error: Assert failure
  --> tests_failed/assert_variable.hurl:8:0
   |
 8 | variable "toto" equals "tata"
   |   actual:   none
   |   expected: string <tata>
   |

error: Undefined variable
  --> tests_failed/assert_variable.hurl:9:28
   |
 9 | variable "status" equals {{unknown}}
   |                            ^^^^^^^ you must set the variable unknown
   |

error: Assert failure
  --> tests_failed/assert_variable.hurl:10:0
   |
10 | variable "status" equals {{type}}
   |   actual:   int <200>
   |   expected: string <text/html; charset=utf-8>
   |

error: Assert failure
  --> tests_failed/assert_variable.hurl:11:0
   |
11 | variable "status" equals {{length}}
   |   actual:   int <200>
   |   expected: string <0>
   |

