makeAssertCollection() returns a simple stack-like
closure you can pass to all functions of the
All messages get collected and can be reported with
Alternatively, you can easily write your own report function or customize the the output of
the report function to a certain degree.
See the example on how to push custom messages or retrieve all stored messages.
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makeAssertCollection() returns an object of class “AssertCollection” and
reportCollection returns invisibly
TRUE if no error is thrown (i.e., no message was
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