Add testPlaybackLegacyCassette() to ensure that legacy cassettes with no index keys playback.

Author: bwood

tests/Unit/CassetteTest.php

@@ -62,4 +62,26 @@ public function testHasResponseFound(): void
 
  $this->assertTrue($this->cassette->hasResponse($request), 'Expected true if request was found.');
  }
+
+ /**
+ * Test playback of a legacy cassette which does not have an index key.
+ */
+ public function testPlaybackLegacyCassette(): void
+ {
+ $request = new Request('GET', 'https://example.com');
+ $response = new Response(200, [], 'sometest');
+
+ // Create recording array with no index key.
+ $recording = [
+ 'request' => $request->toArray(),
+ 'response' => $response->toArray(),
+ ];
+
+ $storage = new Storage\Yaml(vfsStream::url('test/'), 'json_test');
+ $storage->storeRecording($recording);
+ $configuration = new Configuration();
+ $cassette = new Cassette('cassette_name', $configuration, $storage);
+
+ $this->assertEquals($response->toArray(), $cassette->playback($request)->toArray());
+ }
 }