Data Table does not substitute parameter from Example in Scenario Outline

[fwpascual]

Describe the bug When using a Scenario Outline and a step that uses a Data Table, the parameter in the Example is not substituted for the row entry in the data table.

To Reproduce Steps to reproduce the behavior:

1. Add a step definition:

   Then("^I have a sample step with a=(\\d+),b=(\\d+)$") { matches, step in
   print("Match A = \(matches[1])")
   print("Match B = \(matches[2])")
   
   let dataTable = step.dataTable!
   for (rowIndex, row) in dataTable.rows.enumerated() {
       for (columnIndex, column) in row.enumerated() {
           print("Row[\(rowIndex)][\(columnIndex)] = \(column)")
       }
   }
   }

2. Add a scenario outline such as:

   Scenario Outline: Sample scenario
   Then I have a sample step with a=<paramA>,b=<paramB>
       | a        | b        |
       | <paramA> | <paramB> |
   
   Examples:
       | paramA | paramB |
       | 0      | 1      |
       | 5      | 10     |

Expected behavior For the second example, I expected an output like:

Match A = 5
Match B = 10
Row[0][0] = a
Row[0][1] = b
Row[1][0] = 5
Row[1][1] = 10

but instead received an output like:

Match A = 5
Match B = 10
Row[0][0] = a
Row[0][1] = b
Row[1][0] = <paramA>
Row[1][1] = <paramB>

Screenshots N/A

Additional context Add any other context about the problem here.

• XCode Version: XCode 13.3.1
• CucumberSwift Version: 3.3.21
• Example Feature File (if applicable)

Feature: Sample

Scenario Outline: Sample scenario
    Then I have a sample step with a=<paramA>,b=<paramB>
        | a        | b        |
        | <paramA> | <paramB> |

    Examples:
        | paramA | paramB |
        | 0      | 1      |
        | 5      | 10     |

[Tyler-Keith-Thompson]

Thanks for calling this out! I need to take a closer look at the cucumber spec for expected behavior and try to wrap my head around your example. It's been a while since I touched the datatable code.

Can you explain why you expected the output to be:

Row[0][0] = a
Row[0][1] = b
Row[1][0] = 5
Row[1][1] = 10

Instead of:

Row[0][0] = a
Row[0][1] = b
Row[1][0] = 0
Row[1][1] = 1

Is it that you expect the datatable attached to the then step to line up with the row in examples? So given that you have <paramA> | <paramB> on row 2, it'll read from row 2 in examples?

[fwpascual]

For what it's worth, in my experience using the cucumber-jvm library, I've been able to use Example parameters in Data Table entries. However, I can't speak towards what the spec says.

Sorry for the confusion, I probably should have included the full output. The one I provided was only for the second example index. It's probably more accurate if Row was DataTable in the output too, but I'll leave it for now.

// First Example (where paramA=0, paramB=1 in the Examples table)
Match A = 0
Match B = 1
Row[0][0] = a
Row[0][1] = b
Row[1][0] = 0
Row[1][1] = 1

// Second Example (where paramA=5, paramB=10 in the Examples table)
Match A = 5
Match B = 10
Row[0][0] = a
Row[0][1] = b
Row[1][0] = 5
Row[1][1] = 10

My expectation is that for every scenario run, for steps with a DataTable, if there are cells in the DataTable that reference a param, they get string replaced with the matching entry from the currently executing Examples table row.

[Tyler-Keith-Thompson]

Ahha! I'm totally tracking now. The params were being replaced in the step, but not in the datatable. Seems like the library is only partially meeting expectations. Okay great! I'll get a test case in place and work on this as I have time (with a little luck, I can work on it this weekend)

[Tyler-Keith-Thompson]

This is fixed but for some reason I'm having deployment issues. If you need an immediate workaround point your package manager to the main branch, rather than a specific version.

I'll try and get the deployment issues fixed up ASAP

[Tyler-Keith-Thompson]

Alright, this is good to go in CucumberSwift v3.3.22

[fwpascual]

Awesome, thanks so much for addressing this so quickly!