Parse.Promise Edge Cases

gistfile1.coffee

  try
    Parse.Promise.as().then( ->
      Parse.Promise.as 1, 2, 3
    ).then((a, b, c) ->
      # a, b, and c all have values
      console.error "1. a: #{a}, b: #{b}, c: #{c}"
    )

    # Can we transform Parse.Promise.error into a success?
    Parse.Promise.error().then( null, (error) ->
      Parse.Promise.as "I'm fine"
    ).then((arg) ->
      # The success block prints with "I'm fine"
      console.error "2. Success block called: #{arg}"
    , (error) ->
      console.error "2. Failure block called: #{error}"
    )

    # If a `then` callback returns an object, does the next then get called
    # with that object as the argument?
    Parse.Promise.as().then( ->
      "I'm not a promise"
    ).then((arg) ->
      # This block prints with "I'm not a promise"
      console.error "3. Argument in success block: #{arg}"
    , (error) ->
      console.error "3. Argument in failure block: #{error}"
    )

    # What if the object is an array? (Does the promise resolve with apply()?)
    Parse.Promise.as().then( ->
      ["I'm not a promise", "either"]
    ).then((arg1, arg2) ->
      # arg1 is an array, arg2 is undefined
      console.error "4. Arguments in success block: #{JSON.stringify(arg1)}, #{JSON.stringify(arg2)}"
    , (error) ->
      console.error "4. Argument in failure block: #{error}"
    )

    Parse.Promise.as().then( ->
      Parse.Promise.when(
        1
        2
        3
      )
    ).then((a, b, c) ->
      # a, b and c have the values 1, 2 and 3
      console.error "5. a: #{a}, b: #{b}, c: #{c}"
    , (error) ->
      console.error "5. Error in second promise: #{JSON.stringify(error)}"
    )

  catch e
    console.error "DONE - Caught error in test block: #{JSON.stringify(e)}"