diff --git a/package.json b/package.json
index c805483..bd177ea 100644
--- a/package.json
+++ b/package.json
@@ -29,6 +29,7 @@
     "async": "^2.6.2",
     "axios": "^0.19.1",
     "chai": "^4.2.0",
+    "chai-spies": "^1.0.0",
     "commander": "^2.19.0",
     "esprima": "^4.0.1",
     "form-data": "^3.0.0",
diff --git a/src/Runner.js b/src/Runner.js
index ad6cef9..34df531 100644
--- a/src/Runner.js
+++ b/src/Runner.js
@@ -116,7 +116,7 @@ class Runner {
     const files = await recursive(path.join(this[type].dir));
     const tests = _.get(this, 'filters.tests', files);
 
-    if (!tests.length) return files;
+    if (!tests.length) return files; //@todo check if needed
 
     return _.filter(files, file => _.includes(tests, file));
     // @todo Make sorts
diff --git a/test/assets/runner/.artilleryrc.js b/test/assets/runner/.artilleryrc.js
new file mode 100644
index 0000000..9fbd4ef
--- /dev/null
+++ b/test/assets/runner/.artilleryrc.js
@@ -0,0 +1,14 @@
+module.exports = {
+  config: {
+    tls: {
+      rejectUnauthorized: false,
+    },
+    http: {
+      timeout: 10,
+    },
+    phases: [{
+      duration: 10,
+      arrivalRate: 1,
+    }],
+  },
+};
diff --git a/test/assets/runner/.mocharc.js b/test/assets/runner/.mocharc.js
new file mode 100644
index 0000000..0e590f5
--- /dev/null
+++ b/test/assets/runner/.mocharc.js
@@ -0,0 +1,30 @@
+module.exports = {
+  reporter: "mochawesome",        // Reporter name.
+  reporterOptions: {              // Reporter settings object.
+    reportDir: 'reports/func/',
+    reportFilename: 'index.js',
+  },
+  color: true,                    // Color TTY output from reporter?
+  // allowUncaught: "boolean",    // Propagate uncaught errors?
+  // asyncOnly: "boolean",        // Force done callback or promise?
+  // bail: "boolean",             // Bail after first test failure?
+  // checkLeaks: "boolean",       // If true, check leaks.
+  // delay: "boolean",            // Delay root suite execution?
+  // enableTimeouts: "boolean",   // Enable timeouts?
+  // fgrep: "string",             // Test filter given string.
+  // forbidOnly: "boolean",       // Tests marked only fail the suite?
+  // forbidPending: "boolean",    // Pending tests fail the suite?
+  // fullStackTrace: "boolean",   // Full stacktrace upon failure?
+  // global: "Array:string",      // Variables expected in global scope.
+  // grep: "RegExp | string",     // Test filter given regular expression.
+  // growl: "boolean",            // Enable desktop notifications?
+  // hideDiff: "boolean",         // Suppress diffs from failures?
+  // ignoreLeaks: "boolean",      // Ignore global leaks?
+  // invert: "boolean",           // Invert test filter matches?
+  // noHighlighting: "boolean",   // Disable syntax highlighting?
+  // retries: "number",           // Number of times to retry failed tests.
+  // slow: "number",              // Slow threshold value.
+  // timeout: "number | string",  // Timeout threshold value.
+  // ui: "string",                // Interface name.
+  // useInlineDiffs: "boolean",   // Use inline diffs?
+};
diff --git a/test/assets/runner/Test.postman_collection.json b/test/assets/runner/Test.postman_collection.json
new file mode 100644
index 0000000..cf7ed24
--- /dev/null
+++ b/test/assets/runner/Test.postman_collection.json
@@ -0,0 +1,34 @@
+{
+	"info": {
+		"_postman_id": "test",
+		"name": "Test",
+		"schema": "https://schema.getpostman.com/json/collection/v2.1.0/collection.json"
+	},
+	"item": [
+		{
+			"name": "Test",
+			"item": [
+				{
+					"name": "Get",
+					"request": {
+						"method": "GET",
+						"header": [],
+						"url": {
+							"raw": "localhost:4000/test",
+							"host": [
+								"localhost"
+							],
+							"port": "4000",
+							"path": [
+								"test"
+							]
+						}
+					},
+					"response": []
+				}
+			],
+			"protocolProfileBehavior": {}
+		}
+	],
+	"protocolProfileBehavior": {}
+}
\ No newline at end of file
diff --git a/test/assets/runner/func/test.js b/test/assets/runner/func/test.js
new file mode 100644
index 0000000..2e0a15f
--- /dev/null
+++ b/test/assets/runner/func/test.js
@@ -0,0 +1,8 @@
+const { describe, it, beforeEach } = require('mocha');
+const { expect } = require('chai');
+
+describe('Test', function () {
+  it('Returns True', function () {
+    expect(true).to.be.true;
+  });
+});
diff --git a/test/assets/runner/load/test.js b/test/assets/runner/load/test.js
new file mode 100644
index 0000000..e69de29
diff --git a/test/driverProvider.spec.js b/test/driverProvider.spec.js
new file mode 100644
index 0000000..1b6d45d
--- /dev/null
+++ b/test/driverProvider.spec.js
@@ -0,0 +1,45 @@
+const { describe, it } = require('mocha');
+const { expect } = require('chai');
+
+const DriverProvider = require('../src/DriverProvider');
+const mochaDriver = require('../src/drivers/func/mocha');
+const artilleryDriver = require('../src/drivers/load/artillery');
+
