Added test not to overwrite config file

tests/Unit/InstallHostpinnaclePackageTest.php

@@ -26,4 +26,27 @@ public function the_install_command_copies_the_configuration()
 
         $this->assertTrue(File::exists(config_path('hostpinnacle.php')));
     }
+
+    /**
+     * 
+     *
+     * @return void
+     */
+    public function when_a_config_file_is_present_users_can_choose_not_to_overwrite_it()
+    {
+        File::put(config_path('hostpinnacle.php'), 'test contents');
+        $this->assertTrue(File::exists(config_path('hostpinnacle.php')));
+
+        $command = $this->artisan('hostpinnacle:install');
+
+        $command->expectsConfirmation(
+            'Config file already exists. Do you want to overwrite it?',
+            'no'
+        );
+
+        $command->expectsOutput('Exiting. Hostpinnacle configuration was not overwritten');
+        $this->assertEquals('test contents', file_get_contents(config_path('hostpinnacle.php')));
+
+        unlink(config_path('hostpinnacle.php'));
+    }
 }