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+            "extra": {
+                "branch-alias": {
+                    "dev-master": "3.0-dev"
+                }
+            },
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Kore Nordmann",
+                    "email": "mail@kore-nordmann.de"
+                },
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de"
+                }
+            ],
+            "description": "Diff implementation",
+            "homepage": "https://github.com/sebastianbergmann/diff",
+            "keywords": [
+                "diff",
+                "udiff",
+                "unidiff",
+                "unified diff"
+            ],
+            "time": "2018-02-01T13:45:15+00:00"
+        },
+        {
+            "name": "sebastian/environment",
+            "version": "3.1.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sebastianbergmann/environment.git",
+                "reference": "cd0871b3975fb7fc44d11314fd1ee20925fce4f5"
+            },
+            "dist": {
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+                "reference": "cd0871b3975fb7fc44d11314fd1ee20925fce4f5",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^6.1"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "3.1.x-dev"
+                }
+            },
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de"
+                }
+            ],
+            "description": "Provides functionality to handle HHVM/PHP environments",
+            "homepage": "http://www.github.com/sebastianbergmann/environment",
+            "keywords": [
+                "Xdebug",
+                "environment",
+                "hhvm"
+            ],
+            "time": "2017-07-01T08:51:00+00:00"
+        },
+        {
+            "name": "sebastian/exporter",
+            "version": "3.1.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sebastianbergmann/exporter.git",
+                "reference": "234199f4528de6d12aaa58b612e98f7d36adb937"
+            },
+            "dist": {
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+                "reference": "234199f4528de6d12aaa58b612e98f7d36adb937",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.0",
+                "sebastian/recursion-context": "^3.0"
+            },
+            "require-dev": {
+                "ext-mbstring": "*",
+                "phpunit/phpunit": "^6.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "3.1.x-dev"
+                }
+            },
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Jeff Welch",
+                    "email": "whatthejeff@gmail.com"
+                },
+                {
+                    "name": "Volker Dusch",
+                    "email": "github@wallbash.com"
+                },
+                {
+                    "name": "Bernhard Schussek",
+                    "email": "bschussek@2bepublished.at"
+                },
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de"
+                },
+                {
+                    "name": "Adam Harvey",
+                    "email": "aharvey@php.net"
+                }
+            ],
+            "description": "Provides the functionality to export PHP variables for visualization",
+            "homepage": "http://www.github.com/sebastianbergmann/exporter",
+            "keywords": [
+                "export",
+                "exporter"
+            ],
+            "time": "2017-04-03T13:19:02+00:00"
+        },
+        {
+            "name": "sebastian/global-state",
+            "version": "2.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sebastianbergmann/global-state.git",
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+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^6.0"
+            },
+            "suggest": {
+                "ext-uopz": "*"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.0-dev"
+                }
+            },
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de"
+                }
+            ],
+            "description": "Snapshotting of global state",
+            "homepage": "http://www.github.com/sebastianbergmann/global-state",
+            "keywords": [
+                "global state"
+            ],
+            "time": "2017-04-27T15:39:26+00:00"
+        },
+        {
+            "name": "sebastian/object-enumerator",
+            "version": "3.0.3",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sebastianbergmann/object-enumerator.git",
+                "reference": "7cfd9e65d11ffb5af41198476395774d4c8a84c5"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/sebastianbergmann/object-enumerator/zipball/7cfd9e65d11ffb5af41198476395774d4c8a84c5",
+                "reference": "7cfd9e65d11ffb5af41198476395774d4c8a84c5",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.0",
+                "sebastian/object-reflector": "^1.1.1",
