diff --git a/.travis.yml b/.travis.yml
index 3411523..7d0eb09 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,16 +5,16 @@ addons:
 
 sudo: false
 
-php: [7.1, 7.2, 7.3]
+php: [7.1, 7.2, 7.3, 7.4]
 
 matrix:
     allow_failures:
         -   env: DEPENDENCIES='dev'
-        -   php: 7.3
+        -   php: 7.4
     fast_finish: true
     include:
         # Test against dev versions of dependencies
-        -   php: 7.3
+        -   php: 7.4
             env: DEPENDENCIES='dev'
 cache:
     directories:
@@ -27,5 +27,9 @@ install:
     - composer install --no-progress
 
 script:
-    - vendor/bin/phpspec run -f pretty
-    - vendor/bin/behat -fprogress --strict
+    - vendor/bin/phpunit -v --coverage-clover=coverage.clover
+    - vendor/bin/behat
+
+after_script:
+    - wget https://scrutinizer-ci.com/ocular.phar
+    - php ocular.phar code-coverage:upload --format=php-clover coverage.clover
diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..09f1c99
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,39 @@
+1.0.1 / 2020-
+==================
+
+Features: 
+* Enabled configuration per driver instance; usage examples with all sessions using mink-panther-driver:
+```YAML
+# in behat.yml
+    extensions:
+        Robertfausk\Behat\PantherExtension: ~ # no configuration here
+        Behat\MinkExtension:
+           javascript_session: javascript_chrome
+           sessions:
+               default:
+                   panther: ~
+               javascript:
+                   panther:
+                       options: ~
+               javascript_chrome:
+                   panther:
+                       options:
+                           browser: 'chrome'
+                           webServerDir: '%paths.base%/public'
+               javascript_firefox:
+                   panther:
+                       options:
+                           browser: 'firefox'
+```
+
+Testsuite:
+
+* Enabled travis at all with phpunit and behat for PHP 7.1-7.4 
+* Added PHP 7.4 in the CI
+* Added Unit Tests
+* Added one simple scenario test with behat
+
+1.0.0 / 2019-08-16
+==================
+
+Initial Release :tada: 
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..b40000f
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,39 @@
+ARG PHP_VERSION=7.2
+
+FROM composer:latest as composer
+FROM php:${PHP_VERSION}-cli
+
+# replace shell with bash so we can source files
+RUN rm /bin/sh && ln -s /bin/bash /bin/sh
+
+RUN apt-get update && apt-get install -y \
+    git-core
+
+
+COPY --from=composer /usr/bin/composer /usr/bin/composer
+
+# https://getcomposer.org/doc/03-cli.md#composer-allow-superuser
+ENV COMPOSER_ALLOW_SUPERUSER 1
+ENV COMPOSER_HOME /home/docker/.composer
+# contains dev-mode packages
+RUN composer global require "hirak/prestissimo:^0.3" "sllh/composer-versions-check:^2.0" "pyrech/composer-changelogs:^1.7" --prefer-dist --no-progress --no-suggest --classmap-authoritative
+
+##############################################################
+# add symfony/panther
+##############################################################
+RUN apt-get update && apt-get install -y libzip-dev zlib1g-dev unzip chromium && docker-php-ext-install zip
+ENV PANTHER_NO_SANDBOX 1
+
+##############################################################
+# add gd
+##############################################################
+
+RUN apt-get update && apt-get install -y \
+    libjpeg-dev \
+    libpng-dev
+
+RUN docker-php-ext-configure gd --with-jpeg-dir=/usr/include/ && \
+    docker-php-ext-install gd
+
+WORKDIR /var/www/html
+COPY . /var/www/html
diff --git a/README.md b/README.md
index a16cfe1..bf755fa 100644
--- a/README.md
+++ b/README.md
@@ -23,8 +23,53 @@ Symfony Panther extension for Behat
 composer require --dev robertfausk/behat-panther-extension
 ```
 
+## Usage example
+
+* Add ```Robertfausk\Behat\PantherExtension: ~``` to your behat.yml.
+* Use ```panther``` session in ```Behat\MinkExtension```. 
+* The extension will use options of ```symfony/panther``` by default.
+Have a look at ```PantherTestCaseTrait::$defaultOptions``` for this.
+* Following are some examples with all sessions using mink-panther-driver:
+    ```YAML
+    # in behat.yml
+        extensions:
+            Robertfausk\Behat\PantherExtension: ~ # no configuration here
+            Behat\MinkExtension:
+               javascript_session: javascript_chrome
+               sessions:
+                   default:
+                       panther: ~
+                   javascript:
+                       panther:
+                           options: ~
+                   javascript_chrome:
+                       panther:
+                           options:
+                               browser: 'chrome'
+                               webServerDir: '%paths.base%/public' # your custom public dir
+                   javascript_firefox:
+                       panther:
+                           options:
+                               browser: 'firefox'
+    ```
+
+### How to upgrade?
