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DataTables

Cucumber Scala support DataTables with either:

  • Scala types using a DataTable as step definition argument and implicit conversions by importing import io.cucumber.scala.Implicits._
  • Java types in the step definitions arguments

The benefit of using Scala types if that you will be handling Options instead of potentially null values in the Java collections.

If you are sure to never have null/None values, you can use the .asScalaRawXXX convenient methods with remove the Option wrapper but still provide Scala collection types.

See below the exhaustive list of possible mappings.

Note: you can use transformers to map DataTables to custom types.

As Map of Map

Given the following table as Map of Map
|      | key1  | key2  | key3  |
| row1 | val11 | val12 | val13 |
| row2 | val21 |       | val23 |
| row3 | val31 | val32 | val33 |
Given("the following table as Map of Map") { (table: DataTable) =>
  val scalaTable: Map[String, Map[String, Option[String]]] = table.asScalaRowColumnMap
  // Map(
  //    "row1" -> Map("key1" -> Some("val11"), "key2" -> Some("val12"), "key3" -> Some("val13")),
  //    "row2" -> Map("key1" -> Some("val21"), "key2" -> None, "key3" -> Some("val23")),
  //    "row3" -> Map("key1" -> Some("val31"), "key2" -> Some("val32"), "key3" -> Some("val33"))
  // )
}

// Or:
Given("the following table as Map of Map") { (table: JavaMap[String, JavaMap[String, String]]) =>
  // Map(
  //    "row1" -> Map("key1" -> "val11", "key2" -> "val12", "key3" -> "val13"),
  //    "row2" -> Map("key1" -> "val21", "key2" -> null, "key3" -> "val23"),
  //    "row3" -> Map("key1" -> "val31", "key2" -> "val32", "key3" -> "val33")
  // )
}

As List of Map

Given the following table as List of Map
| key1  | key2  | key3  |
| val11 | val12 | val13 |
| val21 |       | val23 |
| val31 | val32 | val33 |
Given("the following table as List of Map") { (table: DataTable) =>
  val scalaTable: Seq[Map[String, Option[String]]] = table.asScalaMaps
  // Seq(
  //   Map("key1" -> Some("val11"), "key2" -> Some("val12"), "key3" -> Some("val13")),
  //   Map("key1" -> Some("val21"), "key2" -> None, "key3" -> Some("val23")),
  //   Map("key1" -> Some("val31"), "key2" -> Some("val32"), "key3" -> Some("val33"))
  // )
}

// Or:
Given("the following table as List of Map") { (table: JavaList[JavaMap[String, String]]) =>
  // Seq(
  //   Map("key1" -> "val11", "key2" -> "val12", "key3" -> "val13"),
  //   Map("key1" -> "val21", "key2" -> null, "key3" -> "val23"),
  //   Map("key1" -> "val31", "key2" -> "val32", "key3" -> "val33")
  // )
}

As Map of List

Given the following table as Map of List
| row1 | val11 | val12 | val13 |
| row2 | val21 |       | val23 |
| row3 | val31 | val32 | val33 |
Given("the following table as Map of List") { (table: DataTable) =>
  val scalaTable: Map[Seq[Option[String]]] = table.asScalaRowMap
  // Map(
  //   "row1" -> Seq(Some("val11"), Some("val12"), Some("val13")),
  //   "row2" -> Seq(Some("val21"), None, Some("val23")),
  //   "row3" -> Seq(Some("val31"), Some("val32"), Some("val33"))
  // )
}

// Or:
Given("the following table as Map of List") { (table: JavaMap[String, JavaList[String]]) =>
  // Map(
  //   "row1" -> Seq("val11", "val12", "val13"),
  //   "row2" -> Seq("val21", null, "val23"),
  //   "row3" -> Seq("val31", "val32", "val33")
  // )
}

As List of List

Given the following table as List of List
| val11 | val12 | val13 |
| val21 |       | val23 |
| val31 | val32 | val33 |
Given("the following table as List of List") { (table: DataTable) =>
  val scalaTable: Seq[Seq[Option[String]]] = table.asScalaLists
  // Seq(
  //   Seq(Some("val11"), Some("val12"), Some("val13")),
  //   Seq(Some("val21"), None, Some("val23")),
  //   Seq(Some("val31"), Some("val32"), Some("val33"))
  // )
}

// Or:
Given("the following table as List of List") { (table: JavaList[JavaList[String]]) =>
  // Seq(
  //   Seq("val11", "val12", "val13"),
  //   Seq("val21", null, "val23"),
  //   Seq("val31", "val32", "val33")
  // )
}

As Map

Given the following table as Map
| row1 | val11 |
| row2 |       |
| row3 | val31 |
Given("the following table as Map") { (table: DataTable) =>
  val scalaTable: Map[String, Option[String]] = table.asScalaMap[String, String]
  // Map(
  //   "row1" -> Some("val11"),
  //   "row2" -> None,
  //   "row3" -> Some("val31")
  // )
}

// Or:
Given("the following table as Map") { (table: JavaMap[String, String]) =>
  // Map(
  //   "row1" -> "val11",
  //   "row2" -> null,
  //   "row3" -> "val31"
  // )
}

As List

Given the following table as List
| val11 |
|       |
| val31 |
Given("the following table as List") { (table: DataTable) =>
  val scalaTable: Seq[Option[String]] = table.asScalaList
  // Seq(
  //   Some("val11"),
  //   None,
  //   Some("val31")
  // )
}

// Or:
Given("the following table as List") { (table: JavaList[String]) =>
  // Seq(
  //   "val11",
  //   null,
  //   "val31"
  // )
}

As DataTable

Given the following table as DataTable
# Any previous table definition is possible
| key1  | key2  | key3  |
| val11 | val12 | val13 |
| val21 | val22 | val23 |
| val31 | val32 | val33 |
Given("the following table as DataTable") { (table: DataTable) =>
  // Use the table any way you want, including any of the options defined previously
}