+                "sebastian/recursion-context": "^3.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^6.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "3.0.x-dev"
+                }
+            },
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de"
+                }
+            ],
+            "description": "Traverses array structures and object graphs to enumerate all referenced objects",
+            "homepage": "https://github.com/sebastianbergmann/object-enumerator/",
+            "time": "2017-08-03T12:35:26+00:00"
+        },
+        {
+            "name": "sebastian/object-reflector",
+            "version": "1.1.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sebastianbergmann/object-reflector.git",
+                "reference": "773f97c67f28de00d397be301821b06708fca0be"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/sebastianbergmann/object-reflector/zipball/773f97c67f28de00d397be301821b06708fca0be",
+                "reference": "773f97c67f28de00d397be301821b06708fca0be",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^6.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.1-dev"
+                }
+            },
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de"
+                }
+            ],
+            "description": "Allows reflection of object attributes, including inherited and non-public ones",
+            "homepage": "https://github.com/sebastianbergmann/object-reflector/",
+            "time": "2017-03-29T09:07:27+00:00"
+        },
+        {
+            "name": "sebastian/recursion-context",
+            "version": "3.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sebastianbergmann/recursion-context.git",
+                "reference": "5b0cd723502bac3b006cbf3dbf7a1e3fcefe4fa8"
+            },
+            "dist": {
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+                "reference": "5b0cd723502bac3b006cbf3dbf7a1e3fcefe4fa8",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^6.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "3.0.x-dev"
+                }
+            },
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Jeff Welch",
+                    "email": "whatthejeff@gmail.com"
+                },
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de"
+                },
+                {
+                    "name": "Adam Harvey",
+                    "email": "aharvey@php.net"
+                }
+            ],
+            "description": "Provides functionality to recursively process PHP variables",
+            "homepage": "http://www.github.com/sebastianbergmann/recursion-context",
+            "time": "2017-03-03T06:23:57+00:00"
+        },
+        {
+            "name": "sebastian/resource-operations",
+            "version": "1.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sebastianbergmann/resource-operations.git",
+                "reference": "ce990bb21759f94aeafd30209e8cfcdfa8bc3f52"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/sebastianbergmann/resource-operations/zipball/ce990bb21759f94aeafd30209e8cfcdfa8bc3f52",
+                "reference": "ce990bb21759f94aeafd30209e8cfcdfa8bc3f52",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.6.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de"
+                }
+            ],
+            "description": "Provides a list of PHP built-in functions that operate on resources",
+            "homepage": "https://www.github.com/sebastianbergmann/resource-operations",
+            "time": "2015-07-28T20:34:47+00:00"
+        },
+        {
+            "name": "sebastian/version",
+            "version": "2.0.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sebastianbergmann/version.git",
+                "reference": "99732be0ddb3361e16ad77b68ba41efc8e979019"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/sebastianbergmann/version/zipball/99732be0ddb3361e16ad77b68ba41efc8e979019",
+                "reference": "99732be0ddb3361e16ad77b68ba41efc8e979019",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.6"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.0.x-dev"
+                }
+            },
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de",
+                    "role": "lead"
+                }
+            ],
+            "description": "Library that helps with managing the version number of Git-hosted PHP projects",
+            "homepage": "https://github.com/sebastianbergmann/version",
+            "time": "2016-10-03T07:35:21+00:00"
+        },
+        {
+            "name": "theseer/tokenizer",
+            "version": "1.1.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/theseer/tokenizer.git",
+                "reference": "cb2f008f3f05af2893a87208fe6a6c4985483f8b"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/theseer/tokenizer/zipball/cb2f008f3f05af2893a87208fe6a6c4985483f8b",
+                "reference": "cb2f008f3f05af2893a87208fe6a6c4985483f8b",
+                "shasum": ""
+            },