+
+ Have a look at [CHANGELOG](CHANGELOG.md) for detailed information.
+
+## How to contribute?
+
+Start docker-compose with php version of your choice. Currently there are php7.2, php7.3 and php7.4.
+
+    docker-compose up php7.2
+
+Run phpunit tests
+
+    docker-compose run php7.2 vendor/bin/phpunit
+
 ## Credits
 
 Created by Robert Freigang [robertfausk](https://github.com/robertfausk).
 
-MinkPantherDriver is built on top of [Panther](https://github.com/symfony/panther) and for usage with [Behat and Mink](http://behat.org/en/latest/cookbooks/integrating_symfony2_with_behat.html#initialising-behat). 
+BehatPantherExtension is built on top of [symfony/panther](https://github.com/symfony/panther) and [robertfausk/mink-panther-driver]([Panther](https://github.com/robertfausk/mink-panther-driver)).
+It is for usage with [Behat and Mink](http://behat.org/en/latest/cookbooks/integrating_symfony2_with_behat.html#initialising-behat). 
diff --git a/composer.json b/composer.json
index 90cc59e..478d0ab 100644
--- a/composer.json
+++ b/composer.json
@@ -26,12 +26,19 @@
         "symfony/config": "^3.4|^4.0"
     },
     "require-dev": {
+        "phpunit/phpunit": "~7.5",
+        "matthiasnoback/symfony-config-test": "^4.1"
     },
     "autoload": {
         "psr-0": {
             "Robertfausk\\Behat\\PantherExtension": "src/"
         }
     },
+    "autoload-dev": {
+        "psr-4": {
+            "Tests\\": "tests/"
+        }
+    },
     "extra": {
         "branch-alias": {
             "dev-master": "1.0.x-dev"
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100755
index 0000000..3bba118
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,38 @@
+version: "3"
+services:
+
+  php7.1:
+    tty: true
+    build:
+      context: .
+      args:
+        - PHP_VERSION=7.1
+    volumes:
+      - .:/var/www/html
+
+  php7.2:
+    tty: true
+    build:
+      context: .
+      args:
+        - PHP_VERSION=7.2
+    volumes:
+      - .:/var/www/html
+
+  php7.3:
+    tty: true
+    build:
+      context: .
+      args:
+        - PHP_VERSION=7.3
+    volumes:
+      - .:/var/www/html
+
+  php7.4:
+    tty: true
+    build:
+      context: .
+      args:
+        - PHP_VERSION=7.4
+    volumes:
+      - .:/var/www/html
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
new file mode 100644
index 0000000..3e081bc
--- /dev/null
+++ b/phpunit.xml.dist
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<phpunit colors="true" bootstrap="vendor/autoload.php">
+    <php>
+        <var name="driver_config_factory" value="Behat\Mink\Tests\Driver\PantherConfig::getInstance" />
+    </php>
+
+    <extensions>
+        <extension class="Symfony\Component\Panther\ServerExtension" />
+    </extensions>
+
+    <testsuites>
+        <testsuite name="Driver test suite">
+            <directory>./tests</directory>
+        </testsuite>
+    </testsuites>
+
+    <filter>
+        <whitelist>
+            <directory>./src</directory>
+        </whitelist>
+    </filter>
+</phpunit>
diff --git a/src/Robertfausk/Behat/PantherExtension/ServiceContainer/Driver/PantherFactory.php b/src/Robertfausk/Behat/PantherExtension/ServiceContainer/Driver/PantherFactory.php
index 9d43072..b7355c3 100644
--- a/src/Robertfausk/Behat/PantherExtension/ServiceContainer/Driver/PantherFactory.php
+++ b/src/Robertfausk/Behat/PantherExtension/ServiceContainer/Driver/PantherFactory.php
@@ -4,6 +4,7 @@
 namespace Robertfausk\Behat\PantherExtension\ServiceContainer\Driver;
 
 use Behat\MinkExtension\ServiceContainer\Driver\DriverFactory;
+use Robertfausk\Behat\PantherExtension\ServiceContainer\PantherConfiguration;
 use Symfony\Component\Config\Definition\Builder\ArrayNodeDefinition;
 use Symfony\Component\DependencyInjection\Definition;
 
@@ -33,17 +34,8 @@ public function supportsJavascript()
      */
     public function configure(ArrayNodeDefinition $builder)
     {
-        $builder
-            ->children()
-                ->arrayNode('options')
-                    ->useAttributeAsKey('key')
-                    ->prototype('variable')->end()
-                    ->info(
-                        "These are the options passed as first argument to PantherTestCaseTrait::createPantherClient client constructor."