+describe('Driver Provider', function () {
+  describe('#resolve', function () {
+    it('should resolve path to the required func driver', function () {
+      DriverProvider.setRunType('func');
+      const resolved = DriverProvider.resolve();
+
+      expect(resolved).to.be.equal(mochaDriver);
+    });
+
+    it('should resolve path to the required load driver', function () {
+      DriverProvider.setRunType('load');
+      const resolved = DriverProvider.resolve();
+
+      expect(resolved).to.be.equal(artilleryDriver);
+    });
+  });
+
+  describe('#setRunType', function () {
+    it('should set passed run type', function () {
+      const runType = 'func';
+
+      DriverProvider.setRunType(runType);
+      expect(DriverProvider.runType).to.be.equal(runType);
+    });
+  });
+
+  describe('#setDrivers', function () {
+    it('should set passed drivers', function () {
+      const drivers = {
+        func: 'jest',
+        load: 'gatling'
+      };
+
+      DriverProvider.setDrivers(drivers);
+      expect(DriverProvider.drivers).to.be.equal(drivers);
+    });
+  });
+});
diff --git a/test/runner.spec.js b/test/runner.spec.js
new file mode 100644
index 0000000..fdb6247
--- /dev/null
+++ b/test/runner.spec.js
@@ -0,0 +1,179 @@
+const { describe, it } = require('mocha');
+const { expect } = require('chai');
+
+const path = require('path');
+const Readable = require('stream').Readable;
+const config = require('../config');
+const testCollection = require('./assets/runner/Test.postman_collection');
+
+const Runner = require('../src/Runner');
+
+describe('Runner', function () {
+  describe('constructor', function () {
+    it('should throw an error without configuration argument', function () {
+      const runner = () => ( new Runner() );
+
+      expect(runner).to.throw();
+    });
+
+    it('should create runner with correct dir path', function () {
+      const testsDir = path.resolve(process.cwd(), 'test', 'assets', 'runner');
+      const runner = new Runner({
+        testsDir,
+      });
+      const testsDirFunc = path.resolve(testsDir, 'func');
+      const testsDirLoad = path.resolve(testsDir, 'load');
+
+      expect(runner.func.dir).to.be.equal(testsDirFunc);
+      expect(runner.load.dir).to.be.equal(testsDirLoad);
+    });
+
+    it('should set passed postman collection', function () {
+      new Runner({
+        postmanCollection: testCollection,
+      });
+
+      expect(config.get('postman:collection')).to.deep.equal(testCollection);
+    });
+
+    it('should create readable logstream', function () {
+      const runner = new Runner({});
+
+      expect(runner.logStream).to.be.instanceof(Readable);
+    });
+
+    it('should create runner with correct passed configs', function () {
+      const assetsPath = path.resolve(process.cwd(), 'test', 'assets', 'runner');
+      const configsSettings = {
+        funcCfg: path.join(assetsPath, '.mocharc.js'),
+        loadCfg: path.join(assetsPath, '.artilleryrc.js'),
+      };
+      new Runner(configsSettings);
+
+      expect(config.get('func_cfg')).to.be.equal(configsSettings.funcCfg);
+      expect(config.get('load_cfg')).to.be.equal(configsSettings.loadCfg);
+    });
+
+    it('should create runner with correct default configs', function () {
+      const configPath = path.resolve(process.cwd(), 'config');
+      const configsSettings = {
+        funcCfg: path.join(configPath, '.mocharc.js'),
+        loadCfg: path.join(configPath, '.artilleryrc.js'),
+      };
+
+      new Runner({});
+
+      expect(config.get('func_cfg')).to.be.equal(configsSettings.funcCfg);
+      expect(config.get('load_cfg')).to.be.equal(configsSettings.loadCfg);
+    });
+  });
+
+  describe('#run', function () {
+    it('should fail if no tests are specified', function () {
+      expect(true).to.be.true;
+    });
+
+    it('should run tests with default parameters', async function () {
+      const testsDir = path.resolve(process.cwd(), 'test', 'assets', 'runner');
+      const objKeys = ['start', 'end', 'suites', 'tests', 'passes', 'pending', 'failures', 'duration'];
+      const runner = new Runner({
+        testsDir,
+      });
+
+      const res = await runner.run('func', false, [], {
+        onTestEnd: () => {}
+      });
+
+      expect(res).to.have.all.keys(objKeys);
+      expect(res.suites).to.be.equal(1);
+    });
+
+    it('should run tests with load type', function () {
+      expect(true).to.be.true;
+    });
+
+    it('should run tests with passed files', async function () {
+      const runner = new Runner({});
+      const filePath = path.join(path.resolve(process.cwd(), 'test', 'assets', 'runner', 'func'), 'test.js');
+
+      const res = await runner.run('func', false, [filePath], {
+        onTestEnd: () => {},
+      });
+
+      expect(res.suites).to.equal(1);
+      expect(res.tests).to.equal(1);
+      expect(res.passes).to.equal(1);
+      expect(res.failures).to.equal(0);