+            "require": {
+                "ext-dom": "*",
+                "ext-tokenizer": "*",
+                "ext-xmlwriter": "*",
+                "php": "^7.0"
+            },
+            "type": "library",
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Arne Blankerts",
+                    "email": "arne@blankerts.de",
+                    "role": "Developer"
+                }
+            ],
+            "description": "A small library for converting tokenized PHP source code into XML and potentially other formats",
+            "time": "2017-04-07T12:08:54+00:00"
+        },
+        {
+            "name": "webmozart/assert",
+            "version": "1.3.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/webmozart/assert.git",
+                "reference": "0df1908962e7a3071564e857d86874dad1ef204a"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/webmozart/assert/zipball/0df1908962e7a3071564e857d86874dad1ef204a",
+                "reference": "0df1908962e7a3071564e857d86874dad1ef204a",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^5.3.3 || ^7.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^4.6",
+                "sebastian/version": "^1.0.1"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.3-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Webmozart\\Assert\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Bernhard Schussek",
+                    "email": "bschussek@gmail.com"
+                }
+            ],
+            "description": "Assertions to validate method input/output with nice error messages.",
+            "keywords": [
+                "assert",
+                "check",
+                "validate"
+            ],
+            "time": "2018-01-29T19:49:41+00:00"
+        }
+    ],
+    "packages-dev": [],
+    "aliases": [],
+    "minimum-stability": "stable",
+    "stability-flags": [],
+    "prefer-stable": false,
+    "prefer-lowest": false,
+    "platform": [],
+    "platform-dev": []
+}
diff --git a/phpunit.xml b/phpunit.xml
new file mode 100644
index 0000000..5031250
--- /dev/null
+++ b/phpunit.xml
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit backupGlobals="false"
+         backupStaticAttributes="false"
+         bootstrap="vendor/autoload.php"
+         colors="true"
+         convertErrorsToExceptions="true"
+         convertNoticesToExceptions="true"
+         convertWarningsToExceptions="true"
+         processIsolation="false"
+         stopOnFailure="false"
+         syntaxCheck="false">
+    <testsuites>
+        <testsuite name="Package Test Suite">
+            <directory suffix=".php">./tests/</directory>
+        </testsuite>
+    </testsuites>
+    <filter>
+        <whitelist>
+            <directory suffix=".php">./</directory>
+            <exclude>
+                <directory suffix=".php">./vendor</directory>
+                <directory suffix=".php">./tests</directory>
+            </exclude>
+        </whitelist>
+    </filter>
+</phpunit>
\ No newline at end of file
diff --git a/src/Provider/Mailchimp.php b/src/Provider/Mailchimp.php
new file mode 100644
index 0000000..1cc0df1
--- /dev/null
+++ b/src/Provider/Mailchimp.php
@@ -0,0 +1,102 @@
+<?php
+
+namespace Ae\OAuth2\Client\Provider;
+
+use League\OAuth2\Client\Grant\AbstractGrant;
+use League\OAuth2\Client\Provider\AbstractProvider;
+use League\OAuth2\Client\Provider\Exception\IdentityProviderException;
+use League\OAuth2\Client\Provider\ResourceOwnerInterface;
+use League\OAuth2\Client\Token\AccessToken;
+use Psr\Http\Message\ResponseInterface;
+
+class Mailchimp extends AbstractProvider
+{
+    protected $baseUrl = 'https://login.mailchimp.com/oauth2';
+
+    /**
+     * Returns the base URL for authorizing a client.
+     *
+     * Eg. https://oauth.service.com/authorize
+     *
+     * @return string
+     */
+    public function getBaseAuthorizationUrl()
+    {
+        return $this->baseUrl . '/authorize';
+    }
+
+    /**
+     * Returns the base URL for requesting an access token.
+     *
+     * Eg. https://oauth.service.com/token
+     *
+     * @param array $params
+     * @return string
+     */
+    public function getBaseAccessTokenUrl(array $params)
+    {
+        return $this->baseUrl . '/token';
+    }
+
+    /**
+     * Returns the URL for requesting the resource owner's details.
+     *
+     * @param AccessToken $token
+     * @return string
+     */
+    public function getResourceOwnerDetailsUrl(AccessToken $token)
+    {
+        return $this->baseUrl . '/metadata?oauth_token=' . $token->getToken();
+    }
+
+    /**
+     * Returns the default scopes used by this provider.
+     *
+     * This should only be the scopes that are required to request the details
+     * of the resource owner, rather than all the available scopes.
+     *
+     * @return array
+     */
+    protected function getDefaultScopes()
+    {
+        return [];
+    }
+
+    /**
+     * Checks a provider response for errors.
