Tips when writing tests in Laravel 4

writing_test_tips

TIP 1: Exception when performing many requests
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If you have more than one $this->call() or $this->client->request(), inside one test method,
you may experience problems like:
    {"error":{"type":"ErrorException","message":"Undefined variable: header","file":"/*,"line":1}}
    or
    Symfony \ Component \ HttpKernel \ Exception \ MethodNotAllowedHttpException

You can solve this problem, if you do $this->client->restart(), before every next request that you're making.