Test.TypeSpecCrazy

Funny operators that are mere type aliases for the constructs in TypeSpec

Crazy Type operators for It

type (--*) title expr = It title expr infixr 3

Alias for It, note that the number of ~s is alway a multiple of 3. This provides the impression of an underlined title followed by other expectations.

It allows to write the following type:

type ExpectationWithTitle =
  TypeSpec (

     "This is a title for some assertions:"
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

     (2 + 2)  `Is`   4

   )

type (~~~) title expr = It title expr infixr 3

type (~~~~~~) title expr = It title expr infixr 3

type (~~~~~~~~~) title expr = It title expr infixr 3

type (~~~~~~~~~~~~) title expr = It title expr infixr 3

type (~~~~~~~~~~~~~~~) title expr = It title expr infixr 3

type (~~~~~~~~~~~~~~~~~~) title expr = It title expr infixr 3

type (~~~~~~~~~~~~~~~~~~~~~) title expr = It title expr infixr 3

type (~~~~~~~~~~~~~~~~~~~~~~~~) title expr = It title expr infixr 3

type (~~~~~~~~~~~~~~~~~~~~~~~~~~~) title expr = It title expr infixr 3

type (~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~) title expr = It title expr infixr 3

type (~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~) title expr = It title expr infixr 3

type (~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~) title expr = It title expr infixr 3

type (~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~) title expr = It title expr infixr 3

type (~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~) title expr = It title expr infixr 3

type (~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~) title expr = It title expr infixr 3

type (~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~) title expr = It title expr infixr 3

type (~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~) title expr = It title expr infixr 3

type (~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~) title expr = It title expr infixr 3

type (~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~) title expr = It title expr infixr 3

type (~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~) title expr = It title expr infixr 3

type (~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~) title expr = It title expr infixr 3

type (~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~) title expr = It title expr infixr 3

type (~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~) title expr = It title expr infixr 3

type (~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~) title expr = It title expr infixr 3

Crazy Type operators for TypeSpec

type (###) title expr = Explain title expr infixr 1

Create a TypeSpec with an initial description or title followed by some expectations. Note that the number of #s is alway a multiple of 3.

It allows to rewrite the example above in a shorter way:

type ExpectationWithTitleShorter =

  "This is a title for some assertions:"
  ######################################

  (2 + 2)  `Is`   4

type (######) title expr = Explain title expr infixr 1

type (#########) title expr = Explain title expr infixr 1

type (############) title expr = Explain title expr infixr 1

type (###############) title expr = Explain title expr infixr 1

type (##################) title expr = Explain title expr infixr 1

type (#####################) title expr = Explain title expr infixr 1

type (########################) title expr = Explain title expr infixr 1

type (###########################) title expr = Explain title expr infixr 1

type (##############################) title expr = Explain title expr infixr 1

type (#################################) title expr = Explain title expr infixr 1

type (####################################) title expr = Explain title expr infixr 1

type (#######################################) title expr = Explain title expr infixr 1

type (##########################################) title expr = Explain title expr infixr 1

type (#############################################) title expr = Explain title expr infixr 1

type (################################################) title expr = Explain title expr infixr 1

type (###################################################) title expr = Explain title expr infixr 1

type (######################################################) title expr = Explain title expr infixr 1

type (#########################################################) title expr = Explain title expr infixr 1

type (############################################################) title expr = Explain title expr infixr 1

type (###############################################################) title expr = Explain title expr infixr 1

type (##################################################################) title expr = Explain title expr infixr 1

type (#####################################################################) title expr = Explain title expr infixr 1

type (########################################################################) title expr = Explain title expr infixr 1

Grouping Aliases

type (-*) expectation1 expectation2 = expectation1 -/- expectation2 infixr 4

Crazy operator alias for -/-.

Make a list of expectations. The precedence of this operator is even higher than that of -*-.

type (-*-) expectation1 expectation2 = expectation1 -/- expectation2 infixr 3

Crazy operator alias for -/- with higher precedence.

It allows to group expectations more beautiful than using type level lists.

specCrazyMoreNested ::

  "Title"
  ######

    "Top-level "
    ~~~~~~~~~~~~

         "Nested:"
         ~~~~~~~~~
         Int `Is` Int
                            -*-
         Int `Is` Int
                            -*-
         Int `Is` Int

                            -/-

    "Top-level "
    ~~~~~~~~~~~~

         "Nested:"
         ~~~~~~~~~
         Int `Is` Int
                            -*-
             "Nested:"
             ~~~~~~~~~
             Int `Is` Int
                            -*-
             Int `Is` Int

specCrazyMoreNested = Valid

module Test.TypeSpec