+     *
+     * @throws IdentityProviderException
+     * @param  ResponseInterface $response
+     * @param  array|string $data Parsed response data
+     * @return void
+     */
+    protected function checkResponse(ResponseInterface $response, $data)
+    {
+        if (isset($data['error'])) {
+            throw new IdentityProviderException(
+                $data['error'] ?: $response->getReasonPhrase(),
+                $response->getStatusCode(),
+                $response
+            );
+        }
+    }
+
+    /**
+     * Generates a resource owner object from a successful resource owner
+     * details request.
+     *
+     * @param  array $response
+     * @param  AccessToken $token
+     * @return ResourceOwnerInterface
+     */
+    protected function createResourceOwner(array $response, AccessToken $token)
+    {
+        return new MailchimpResourceOwner($response);
+    }
+
+    protected function createAccessToken(array $response, AbstractGrant $grant)
+    {
+        $response['expires_in'] = 2147483647 - time();
+        return parent::createAccessToken($response, $grant);
+    }
+}
diff --git a/src/Provider/MailchimpResourceOwner.php b/src/Provider/MailchimpResourceOwner.php
new file mode 100644
index 0000000..db4bb17
--- /dev/null
+++ b/src/Provider/MailchimpResourceOwner.php
@@ -0,0 +1,41 @@
+<?php
+
+namespace Ae\OAuth2\Client\Provider;
+
+use League\OAuth2\Client\Provider\ResourceOwnerInterface;
+
+class MailchimpResourceOwner implements ResourceOwnerInterface
+{
+    /** @var array */
+    private $response;
+    
+    public function __construct(array $response = [])
+    {
+        $this->response = $response;
+    }
+
+    public function getId()
+    {
+       return $this->response['user_id'];
+    }
+
+    public function toArray()
+    {
+        return $this->response;
+    }
+
+    public function getDc()
+    {
+        return $this->response['dc'];
+    }
+
+    public function getAccountName()
+    {
+        return $this->response['accountname'];
+    }
+
+    public function getApiEndpoint()
+    {
+        return $this->response['api_endpoint'];
+    }
+}
diff --git a/tests/Provider/MailchimpTest.php b/tests/Provider/MailchimpTest.php
new file mode 100644
index 0000000..cad9989
--- /dev/null
+++ b/tests/Provider/MailchimpTest.php
@@ -0,0 +1,152 @@
+<?php
+namespace Ae\OAuth2\Client\Test\Provider;
+
+use Ae\OAuth2\Client\Provider\Mailchimp;
+use GuzzleHttp\ClientInterface;
+use League\OAuth2\Client\Provider\Exception\IdentityProviderException;
+use League\OAuth2\Client\Tool\QueryBuilderTrait;
+use PHPUnit\Framework\TestCase;
+use Psr\Http\Message\ResponseInterface;
+
+class MailchimpTest extends TestCase
+{
+    use QueryBuilderTrait;
+
+    /**
+     * @var Mailchimp
+     */
+    protected $provider;
+
+    /**
+     * @var string
+     */
+    protected $accessTokenResponse;
+
+    protected function setUp()
+    {
+        $this->provider = new Mailchimp([
+            'clientId' => 'client_id',
+            'clientSecret' => 'client_secret',
+            'redirectUri' => 'http://return_url.test',
+        ]);
+        $this->accessTokenResponse = json_encode([
+            'access_token' => 'access_token',
+            'expires_in' => 0,
+            'scope' => null
+        ]);
+    }
+
+    public function testAuthorizationUrl()
+    {
+        $url = $this->provider->getAuthorizationUrl();
+        $uri = parse_url($url);
+        parse_str($uri['query'], $query);
+
+        $this->assertEquals('/oauth2/authorize', $uri['path']);
+        $this->assertArrayHasKey('client_id', $query);
+        $this->assertArrayHasKey('redirect_uri', $query);
+        $this->assertArrayHasKey('state', $query);
+        $this->assertArrayHasKey('scope', $query);
+        $this->assertArrayHasKey('response_type', $query);
+        $this->assertArrayHasKey('approval_prompt', $query);
+        $this->assertNotNull($this->provider->getState());
+    }
+
+    public function testScopes()
+    {
+        $scopeSeparator = ',';