-                    )
-                ->end()
-            ->end()
-        ;
+        $configuration = new PantherConfiguration();
+        $builder->append($configuration->addOptionsNode());
     }
 
     /**
diff --git a/src/Robertfausk/Behat/PantherExtension/ServiceContainer/PantherConfiguration.php b/src/Robertfausk/Behat/PantherExtension/ServiceContainer/PantherConfiguration.php
new file mode 100644
index 0000000..75c89bc
--- /dev/null
+++ b/src/Robertfausk/Behat/PantherExtension/ServiceContainer/PantherConfiguration.php
@@ -0,0 +1,47 @@
+<?php
+declare(strict_types=1);
+
+namespace Robertfausk\Behat\PantherExtension\ServiceContainer;
+
+use Symfony\Component\Config\Definition\Builder\ArrayNodeDefinition;
+use Symfony\Component\Config\Definition\Builder\TreeBuilder;
+use Symfony\Component\Config\Definition\ConfigurationInterface;
+
+/**
+ * @author Robert Freigang <robertfreigang@gmx.de>
+ */
+class PantherConfiguration implements ConfigurationInterface
+{
+    /**
+     * @inheritDoc
+     */
+    public function getConfigTreeBuilder()
+    {
+        $treeBuilder = new TreeBuilder('panther');
+        if (\method_exists($treeBuilder, 'getRootNode')) {
+            $root = $treeBuilder->getRootNode();
+        } else {
+            $root = $treeBuilder->root('panther');
+        }
+
+        $root->append($this->addOptionsNode());
+
+        return $treeBuilder;
+    }
+
+    public function addOptionsNode(): ArrayNodeDefinition
+    {
+        $treeBuilder = new TreeBuilder('options');
+
+        $node = $treeBuilder->getRootNode()
+            ->info(
+                "These are the options passed as first argument to PantherTestCaseTrait::createPantherClient client constructor."
+            )
+            ->ignoreExtraKeys()
+            ->scalarPrototype()
+            ->end()
+        ;
+
+        return $node;
+    }
+}
diff --git a/tests/Behat/behat.yml b/tests/Behat/behat.yml
new file mode 100644
index 0000000..a84972a
--- /dev/null
+++ b/tests/Behat/behat.yml
@@ -0,0 +1,29 @@
+default:
+    suites:
+        web:
+            paths:
+                - '%paths.base%/features'
+            contexts:
+                - Behat\MinkExtension\Context\MinkContext
+    extensions:
+        Robertfausk\Behat\PantherExtension: ~ # no configuration here
+        Behat\MinkExtension:
+            browser_name:       chrome
+            javascript_session: javascript_chrome
+            sessions:
+                default:
+                    panther:
+                        options:
+                            webServerDir: '%paths.base%/public'
+                javascript:
+                    panther:
+                        options: ~
+                javascript_chrome:
+                    panther:
+                        options:
+                            browser: 'chrome'
+                            webServerDir: '%paths.base%/public'
+                javascript_firefox:
+                    panther:
+                        options:
+                            browser: 'firefox'
diff --git a/tests/Behat/features/simple.feature b/tests/Behat/features/simple.feature
new file mode 100644
index 0000000..60c0095
--- /dev/null
+++ b/tests/Behat/features/simple.feature
@@ -0,0 +1,6 @@
+Feature: Just a simple call to a php script
+
+  @javascript_chrome
+  Scenario: I am on a php and see the echo response
+    And I am on "index.php"
+    Then I should see "Huhuuu!"
