test: Improve test assertions

Author: DannyvdSluijs

tests/Constraints/TypeTest.php

@@ -116,6 +116,7 @@ public function testValidateTypeNameWording($nameWording)
         $m->setAccessible(true);
 
         $m->invoke($t, $nameWording);
+        $this->expectNotToPerformAssertions();
     }
 
     public function testInvalidateTypeNameWording()

tests/Uri/Retrievers/CurlTest.php

@@ -10,7 +10,9 @@ class CurlTest extends TestCase
         public function testRetrieveFile()
         {
             $c = new Curl();
-            $c->retrieve(realpath(__DIR__ . '/../../fixtures/foobar.json'));
+            $result = $c->retrieve(realpath(__DIR__ . '/../../fixtures/foobar.json'));
+
+            self::assertStringEqualsFileCanonicalizing(realpath(__DIR__ . '/../../fixtures/foobar.json'), $result);
         }
 
         public function testRetrieveNonexistantFile()
@@ -26,7 +28,9 @@ public function testRetrieveNonexistantFile()
         public function testNoContentType()
         {
             $c = new Curl();
-            $c->retrieve(realpath(__DIR__ . '/../../fixtures') . '/foobar-noheader.json');
+            $result = $c->retrieve(realpath(__DIR__ . '/../../fixtures') . '/foobar-noheader.json');
+
+            self::assertStringEqualsFileCanonicalizing(realpath(__DIR__ . '/../../fixtures/foobar.json'), $result);
         }
     }
 }

tests/Uri/UriRetrieverTest.php

@@ -358,7 +358,9 @@ public function testInvalidContentTypeEndpointsAdded()
         $retriever = new UriRetriever();
         $retriever->addInvalidContentTypeEndpoint('http://example.com');
 
-        $retriever->confirmMediaType($mock, 'http://example.com');
+        $result = $retriever->confirmMediaType($mock, 'http://example.com');
+
+        self::assertTrue($result);
     }
 
     public function testSchemaCache()