When do we use the CollectionInterpreters

The CollectionInterpreters are used to express any kind of group, list or set of values.

When a CollectionInterpreters is executed, GreenPepper compares the list of expected values with the list of values returned by the system under development. The test result depends on the specific CollectionInterpreters selected.

GreenPepper offers four different CollectionInterpreters:

First row: Identification of the Collection Interpreter

As for all other interpreters, the first row of any CollectionInterpreter specifies the name of the interpreter and the name of the collection to be tested.

• Example - Provinces of Canada: A simple example would be a system containing the Canadian provinces name and code. In that particular case, we could define the collection as Canada Province Codes :

  list of

  Canada Province Codes

• Example - Phone Book : A phone book application able to manage the first name, last name and the phone number of people. The ListOfInterpreter could be express as

  list of

  phone book entries

Second row: Header

The second row is used to define the name of each attribute related to the members of the collection of data.

• Example - Provinces of Canada: The attributes for that example are the name and the code.

  list of	Canada Province Codes
  Name	Code

• Example - Phone Book : The attributes for that example are the first name, the last name and the phone number.

  list of	phone book entries
  FirstName	LastName	Phone Number

Other rows: A set of elements

From the third row, we specify the set of values to test.

• Example - Provinces of Canada :

  list of	Canada Province Codes
  Name	Code
  ALBERTA	AB
  BRITISH COLUMBIA	AB

• Example - Phone Book :

  list of	phone book entries
  FirstName	LastName	Phone Number
  Fred	Flintstone	(123) 456-7890
  Barney	Rubble	(123) 321-7666
  Great	Gazoo	(123) 989-4455

During execution, GreenPepper will color the rows in green if the rows are in the list of elements returned by the SUD as expected in the specification.
If a row is missing or in surplus in the list returned by the SUD, then GreenPepper will color the entire row in red and specify if the row is missing or in surplus.

Notes If GreenPepper specify that a row is missing, it means that the row is not in the list of elements provided by the system under development as it should be. If GreenPepper specify that a row is in surplus, it means that the row is in the list of elements provided by the system under development but it should not be.

Since the ListOfInterpreter expects to match exactly the list expected and the list returned by the SUD, GreenPepper compare each cell of the table separately. If the expected value is different from the returned value, GreenPepper color the cell in red and provide the two values.

Since the SupersetOfInterpreter accept that the specification may contains rows that are not contained in the SUD, GreenPepper will not color the rows in the specification but not returned by the SUD.