Add Header Test

tests/HeaderTest.php

@@ -0,0 +1,71 @@
+<?php
+/**
+ * Slim Framework (https://slimframework.com)
+ *
+ * @license https://github.com/slimphp/Slim-Psr7/blob/master/LICENSE.md (MIT License)
+ */
+
+declare(strict_types=1);
+
+namespace Slim\Tests\Psr7;
+
+use InvalidArgumentException;
+use PHPUnit\Framework\TestCase;
+use Slim\Psr7\Header;
+
+class HeaderTest extends TestCase
+{
+    /**
+     * Instantiate a default header.
+     *
+     * @return Header
+     */
+    protected function headerFactory(): Header
+    {
+        $originalName = 'ACCEPT';
+        $normalizedName = 'accept';
+        $values = ['application/json'];
+
+        return new Header($originalName, $normalizedName, $values);
+    }
+
+    public function testGetOriginalName()
+    {
+        $header = $this->headerFactory();
+        $this->assertEquals('ACCEPT', $header->getOriginalName());
+    }
+
+    public function testGetNormalizedName()
+    {
+        $header = $this->headerFactory();
+        $this->assertEquals('accept', $header->getNormalizedName());
+    }
+
+    public function testAddValue()
+    {
+        $header = $this->headerFactory();
+        $header2 = $header->addValue('text/html');
+
+        $this->assertEquals(['application/json', 'text/html'], $header->getValues());
+        $this->assertSame($header2, $header);
+    }
+
+    public function testAddValuesString()
+    {
+        $header = $this->headerFactory();
+        $header2 = $header->addValues('text/html');
+
+        $this->assertEquals(['application/json', 'text/html'], $header->getValues());
+        $this->assertSame($header2, $header);
+    }
+
+    /**
+     * @expectedException InvalidArgumentException
+     * @expectedExceptionMessage Parameter 1 of Header::addValues() should be a string or an array.
+     */
+    public function testAddValuesNull()
+    {
+        $header = $this->headerFactory();
+        $header->addValues(null);
+    }
+}