feat: add assertFaulty assertion (#21)

README.md

@@ -73,7 +73,7 @@ class CreateUserCommandTest extends KernelTestCase
         // test command throws exception
         $this->consoleCommand(CreateUserCommand::class)
             ->expectException(\RuntimeException::class, 'Username required!')
-            ->assertStatusCode(1)
+            ->assertStatusCode(1) // equivalent to ->assertFaulty()
             ->assertOutputContains('Could not create user!') // can still make assertions on output before exception was thrown
         ;
 

src/CommandResult.php

@@ -80,6 +80,13 @@ public function assertSuccessful(): self
         return $this->assertStatusCode(0);
     }
 
+    public function assertFaulty(): self
+    {
+        Assert::that($this->statusCode() > 0);
+
+        return $this;
+    }
+
     public function assertStatusCode(int $expected): self
     {
         Assert::that($this->statusCode())->is($expected);

tests/FunctionalTest.php

@@ -165,6 +165,7 @@ public function can_expect_exception(): void
             ->expectException(\RuntimeException::class, 'Exception thrown!')
             ->execute()
             ->assertStatusCode(1)
+            ->assertFaulty()
             ->assertOutputContains('Executing command...')
             ->assertOutputContains('Error output.')
         ;