+        $options = ['scope' => [uniqid('', true), uniqid('', true)]];
+        $query = ['scope' => implode($scopeSeparator, $options['scope'])];
+        $url = $this->provider->getAuthorizationUrl($options);
+        $encodedScope = $this->buildQueryString($query);
+        $this->assertContains($encodedScope, $url);
+    }
+
+    public function testGetBaseAccessTokenUrl()
+    {
+        $params = [];
+
+        $url = $this->provider->getBaseAccessTokenUrl($params);
+        $uri = parse_url($url);
+
+        $this->assertEquals('/oauth2/token', $uri['path']);
+    }
+
+    public function testGetAccessToken()
+    {
+        $response = $this->getMockBuilder(ResponseInterface::class)->getMock();
+
+        $response->expects($this->once())->method('getBody')->willReturn($this->accessTokenResponse);
+        $response->expects($this->once())->method('getHeader')->willReturn(['content-type' => 'json']);
+
+        $client = $this->getMockBuilder(ClientInterface::class)->getMock();
+        $client->expects($this->once())->method('send')->willReturn($response);
+
+        $this->provider->setHttpClient($client);
+
+        $token = $this->provider->getAccessToken('authorization_code', ['code' => 'mock_authorization_code']);
+
+        $this->assertEquals('access_token', $token->getToken());
+        $this->assertEquals(2147483647, $token->getExpires());
+        $this->assertNull($token->getRefreshToken());
+    }
+
+    public function testUserData()
+    {
+        $name = uniqid('', true);
+        $userId = mt_rand(1000,9999);
+
+        $results = [
+            'user_id' => $userId,
+            'accountname' => $name,
+            'dc' => 'us10',
+            'api_endpoint' => 'http://fakeurl'
+        ];
+
+        $response = $this->getMockBuilder(ResponseInterface::class)->getMock();
+        $response->expects($this->once())->method('getBody')->willReturn($this->accessTokenResponse);
+        $response->expects($this->once())->method('getHeader')->willReturn(['content-type' => 'json']);
+
+        $userResponse = $this->getMockBuilder(ResponseInterface::class)->getMock();
+
+        $userResponse->expects($this->once())->method('getBody')->willReturn(json_encode($results));
+        $userResponse->expects($this->once())->method('getHeader')->willReturn(['content-type' => 'json']);
+
+        $client = $this->getMockBuilder(ClientInterface::class)->getMock();
+        $client->expects($this->exactly(2))->method('send')->will(
+            $this->onConsecutiveCalls( $response, $userResponse )
+        );
+
+        $this->provider->setHttpClient($client);
+
+        $token = $this->provider->getAccessToken('authorization_code', ['code' => 'mock_authorization_code']);
+        $user = $this->provider->getResourceOwner($token);
+
+        $this->assertEquals($userId, $user->getId());
+        $this->assertEquals($userId, $user->toArray()['user_id']);
+        $this->assertEquals($name, $user->getAccountName());
+        $this->assertEquals('http://fakeurl', $user->getApiEndpoint());
+        $this->assertEquals('us10', $user->getDc());
+
+        $this->assertEquals($results, $user->toArray());
+    }
+
+    public function testExceptionThrownWhenErrorObjectReceived()
+    {
+        $message = uniqid('', true);
+
+        $this->expectException(IdentityProviderException::class);
+        $this->expectExceptionMessage($message);
+
+        $response = $this->getMockBuilder(ResponseInterface::class)->getMock();
+        $response->expects($this->once())->method('getBody')->willReturn('{"error": "'.$message.'"}');
+        $response->expects($this->once())->method('getHeader')->willReturn(['content-type' => 'json']);
+
+        $client = $this->getMockBuilder(ClientInterface::class)->getMock();
+        $client->expects($this->once())->method('send')->willReturn($response);
+
+        $this->provider->setHttpClient($client);
+
+        $this->provider->getAccessToken('authorization_code', ['code' => 'mock_authorization_code']);
+    }
+}
\ No newline at end of file