Add issueStatelessChannelToken test (#607)

`/oauth2/v3/token` requires only 3 parameters, but client requires 5
parameters. Our client must work even if some of arguments are passed
`null` like `client.issueStatelessChannelToken("client_credentials",
null, null, "1234", "clientSecret")`. This change adds a test to verify
this.

Author: eucyt

test/clients/channel-access-token/Api/ChannelAccessTokenApiTest.php

@@ -0,0 +1,59 @@
+<?php
+/**
+ * Copyright 2024 LINE Corporation
+ *
+ * LINE Corporation licenses this file to you under the Apache License,
+ * version 2.0 (the "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at:
+ *
+ *   https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+
+namespace LINE\Tests\Clients\ChannelAccessToken\Api;
+
+use GuzzleHttp\ClientInterface;
+use GuzzleHttp\Psr7\Request;
+use GuzzleHttp\Psr7\Response;
+use LINE\Clients\ChannelAccessToken\Api\ChannelAccessTokenApi;
+use Mockery;
+use PHPUnit\Framework\TestCase;
+
+class ChannelAccessTokenApiTest extends TestCase
+{
+    protected function setUp(): void
+    {
+        parent::setUp();
+    }
+
+    public function testIssueStatelessChannelToken(): void
+    {
+        $client = Mockery::mock(ClientInterface::class);
+        $client->shouldReceive('send')
+            ->with(
+                Mockery::on(function (Request $request) {
+                    $this->assertEquals('POST', $request->getMethod());
+                    $this->assertEquals('https://api.line.me/oauth2/v3/token', (string)$request->getUri());
+                    $this->assertEquals('grant_type=client_credentials&client_id=1234&client_secret=clientSecret', (string)$request->getBody());
+                    return true;
+                }),
+                []
+            )
+            ->once()
+            ->andReturn(new Response(
+                status: 200,
+                headers: [],
+                body: json_encode(['access_token' => 'accessToken', 'expires_in' => 30, 'token_type' => 'Bearer',]),
+            ));
+        $api = new ChannelAccessTokenApi($client);
+        $response = $api->issueStatelessChannelToken(grantType: "client_credentials", clientId: "1234", clientSecret: "clientSecret");
+        $this->assertEquals('accessToken', $response->getAccessToken());
+        $this->assertEquals(30, $response->getExpiresIn());
+        $this->assertEquals('Bearer', $response->getTokenType());
+    }
+}

test/clients/messaging-api/Api/MessagingApiApiTest.php

@@ -50,7 +50,7 @@ public function testGetFollowers(): void
                 body: json_encode(['userIds' => ["Uaaaaaaaa...", "Ubbbbbbbb...", "Ucccccccc..."], 'next' => "yANU9IA.."]),
             ));
         $api = new MessagingApiApi($client);
-        $followers = $api->getFollowers(limit:  99);
+        $followers = $api->getFollowers(limit: 99);
         $this->assertEquals(["Uaaaaaaaa...", "Ubbbbbbbb...", "Ucccccccc..."], $followers->getUserIds());
         $this->assertEquals("yANU9IA..", $followers->getNext());
     }