+    });
+
+    it('should call onTestEnd function each time a test runs', async function () {
+      const testsDir = path.resolve(process.cwd(), 'test', 'assets', 'runner');
+      const runner = new Runner({
+        testsDir,
+      });
+      let counter = 0;
+
+      await runner.run('func', false, [], {
+        onTestEnd: () => counter++,
+      });
+
+      expect(counter).to.be.equal(1);
+    });
+  });
+
+  describe('#getCurrentType', function () {
+    it('should return current type', function () {
+      const runner = new Runner({});
+
+      expect(runner.getCurrentType()).to.be.equal(runner.type);
+    });
+  });
+
+  describe('#setFilters', function () {
+    it('should set passed filters', function () {
+      const filters = {
+        tests: {
+          func: 'mocha',
+          load: 'artillery'
+        }
+      };
+      const runner = new Runner({});
+
+      runner.setFilters(filters);
+
+      expect(runner.filters).to.be.equal(filters);
+    });
+  });
+
+  describe('#getStatus', function () {
+    it('should return status if tests run successfully', async function () {
+      const testsDir = path.resolve(process.cwd(), 'test', 'assets', 'runner');
+      const runner = new Runner({
+        testsDir,
+      });
+
+      await runner.run('func', false, [], {
+        onTestEnd: () => {},
+      });
+
+      expect(runner.getStatus()).to.be.equal('inPending');
+    });
+  });
+
+  describe('#getFilter', function () {
+    it('should return files according to type', async function () {
+      const testsDir = path.resolve(process.cwd(), 'test', 'assets', 'runner');
+      const runner = new Runner({
+        testsDir,
+      });
+
+      expect( await runner.getFilter('func') ).to.deep.equal({
+        [path.join(testsDir, 'func', 'test.js')]: true,
+      });
+
+      expect( await runner.getFilter('load') ).to.deep.equal({
+        [path.join(testsDir, 'load', 'test.js')]: true,
+      });
+    });
+  });
+});
diff --git a/test/service.spec.js b/test/service.spec.js
new file mode 100644
index 0000000..18e5fcc
--- /dev/null
+++ b/test/service.spec.js
@@ -0,0 +1,57 @@
+const { describe, it } = require('mocha');
+const { expect } = require('chai');
+
+const Service = require('../src/Service');
+const DriverProvider = require('../src/DriverProvider');
+
+describe('Service', function () {
+  describe('constructor', function () {
+    it('should set host from passed options', function () {
+      const host = {
+        develop: 'http://develop',
+        testing: 'http://testing',
+        product: 'http://product'
+      };
+      const service = new Service({
+        host,
+      });
+
+      expect(service.host).to.be.equal(host);
+      expect(service.headers).to.deep.equal({});
+    });
+
+    it('should set headers from passed options', function () {
+      const headers = {
+        develop: 'header1',
+        testing: 'header2',
+        product: 'header3'
+      };
+      const service = new Service({
+        headers,
+      });
+
+      expect(service.headers).to.be.equal(headers);
+    });
+  });
+
+  describe('#send', function () {
+    it('should return methods', function () {
+      DriverProvider.runType = 'func';
+      const service = new Service({
+        host: {
+          develop: 'http://develop',
+          testing: 'http://testing',
+          product: 'http://product'
+        },
+        headers: {
+          develop: 'header1',
+          testing: 'header2',
+          product: 'header3'
+        }
+      });
+
+      const res = service.send({});
+      expect(Object.keys(res)).to.deep.equal(['getTraceLink', 'send']);
+    });
+  });
+});
diff --git a/test/services.spec.js b/test/services.spec.js
new file mode 100644
index 0000000..1e9de03
--- /dev/null
+++ b/test/services.spec.js
@@ -0,0 +1,36 @@
+const { describe, it } = require('mocha');
+const chai = require('chai'), spies = require('chai-spies');
+chai.use(spies);
+const expect = chai.expect;
+const path = require('path');
+const requireDir = require('require-dir');
+
+const Services = require('../src/Services');
+
+describe('Services', function () {
+  describe('#init', function () {
+    it('should require directory', function () {
+      const servicePath = path.join(process.cwd(), 'test', 'assets', 'services');
+      const services = new Services();
+      const spyFunc = chai.spy(requireDir);
+
+      chai.spy.on(services, 'init', spyFunc);
+      services.init(servicePath);
+
+      expect(spyFunc).to.have.been.called.with.exactly(servicePath);
+    });
+  });
+
+  describe('#register', function () {
+    it('should set new service instance', function () {
+      const services = new Services();
+      services.register('Jaeger', {
+        host: {
+          debug: 'http://localhost:16686'
+        },
+      });
+
+      expect(services.Jaeger.host.debug).to.be.equal('http://localhost:16686');
+    });
+  });
+});