[jboss-jira] [JBoss JIRA] (DROOLS-4636) Update Scenario Cheatsheet to mention MVEL and Background

[Kris Verlaenen (Jira)]

     [ https://issues.redhat.com/browse/DROOLS-4636?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kris Verlaenen updated DROOLS-4636:
-----------------------------------
    Sprint: 2019 Week 44-46 (from Okt 28), 2019 Week 47-49 (from Nov 18), 2019 Week 50-52 (from Dec 9), 2020 Week 01-03 (from Dec 30), 2020 Week 04-06 (from Jan 20)  (was: 2019 Week 44-46 (from Okt 28), 2019 Week 47-49 (from Nov 18), 2019 Week 50-52 (from Dec 9), 2020 Week 01-03 (from Dec 30))


> Update Scenario Cheatsheet to mention MVEL and Background
> ---------------------------------------------------------
>
>                 Key: DROOLS-4636
>                 URL: https://issues.redhat.com/browse/DROOLS-4636
>             Project: Drools
>          Issue Type: Task
>          Components: Scenario Simulation and Testing
>    Affects Versions: 7.27.0.Final
>            Reporter: Anna Dupliak
>            Assignee: Daniele Zonca
>            Priority: Minor
>              Labels: CustomerFocus, drools-tools
>
> Update Scenario Cheatsheet for MVEL expression usage.
> h3. Here are some topics that could be mentioned:
> Expressions for Rule based scenarios for simple types
> * Starts from "*#*"
> * Runs for +properties+
> * Runs for +duplicated+ properties
> * Returns the +same+ type as property type in *GIVEN*
> * Returns boolean in *EXPECTED*
> * Receives rule processed value as a *parameter* in *EXPECTED* via keyword "*actualValue*"
> * Applies java.util.Objects.equals(actualValue, expression result) on the expression result if the *EXPECTED* value not a *boolean*
> * Could run any of java function for the project
> * Exports and imports as any other value
> Limitations
> 1. Mvel expression results +not property same+ type - drives scenario +failure, error reason and highlighted+
> Use case:
> User inputs 1/2 to Integer property
> 2.Mvel execution throws +exception+ - drives scenario execution +stopping, failure, error alert+
> Use case:
> User inputs inexistent MVEL function  in one of the properties
> 3.Mvel expression +exception stops+ expression +execution+ for all *EXPECT* colons
> Use case:
> User got one of the GIVEN fact expression excepted 
> 4.Mvel +cannot be mixed+ with simple expressions in one cell
> Use case:
> For cell inputs :
> {code:java}
> [#4+4,68]
> #actualvalue>1
> {code}



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