MAPG-177 add test for GoogleOAuth

tests/OAuth/GoogleOAuthTest.php

@@ -0,0 +1,90 @@
+<?php
+
+namespace MapGuesser\Tests\OAuth;
+
+use MapGuesser\Interfaces\Http\IRequest;
+use MapGuesser\Interfaces\Http\IResponse;
+use MapGuesser\OAuth\GoogleOAuth;
+use PHPUnit\Framework\TestCase;
+
+final class GoogleOAuthTest extends TestCase
+{
+    public function testCanCreateDialogUrl(): void
+    {
+        $_ENV['GOOGLE_OAUTH_CLIENT_ID'] = 'xyz';
+        $state = 'random_state_string';
+        $redirectUrl = 'http://example.com/oauth';
+
+        $requestMock = $this->getMockBuilder(IRequest::class)
+            ->setMethods(['setUrl', 'setMethod', 'setQuery', 'setHeaders', 'send'])
+            ->getMock();
+        $googleOAuth = new GoogleOAuth($requestMock);
+
+        $dialogUrl = $googleOAuth->getDialogUrl($state, $redirectUrl);
+        $dialogUrlParsed = explode('?', $dialogUrl);
+
+        $this->assertEquals('https://accounts.google.com/o/oauth2/v2/auth', $dialogUrlParsed[0]);
+
+        parse_str($dialogUrlParsed[1], $dialogUrlQueryParams);
+
+        $expectedQueryParams = [
+            'response_type' => 'code',
+            'client_id' => $_ENV['GOOGLE_OAUTH_CLIENT_ID'],
+            'scope' => 'openid email',
+            'redirect_uri' => $redirectUrl,
+            'state' => $state,
+            'nonce' => hash('sha256', random_bytes(10) . microtime()),
+        ];
+
+        $this->assertEquals($expectedQueryParams['response_type'], $dialogUrlQueryParams['response_type']);
+        $this->assertEquals($expectedQueryParams['client_id'], $dialogUrlQueryParams['client_id']);
+        $this->assertEquals($expectedQueryParams['scope'], $dialogUrlQueryParams['scope']);
+        $this->assertEquals($expectedQueryParams['redirect_uri'], $dialogUrlQueryParams['redirect_uri']);
+        $this->assertEquals($expectedQueryParams['state'], $dialogUrlQueryParams['state']);
+        $this->assertMatchesRegularExpression('/^[a-f0-9]{64}$/', $dialogUrlQueryParams['nonce']);
+    }
+
+    public function testCanRequestToken(): void
+    {
+        $_ENV['GOOGLE_OAUTH_CLIENT_ID'] = 'abc';
+        $_ENV['GOOGLE_OAUTH_CLIENT_SECRET'] = 'xxx';
+        $code = 'code_from_google';
+        $redirectUrl = 'http://example.com/oauth';
+
+        $requestMock = $this->getMockBuilder(IRequest::class)
+            ->setMethods(['setUrl', 'setMethod', 'setQuery', 'setHeaders', 'send'])
+            ->getMock();
+        $responseMock = $this->getMockBuilder(IResponse::class)
+            ->setMethods(['getBody', 'getHeaders'])
+            ->getMock();
+        $googleOAuth = new GoogleOAuth($requestMock);
+
+        $expectedQueryParams = [
+            'code' => $code,
+            'client_id' => $_ENV['GOOGLE_OAUTH_CLIENT_ID'],
+            'client_secret' => $_ENV['GOOGLE_OAUTH_CLIENT_SECRET'],
+            'redirect_uri' => $redirectUrl,
+            'grant_type' => 'authorization_code',
+        ];
+
+        $requestMock->expects($this->once())
+            ->method('setUrl')
+            ->with($this->equalTo('https://oauth2.googleapis.com/token'));
+        $requestMock->expects($this->once())
+            ->method('setMethod')
+            ->with($this->equalTo(IRequest::HTTP_POST));
+        $requestMock->expects($this->once())
+            ->method('setQuery')
+            ->with($this->equalTo($expectedQueryParams));
+        $requestMock->expects($this->once())
+            ->method('send')
+            ->will($this->returnValue($responseMock));
+        $responseMock->expects($this->once())
+            ->method('getBody')
+            ->will($this->returnValue('{"test":"json"}'));
+
+        $token = $googleOAuth->getToken($code, $redirectUrl);
+
+        $this->assertEquals(['test' => 'json'], $token);
+    }
+}