Move the automatic expectation verification from trait to test case

Author: rybakit

README.md

@@ -483,8 +483,25 @@ final class FileCreatedExpectation implements Expectation
 }
 ```
 
-Now, to be able to use this method, include the trait `PHPUnitExtras\Expectation\Expectations` in your test case class, 
-or inherit it from `PHPUnitExtras\TestCase`, where this trait is already included. 
+Now, to be able to use this expectation, inherit your test case class from `PHPUnitExtras\TestCase`
+(recommended) or include the `PHPUnitExtras\Expectation\Expectations` trait:
+
+```php
+use PHPUnit\Framework\TestCase;
+use PHPUnitExtras\Expectation\Expectations;
+
+final class MyTest extends TestCase
+{
+    use Expectations;
+
+    protected function tearDown() : void
+    {
+        $this->verifyExpectations();
+    }
+
+    // ...
+}
+```
 After that, call your expectation as shown below:
 
 ```php
@@ -497,7 +514,7 @@ public function testDumpPdfToFile() : void
 }
 ```
 
-For convenience, you can put this statement in a separate method or even group your expectations into a trait:
+For convenience, you can put this statement in a separate method and group your expectations into a trait:
 
 ```php
 namespace App\Tests\PhpUnit;
@@ -511,6 +528,8 @@ trait FileExpectations
         $this->expect(new FileCreatedExpectation($filename));
     }
 
+    // ...
+
     abstract protected function expect(Expectation $expectation) : void;
 }
 ```

src/Expectation/Expectations.php

@@ -18,9 +18,6 @@ trait Expectations
     /** @var ChainExpectation|null */
     private $expectations;
 
-    /**
-     * @after
-     */
     final protected function verifyExpectations() : void
     {
         $this->getExpectations()->verify();

src/TestCase.php

@@ -41,4 +41,12 @@ final protected function resolvePlaceholders(string $value) : string
 
         return $resolver->resolve($value, Target::fromTestCase($this));
     }
+
+    /**
+     * @after
+     */
+    final protected function verifyTestCaseExpectations() : void
+    {
+        $this->verifyExpectations();
+    }
 }