Add artifact to an existing package

Author: wissem

README.md

@@ -73,6 +73,7 @@
             * [Create an artifact package file](#create-an-artifact-package-file)
             * [Create an artifact package](#create-an-artifact-package)
             * [Update artifact files of a package](#update-artifact-files-of-a-package)
+            * [Add an artifact file to an existing package](#add-an-artifact-file-to-an-existing-package)
          * [Credential](#credential)
             * [List an organization's credentials](#list-an-organizations-credentials)
             * [Show a credential](#show-a-credential)
@@ -98,7 +99,7 @@
          * [Validate incoming webhook payloads](#validate-incoming-webhook-payloads)
       * [License](#license)
 
-<!-- Added by: wissem, at: Tue Jul 21 10:32:47 CEST 2020 -->
+<!-- Added by: wissem, at: Thu Oct 15 10:37:57 CEST 2020 -->
 
 <!--te-->
 
@@ -604,6 +605,15 @@ $result = $client->packages()->artifacts()->showPackageArtifacts('acme-website/p
 $artifactFileIds = [42, 43];
 $client->packages()->editArtifactPackage('acme-website/package', $artifactFileIds);
 ```
+
+#### Add an artifact file to an existing package
+
+```php
+$packageId = 1;
+$fileName = 'package1.zip';
+$file = file_get_contents($fileName);
+$client->packages()->artifacts()->add($packageId, $file, 'application/zip', $fileName);
+```
 ### Credential
 
 #### List an organization's credentials

src/Api/Packages/Artifacts.php

@@ -21,6 +21,14 @@ public function create($file, $contentType, $fileName)
         ]));
     }
 
+    public function add($packageId, $file, $contentType, $fileName)
+    {
+        return $this->postFile('/packages/'.$packageId.'/artifacts/', $file, array_filter([
+            'Content-Type' => $contentType,
+            'X-FILENAME' => $fileName
+        ]));
+    }
+
     public function show($artifactId)
     {
         return $this->get(sprintf('/packages/artifacts/%s/', $artifactId));

tests/Api/Packages/ArtifactsTest.php

@@ -35,6 +35,29 @@ public function testCreate()
         $this->assertSame($expected, $api->create($rawFileContent, $headers['Content-Type'], $headers['X-FILENAME']));
     }
 
+    public function testAdd()
+    {
+        $packageId = 10;
+        $expected = [
+            'id' => 1,
+        ];
+        $rawFileContent = 'foobar';
+        $headers = [
+            'Content-Type' => 'application/zip',
+            'X-FILENAME' => 'file.zip'
+        ];
+
+        /** @var Artifacts&\PHPUnit_Framework_MockObject_MockObject $api */
+        $api = $this->getApiMock();
+        $api->expects($this->once())
+            ->method('postFile')
+            ->with($this->equalTo('/packages/'.$packageId.'/artifacts/'), $rawFileContent, $headers)
+            ->willReturn($expected);
+
+
+        $this->assertSame($expected, $api->add($packageId,$rawFileContent, $headers['Content-Type'], $headers['X-FILENAME']));
+    }
+
     public function testShow()
     {
         $expected = [