The LambdaTestCapture was an extension to LambdaTest with support for capturing test output as an in-memory data structure or as Json to a file or log. It was developed in Feb 2017. 47 Degrees has discontinued the development and maintenance of this extension. The source code is left here for those interested in studying it.

LambdaTestCapture is an extension to LambdaTest. LambdaTest is a functional testing library for Scala. LambdaTestCapture extends LambdaTest with support for capturing test output as an in-memory data structure or as Json to a file or log.

One of the goals of LambdaTest was to provide a small clean system that can be easily extended to suport new features and to customize it for specific projects. LambdaTest includes the ability to define reporters, classes that receive test results and output them. LambdaTestCapture is a good example of this extensibility where without any changes to the base system, it adds test result capture by defining the new capture function and a new capture reporter.

You should review the features of the base LambdaTest system before reading the documentation below.

Include LambdaTestCapture jar

"com.fortysevendeg" % "lambda-test-capture_2.12" % "1.3.0" % "test"

In your tests include

import com.fortysevendeg.lambdatest._
import CaptureLambdaReporter.capture

See the Example demo. Here we run the test using capture rather than run. The result of capture is a data structure consisting of maps and lists that contains the test results.

This data structure can be converted to Json using the Pretty or Compact fucntions defined in https://github.com/nestorpersist/json.

Test results can also be logged using the Persist Scala logger https://github.com/nestorpersist/logging.

Here is the Json output from the Example demo. Note that for the in-memory data structure, Json objects are represented asMap[String,Any] and Json arrays are represented as List[Any].

{"name":"example",
 "result":{"failed":1,"tests":2},
 "sub":
   [{"cmd":"label",
     "msg":"Initial Tests",
     "sub":
       [{"cmd":"test",
         "msg":"Eq test",
         "ok":true,
         "sub":
           [{"cmd":"assert",
             "data":"3",
             "msg":"Int eq test",
             "ok":true,
             "pos":{"file":"Example.scala","line":15}
            }
           ]
        }
       ]
    },
    {"cmd":"label",
     "msg":"Simple Tests",
     "sub":
       [{"cmd":"test",
         "msg":"Assert Test",
         "ok":false,
         "sub":
           [{"cmd":"assert",
             "data":"1 != 2",
             "msg":"Bad Int eq test",
             "ok":false,
             "pos":{"file":"Example.scala","line":20}
            },
            {"cmd":"assert",
             "msg":"should work",
             "ok":true,
             "pos":{"file":"Example.scala","line":21}
            }
           ]
        }
       ]
    }
   ]
}