diff --git a/tests/Behat/public/index.php b/tests/Behat/public/index.php
new file mode 100644
index 0000000..27ce14c
--- /dev/null
+++ b/tests/Behat/public/index.php
@@ -0,0 +1,6 @@
+<?php
+declare(strict_types=1);
+
+echo '<div id="output"></div>';
+
+echo '<script type="application/javascript">window.document.getElementById("output").append("Huhuuu!")</script>';
diff --git a/tests/Unit/Driver/PantherFactoryTest.php b/tests/Unit/Driver/PantherFactoryTest.php
new file mode 100644
index 0000000..e4fdea6
--- /dev/null
+++ b/tests/Unit/Driver/PantherFactoryTest.php
@@ -0,0 +1,75 @@
+<?php
+declare(strict_types=1);
+
+namespace Tests\Unit\Driver;
+
+use PHPUnit\Framework\TestCase;
+use Robertfausk\Behat\PantherExtension\ServiceContainer\Driver\PantherFactory;
+
+/**
+ * @author Robert Freigang <robertfreigang@gmx.de>
+ */
+class PantherFactoryTest extends TestCase
+{
+    public function test_support_javascript_is_true(): void
+    {
+        $pantherFactory = new PantherFactory();
+        $this->assertTrue($pantherFactory->supportsJavascript());
+    }
+
+    public function test_driver_name_is_panther(): void
+    {
+        $pantherFactory = new PantherFactory();
+        $this->assertSame('panther', $pantherFactory->getDriverName());
+    }
+
+    public function test_build_driver_with_default_options(): void
+    {
+        /** @see \Symfony\Component\Panther\PantherTestCaseTrait::$defaultOptions **/
+        $options = [
+            'webServerDir' => __DIR__.'/../../../../public',
+            'hostname' => '127.0.0.1',
+            'port' => 9080,
+            'router' => '',
+            'external_base_uri' => null,
+            'readinessPath' => '',
+            'browser' => 'chrome',
+        ];
+
+        $config = [
+            'options' => $options,
+        ];
+        $pantherFactory = new PantherFactory();
+        $definition = $pantherFactory->buildDriver($config);
+        $arguments = $definition->getArguments();
+
+        $this->assertArrayHasKey(0, $arguments, 'Arguments of definition should not be empty.');
+        $this->assertSame($options, $arguments[0]);
+    }
+
+    public function test_build_driver_with_empty_options(): void
+    {
+        $options = [];
+
+        $config = [
+            'options' => $options,
+        ];
+        $pantherFactory = new PantherFactory();
+        $definition = $pantherFactory->buildDriver($config);
+        $arguments = $definition->getArguments();
+
+        $this->assertArrayHasKey(0, $arguments, 'Arguments of definition should not be empty.');
+        $this->assertSame($options, $arguments[0]);
+    }
+
+    public function test_build_driver_without_options(): void
+    {
+        $config = [];
+        $pantherFactory = new PantherFactory();
+        $definition = $pantherFactory->buildDriver($config);
+        $arguments = $definition->getArguments();
+
+        $this->assertArrayHasKey(0, $arguments, 'Arguments of definition should not be empty.');
+        $this->assertSame(null, $arguments[0]);
+    }
+}
diff --git a/tests/Unit/PantherConfigurationTest.php b/tests/Unit/PantherConfigurationTest.php
new file mode 100644
index 0000000..c5abd90
--- /dev/null
+++ b/tests/Unit/PantherConfigurationTest.php
@@ -0,0 +1,79 @@
+<?php
+declare(strict_types=1);
+
+namespace Tests\Unit;
+
+use Matthias\SymfonyConfigTest\PhpUnit\ConfigurationTestCaseTrait;
+use PHPUnit\Framework\TestCase;
+use Robertfausk\Behat\PantherExtension\ServiceContainer\PantherConfiguration;
+
+/**
+ * @author Robert Freigang <robertfreigang@gmx.de>
+ */
+class PantherConfigurationTest extends TestCase
+{
+    use ConfigurationTestCaseTrait;
+
+    public function validConfigurationProvider(): array
+    {
+        return [
+            'empty options' => [['options' => []]],
+        ];
+    }
+
+    public function invalidConfigurationProvider(): array
+    {
+        return [
+            'misspelled options' => [['opions' => []], 'Unrecognized option "opions"'],
+        ];
+    }
+
+    /**
+     * @dataProvider invalidConfigurationProvider
+     *
+     * @param array  $configurationOptions
+     * @param string $message
+     */
+    public function test_invalid_configuration(array $configurationOptions, string $message): void
+    {
+        $this->assertConfigurationIsInvalid(
+            [
+                $configurationOptions,
+            ],
+            $message
+        );
+    }
+
+    /**
+     * @dataProvider validConfigurationProvider
+     *
+     * @param array $configurationOptions
+     */
+    public function test_valid_configuration(array $configurationOptions): void
+    {
+        $this->assertConfigurationIsValid(
+            [
+                $configurationOptions,
+            ]
+        );
+    }
+
+    public function test_processed_configuration(): void
+    {
+        $this->assertProcessedConfigurationEquals(
+            [
+                ['options' => ['hostname' => '127.0.0.1']],
+            ],
+            [
+                'options' => [
+                    'hostname' => '127.0.0.1',
+                ],
+            ]
+        );
+    }
+
+    protected function getConfiguration(): PantherConfiguration
+    {
+        return new PantherConfiguration();
+    }
+}