public function testNewInstanceWhenAddingHeaderThatWasNotThereBefore()
{
$r = new Response(200, ['Foo' => 'Bar']);
$r2 = $r->withAddedHeader('Baz', 'Bam');
$this->assertNotSame($r, $r2);
$this->assertEquals('Bam', $r2->getHeaderLine('Baz'));
$this->assertEquals('Bar', $r2->getHeaderLine('Foo'));
}
public function testWithAddedHeaderThatDoesNotExist()
{
$r = new Response(200, ['Foo' => 'Bar']);
$r2 = $r->withAddedHeader('nEw', 'Baz');
$this->assertSame(['Foo' => ['Bar']], $r->getHeaders());
$this->assertSame(['Foo' => ['Bar'], 'nEw' => ['Baz']], $r2->getHeaders());
$this->assertSame('Baz', $r2->getHeaderLine('new'));
$this->assertSame(['Baz'], $r2->getHeader('new'));
}
