CL3 1110-feel-contains contains an explicit reference to type null about tck HOT 4 CLOSED

On the same topic. The DMN 1.1. standard does not specify the behaviour of contains when one argument or both are null (see Table 60 page 133).

However in our test cases we have

contains(null, null), contains(null,"bar"), contains("bar", null) expected to return null.

If such behaviour is not specified in DMN 1.1. or to be published in DMN 1.2. we should not have test cases without discussing them with DMN RTF.

Am I missing something?

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@opatrascoiu regarding your first comment above, you are correct. Would you mind submitting a PR to fix it?

Regarding the second comment, it falls into the broad range of cases of functions called with invalid parameters. They should return null as per the spec and report an error. As we start introducing tests for error cases, this kind of scenario will show up more and more.

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@etirelli just created PR to fix type.

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Merged.

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