Ensure that tables in the gherkin scenario respect A4 rule

Medium

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BDD

The A4 rule for writing Gherkin scenarios is a guideline that aims to keep scenarios concise and manageable. The "A4" reference comes from the standard size of a piece of paper, suggesting that a scenario should ideally fit within an A4 sheet.

Examples

Example 1:

Negative

Incorrect implementation that violates the practice.

Feature: DealsAggregation
Apply a multi-level aggregation on a list of items. 
Sides : A for Asset, L for Liability

Scenario: Simple aggregation
	Given the deals
		| Amount | Side | Bucket | Groups             | Category     | Code                 | startDate  | endDate    | counterpart | status  | currency | dealType | dealId | collateral |
		| 16     | A    | 1M     | EF, External Loans | Central bank | Central bank         | 01/01/2024 | 01/01/2024 | BNP         | pending | EUR      | loan     | 2      | house      |
		| 3      | A    | 2M     | EF, External Loans | Central bank | Central bank         | 01/01/2024 | 01/01/2024 | BNP         | pending | EUR      | loan     | 2      | house      |
		| 117    | L    | 1M     | EF, External Loans | Central bank | Central bank         | 01/01/2024 | 01/01/2024 | BNP         | pending | EUR      | loan     | 2      | house      |
		| 3      | A    | 1M     | EF, Client Deposit | Supra        | EPIC                 | 01/01/2024 | 01/01/2024 | BNP         | pending | EUR      | loan     | 2      | house      |
		| 6      | L    | 1M     | EF, Client Deposit | Supra        | EPIC                 | 01/01/2024 | 01/01/2024 | BNP         | pending | EUR      | loan     | 2      | house      |
		| 34     | A    | 1M     | GBIS, GLFI         | Bank         | Bank & Credit invest | 01/01/2024 | 01/01/2024 | BNP         | pending | EUR      | loan     | 2      | house      |
	When I aggregate by buckets
	Then I get
		| Bucket | Side | Amount |
		| 1M     | A    | 53     |
		| 1M     | L    | 123    |
		| 2M     | A    | 3      |
		| 2M     | L    | 0      |