Megaparsec’s test suite as a standalone package. The reason for separtion is
that we can avoid circular dependency on hspec-megaparsec and thus avoid
keeping copies of its source files in our test suite, as we had to do
before. Another benefit is that we can export some auxiliary functions in
megaparsec-tests which can be used by other test suites, for example in
the parser-combinators-tests package.
Version of megaparsec-tests will be kept in sync with versions of
megaparsec from now on.
