test/function/default_value.unit

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>>> Named parameter.
f(  {  optional  =  null  }  ) {}
<<<
f({optional = null}) {}
>>> Named parameter with old separator.
### This syntax is no longer supported by new versions of Dart, but we want to
### support formatting older versions if possible.
f(  {  optional  :  1  +  2  }  ) {}
<<<
f({optional: 1 + 2}) {}
>>> Optional positional parameter.
f(  [  optional  =  1  +  2  ]  ) {}
<<<
f([optional = 1 + 2]) {}
>>> Split on positional default.
doStuff([parameter = veryLongDefaultValueThatSplits, another =
veryLongDefaultValue, third = alsoQuiteLongDefaultValue]) {}
<<<
doStuff([
  parameter =
      veryLongDefaultValueThatSplits,
  another = veryLongDefaultValue,
  third = alsoQuiteLongDefaultValue,
]) {}
>>> Split on named default.
doStuff({parameter = veryLongDefaultValueThatSplits, another =
veryLongDefaultValue, third = alsoAQuiteLongDefaultValue}) {}
<<<
doStuff({
  parameter =
      veryLongDefaultValueThatSplits,
  another = veryLongDefaultValue,
  third = alsoAQuiteLongDefaultValue,
}) {}
>>> Prefer block-like splitting for collection default values.
function([param = [element, element, element, element]]) { body; }
<<<
function([
  param = [
    element,
    element,
    element,
    element,
  ],
]) {
  body;
}