Add a function for preprocessing an input before taking a test snapshot — snapshotPreprocessInput
  v1.7.3|Source: 
  
  
    
R/snapshot.R
  Description
Add a function for preprocessing an input before taking a test snapshot
Arguments
- inputId
 Name of the input value.
- fun
 A function that takes the input value and returns a modified value. The returned value will be used for the test snapshot.
- session
 A Shiny session object.