Transform Tables of Data in Cucumber

Question

I'm working on Cucumber to write BDD tests for a Java program in a spring boot project.

Imagine this table as an example of user given data:

Given user wants to buy a T-shirt with the following attributes
  | color | size  |
  | blue  | small |
  | black | large |

the problem comes in mapping data, where I'm calling an API which gets data as json and knows colour not color and gets S and L as size properties not small and large.

is there any way to auto convert data from tables, including values or headers for tables with more columns and rows?

Answer 1

Here I will share how I've done that:

first create a POJO for mapping data:

@Setter
@Getter
@NoArgsConstructor
@AllArgsConstructor
public class TshirtInfo {

    private String colour;

    private String size;

    @Override
    public String toString() {
        return "TshirtInfo [colour: " + colour + ", size: " + size + "]";
    }

}

then create a DataTransformer class to map data to POJO:

public class DataTransformer implements TypeRegistryConfigurer {

    public DataTransformer () {
        this.map = new HashMap<>();
        this.map.put("small", "S");
        this.map.put("large", "L");
    }

    private Map<String, String> map;

    @Override
    public Locale locale() {
        return Locale.ENGLISH;
    }

    @Override
    public void configureTypeRegistry(TypeRegistry typeRegistry) {
        typeRegistry.defineDataTableType(new DataTableType(TshirtInfo.class,
                        (Map<String, String> row) -> {

                            String colour = row.get("color");
                            String size = this.map.get(row.get("size"));

                        return new LoginInfo(colour, size);
                        }
                )
        );
    }


}

finally for using them:

public class Stepdefs implements En {

    public Stepdefs () {

        Given("user wants to buy a T-shirt with the following attributes", (DataTable dataTable) -> {

            System.out.println(dataTable);

            List<TshirtInfo> infos = dataTable.asList(TshirtInfo.class);
            System.out.println(infos);

        .
        .
        .
        .
        // other parts of your code

}

Output would be like:

  | color | size  |
  | blue  | small |
  | black | large |

[TshirtInfo [colour: blue, size: S], TshirtInfo [colour: black, size: L]]

That's all.