API: add list synchronizations endpoint

Author: glaubinix

src/Api/Synchronizations.php

@@ -0,0 +1,11 @@
+<?php
+
+namespace PrivatePackagist\ApiClient\Api;
+
+class Synchronizations extends AbstractApi
+{
+    public function all()
+    {
+        return $this->get('/synchronizations/');
+    }
+}

tests/Api/SynchronizationsTest.php

@@ -0,0 +1,42 @@
+<?php declare(strict_types=1);
+
+namespace PrivatePackagist\ApiClient\Api;
+
+use PHPUnit\Framework\MockObject\MockObject;
+
+class SynchronizationsTest extends ApiTestCase
+{
+    public function testAll()
+    {
+        $expected = [
+            [
+                "id" => 42,
+                "name" => "Acme Organization",
+                "isPrimary" => true,
+                "integration" => [
+                    "name" => "GitHub",
+                    "target" => "github",
+                    "url" => "https://github.com"
+                ],
+                "credentials" => 432,
+            ]
+        ];
+
+        /** @var Teams&MockObject $api */
+        $api = $this->getApiMock();
+        $api->expects($this->once())
+            ->method('get')
+            ->with($this->equalTo('/synchronizations/'))
+            ->willReturn($expected);
+
+        $this->assertSame($expected, $api->all());
+    }
+
+    /**
+     * @return string
+     */
+    protected function getApiClass()
+    {
+        return Synchronizations::class;
+    }
+}