Create tests for URL endpoints

[chovanecm]

For testing that the Sacredboard backend returns what is expected, tests should be created that send requests to the Backend and check the response.
The tester should be able to select the backend to test against but the tests should be performed on a known set of data.

What to test:

1. /api/run - simple fetch, sorting, filtering, pagination
2. /api/run/ - a single run including the full run object, including config and info.
3. TBD

The outputs in json may have different formatting (e.g. not pretty-printed).
Note: the content of "object" contains dates serialized as timestamps: there is currently no front-end functionality to convert it to back to a date as it is not needed (the start_time is already passed as a formatted string in the Run header):

        "start_time":{  
           "$date":1489763136401
        },

/api/run Example

{
    "draw": 1,
    "recordsTotal": 2,
    "recordsFiltered": 2,
    "data": [
    {
        "id": "3",
        "experiment_name": "iris_rbf_svm",
        "command": "run",
        "status": "COMPLETED",
        "is_alive": false,
        "start_time": "15:05:36 17.3.2017",
        "heartbeat": "15:05:36 17.3.2017",
        "heartbeat_diff": 6535250.874869,
        "hostname": "vmmint18",
        
        "result":0.95
    },
        
    {
        "id": "4",
        "experiment_name": "German nouns",
        "command": "runExperiment",
        "status": "RUNNING",
        "is_alive": false,
        "start_time": "09:49:56 30.3.2017",
        "heartbeat": "09:50:26 30.3.2017",
        "heartbeat_diff": 5430960.722107,
        "hostname": "ntbthinkpad",
        
        "result":""
    }]

/api/run/id Example where id=3

{  
   "draw":1,
   "recordsTotal":1,
   "recordsFiltered":1,
   "data":[  
      {  
         "id":"3",
         "experiment_name":"iris_rbf_svm",
         "command":"run",
         "status":"COMPLETED",
         "is_alive":false,
         "start_time":"15:05:36 17.3.2017",
         "heartbeat":"15:05:36 17.3.2017",
         "heartbeat_diff":6535396.954588,
         "hostname":"vmmint18",
         "result":0.95,
         "object":{  
            "host":{  
               "python_version":"3.5.2",
               "cpu":"Intel(R) Core(TM) i7-6600U CPU @ 2.60GHz",
               "os":[  
                  "Linux",
                  "Linux-4.4.0-64-generic-x86_64-with-LinuxMint-18.1-serena"
               ],
               "hostname":"vmmint18"
            },
            "info":{  

            },
            "result":0.95,
            "format":"MongoObserver-0.7.0",
            "status":"COMPLETED",
            "heartbeat":{  
               "$date":1489763136431
            },
            "config":{  
               "array":[  
                  "One",
                  "Two"
               ],
               "C":1.0,
               "seed":562201636,
               "gamma":0.7
            },
            "stop_time":{  
               "$date":1489763136430
            },
            "captured_out":"INFO - iris_rbf_svm - Running command 'run'\nINFO - iris_rbf_svm - Started run with ID \"3\"\nINFO - iris_rbf_svm - Result: 0.95\nINFO - iris_rbf_svm - Completed after 0:00:00\n",
            "start_time":{  
               "$date":1489763136401
            },
            "experiment":{  
               "dependencies":[  
                  "numpy==1.12.0",
                  "sacred==0.7b2",
                  "sklearn==0.18.1"
               ],
               "base_dir":"/media/sf_Martin/Documents/archiv/archiv/\u0161kola/\u010cVUT/Magistr/Diplomka/sandbox",
               "name":"iris_rbf_svm",
               "sources":[  
                  [  
                     "iris.py",
                     {  
                        "$oid":"58cbfb407ef9e60d73d66868"
                     }
                  ]
               ],
               "repositories":[  

               ]
            },
            "resources":[  

            ],
            "_id":3,
            "meta":{  
               "options":{  
                  "--print_config":false,
                  "COMMAND":null,
                  "--comment":null,
                  "--loglevel":null,
                  "--beat_interval":null,
                  "--priority":null,
                  "--tiny_db":null,
                  "--queue":false,
                  "UPDATE":[  

                  ],
                  "--file_storage":null,
                  "--unobserved":false,
                  "with":false,
                  "help":false,
                  "--mongo_db":"sacred07",
                  "--sql":null,
                  "--pdb":false,
                  "--help":false,
                  "--debug":false,
                  "--enforce_clean":false,
                  "--force":false
               },
               "command":"run"
            },
            "artifacts":[  

            ],
            "command":"run"
         }
      }
   ]
}