisionKeyManager, 'findOne').returns($findProvisionResponse);
+    });
+
+    it('calls ioFogVersionCommandManager#findOne() with correct args', async () => {
+      await $subject;
+      expect(ioFogVersionCommandManager.findOne).to.have.been.calledWith({
+        iofogUuid: $uuid
+      }, transaction);
+    });
+
+    context('when ioFogVersionCommandManager#findOne() fails', () => {
+      def('findCommandResponse', () => Promise.reject(error));
+
+      it(`fails with ${error}`, () => {
+        return expect($subject).to.be.rejectedWith(error);
+      })
+    });
+
+    context('when ioFogVersionCommandManager#findOne() succeeds', () => {
+      it('calls ioFogProvisionKeyManager#findOne() with correct args', async () => {
+        await $subject;
+        expect(ioFogProvisionKeyManager.findOne).to.have.been.calledWith({
+          iofogUuid: $uuid
+        }, transaction);
+
+        context('when ioFogProvisionKeyManager#findOne() fails', () => {
+          def('findProvisionResponse', () => Promise.reject(error));
+
+          it(`fails with ${error}`, () => {
+            return expect($subject).to.be.equal(undefined);
+          })
+        });
+
+        context('when ioFogProvisionKeyManager#findOne() succeeds', () => {
+          it(`succeeds`, () => {
+            return expect($subject).to.equal($response);
+          })
+        });
+      });
+    });
+  });
+
+  describe('.updateHalHardwareInfo()', () => {
+    const transaction = {};
+    const error = 'Error!';
+
+    def('uuid', () => 'testUuid');
+
+    def('fog', () => ({
+      uuid: $uuid
+    }));
+
+    def('info', () => 'testInfo');
+    def('hardwareData', () => ({
+      info: $info
+    }));
+
+    def('response', () => ({
+      versionCommand: $versionCommandLine,
+      provisionKey: $provisionKey,
+      expirationTime: $expirationTime
+    }));
+
+    def('subject', () => $subject.updateHalHardwareInfo($hardwareData, $fog, transaction));
+
+    def('validatorResponse', () => Promise.resolve(true));
+    def('hwResponse', () => Promise.resolve());
+
+    beforeEach(() => {
+      $sandbox.stub(Validator, 'validate').returns($validatorResponse);
+      $sandbox.stub(HWInfoManager, 'updateOrCreate').returns($hwResponse);
+    });
+
+    it('calls Validator#validate() with correct args', async () => {
+      await $subject;
+      expect(Validator.validate).to.have.been.calledWith($hardwareData, Validator.schemas.updateHardwareInfo);
+    });
+
+    context('when Validator#validate() fails', () => {
+      def('validatorResponse', () => Promise.reject(error));
+
+      it(`fails with ${error}`, () => {
+        return expect($subject).to.be.rejectedWith(error);
+      })
+    });
+
+    context('when Validator#validate() succeeds', () => {
+      it('calls HWInfoManager#updateOrCreate() with correct args', async () => {
+        await $subject;
+        expect(HWInfoManager.updateOrCreate).to.have.been.calledWith({
+          iofogUuid: $uuid
+        }, $hardwareData, transaction);
+
+        context('when HWInfoManager#updateOrCreate() fails', () => {
+          def('hwResponse', () => Promise.reject(error));
+
+          it(`fails with ${error}`, () => {
+            return expect($subject).to.be.equal(undefined);
+          })
+        });
+
+        context('when HWInfoManager#updateOrCreate() succeeds', () => {
+          it(`succeeds`, () => {
+            return expect($subject).to.equal(undefined);
+          })
+        });
+      });
+    });
+  });
+
+  describe('.updateHalUsbInfo()', () => {
+    const transaction = {};
+    const error = 'Error!';
+
+    def('uuid', () => 'testUuid');
+
+    def('fog', () => ({
+      uuid: $uuid
+    }));
 
+    def('info', () => 'testInfo');
+    def('usbData', () => ({
+      info: $info
+    }));
+
+    def('response', () => ({
+      versionCommand: $versionCommandLine,
+      provisionKey: $provisionKey,
+      expirationTime: $expirationTime
+    }));
+
