camunda/feel-scala

number() should return null instead of failing the evaluation

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saig0 commented

Describe the bug
I use the function number() to convert a string into a number. If the string is not a number then the evaluation fails.

An evaluation failure is unexpected and it doesn't allow to handle this case.

To Reproduce
Steps to reproduce the behavior:

  1. Evaluate the expression
number("x")
  1. Verify that the evaluation fails

Expected behavior
The function should return null if the string is not a valid number.

See the TCK test case 0058-feel-number-function.

Environment

  • FEEL engine version: 1.17.0
  • Affects:
    • Camunda Automation Platform 7: [7.x]
    • Zeebe broker: [0.x]

Related to #623