improve header check in the case that it fails and update tests since they now make another fedora call

src/Flysystem/Adapter/FedoraAdapter.php

@@ -253,7 +253,8 @@ class FedoraAdapter implements AdapterInterface {
     $headers = [
       'Content-Type' => $this->mimeTypeGuesser->guess($path),
     ];
-    if ($this->has($path)) {
+    $heads_response = $this->fedora->getResourceHeaders($path);
+    if (isset($heads_response) && $heads_response->getStatusCode() == 200) {
       $fedora_url = $path;
       $date = new DateTime();
       $timestamp = $date->format("D, d M Y H:i:s O");

tests/src/Kernel/FedoraAdapterTest.php

@@ -84,6 +84,10 @@ class FedoraAdapterTest extends IslandoraKernelTestBase {
   protected function createAdapterForWrite() {
     $fedora_prophecy = $this->prophesize(IFedoraApi::class);
 
+    $prophecy = $this->prophesize(Response::class);
+    $prophecy->getStatusCode()->willReturn(201);
+    $fedora_prophecy->createVersion('', Argument::any(), NULL,
+    Argument::any())->willReturn($prophecy->reveal());
     $prophecy = $this->prophesize(Response::class);
     $prophecy->getStatusCode()->willReturn(201);
 
@@ -111,6 +115,9 @@ class FedoraAdapterTest extends IslandoraKernelTestBase {
    */
   protected function createAdapterForWriteFail() {
     $fedora_prophecy = $this->prophesize(IFedoraApi::class);
+    $prophecy = $this->prophesize(Response::class);
+    $prophecy->getStatusCode()->willReturn(500);
+    $fedora_prophecy->getResourceHeaders('')->willReturn($prophecy->reveal());
 
     $prophecy = $this->prophesize(Response::class);
     $prophecy->getStatusCode()->willReturn(500);
@@ -562,6 +569,14 @@ class FedoraAdapterTest extends IslandoraKernelTestBase {
     $prophecy->getStatusCode()->willReturn(201);
     $response = $prophecy->reveal();
 
+    $date = new \DateTime();
+    $timestamp = $date->format("D, d M Y H:i:s O");
+    $fedora_prophecy->createVersion('',
+      Argument::any(), NULL,
+    Argument::any())->willReturn($prophecy->reveal());
+    $prophecy = $this->prophesize(Response::class);
+    $prophecy->getStatusCode()->willReturn(201);
+
     $fedora_prophecy->saveResource(Argument::any(), Argument::any(), Argument::any())->willReturn($response);
 
     $prophecy = $this->prophesize(Response::class);