+    def('subject', () => $subject.updateHalUsbInfo($usbData, $fog, transaction));
+
+    def('validatorResponse', () => Promise.resolve(true));
+    def('usbResponse', () => Promise.resolve());
+
+    beforeEach(() => {
+      $sandbox.stub(Validator, 'validate').returns($validatorResponse);
+      $sandbox.stub(USBInfoManager, 'updateOrCreate').returns($usbResponse);
+    });
+
+    it('calls Validator#validate() with correct args', async () => {
+      await $subject;
+      expect(Validator.validate).to.have.been.calledWith($usbData, Validator.schemas.updateUsbInfo);
+    });
+
+    context('when Validator#validate() fails', () => {
+      def('validatorResponse', () => Promise.reject(error));
+
+      it(`fails with ${error}`, () => {
+        return expect($subject).to.be.rejectedWith(error);
+      })
+    });
+
+    context('when Validator#validate() succeeds', () => {
+      it('calls USBInfoManager#updateOrCreate() with correct args', async () => {
+        await $subject;
+        expect(USBInfoManager.updateOrCreate).to.have.been.calledWith({
+          iofogUuid: $uuid
+        }, $usbData, transaction);
+
+        context('when USBInfoManager#updateOrCreate() fails', () => {
+          def('usbResponse', () => Promise.reject(error));
+
+          it(`fails with ${error}`, () => {
+            return expect($subject).to.be.equal(undefined);
+          })
+        });
+
+        context('when USBInfoManager#updateOrCreate() succeeds', () => {
+          it(`succeeds`, () => {
+            return expect($subject).to.equal(undefined);
+          })
+        });
+      });
+    });
+  });
+
+  describe('.deleteNode()', () => {
+    const transaction = {};
+    const error = 'Error!';
+
+    def('uuid', () => 'testUuid');
+
+    def('fog', () => ({
+      uuid: $uuid
+    }));
+
+    def('subject', () => $subject.deleteNode($fog, transaction));
+
+    def('deleteResponse', () => Promise.resolve($getStracesData));
+
+    beforeEach(() => {
+      $sandbox.stub(ioFogManager, 'delete').returns($deleteResponse);
+    });
+
+    it('calls ioFogManager#delete() with correct args', async () => {
+      await $subject;
+      expect(ioFogManager.delete).to.have.been.calledWith({
+        uuid: $uuid
+      }, transaction);
+    });
+
+    context('when ioFogManager#delete() fails', () => {
+      def('deleteResponse', () => Promise.reject(error));
+
+      it(`fails with ${error}`, () => {
+        return expect($subject).to.be.rejectedWith(error);
+      })
+    });
+
+    context('when ioFogManager#delete() succeeds', () => {
+      it(`succeeds`, () => {
+        return expect($subject).to.eventually.equal(undefined);
+      })
+    });
+  });
+
+  describe('.getImageSnapshot()', () => {
+    const transaction = {};
+    const error = 'Error!';
+
+    def('uuid', () => 'testUuid');
+
+    def('fog', () => ({
+      uuid: $uuid
+    }));
+
+    def('microserviceUuid', () => 'testMicroserviceUuid');
+
+    def('microserviceResponse', () => ({
+      uuid: $microserviceUuid
+    }));
+
+    def('subject', () => $subject.getImageSnapshot($fog, transaction));
+
+    def('findResponse', () => Promise.resolve($microserviceResponse));
+
+    beforeEach(() => {
+      $sandbox.stub(MicroserviceManager, 'findOne').returns($findResponse);
+    });
+
+    it('calls MicroserviceManager#delete() with correct args', async () => {
+      await $subject;
+      expect(MicroserviceManager.findOne).to.have.been.calledWith({
+        iofogUuid: $uuid,
+        imageSnapshot: 'get_image'
+      }, transaction);
+    });
+
+    context('when MicroserviceManager#delete() fails', () => {
+      def('findResponse', () => Promise.reject(error));
+
+      it(`fails with ${error}`, () => {
+        return expect($subject).to.be.rejectedWith(error);
+      })
+    });
+
+    context('when MicroserviceManager#delete() succeeds', () => {
+      it(`succeeds`, () => {
+        return expect($subject).to.eventually.have.property('uuid');
+      })
+    });
+  });
 
 });
\ No newline at end of file