shorthands: Shorthands for 'testthat' expectations
In moodymudskipper/dubioustests: A Testing Package For Lazy Typers

These operators are powered by the package *doubt* and make testing very compact. * '?~' is 'testthat::expect_true()' * '?e~' is 'testthat::expect_equal()' * '?i~' is 'testthat::expect_identical' These operators have various intteresting properties * They support the unary notation, which allows us to write '?~ is.numeric(2)' * They support infix notation AND left hand side n-ary notation so that you choose between 'tan(pi/4) ?e~ 1', or, '?e~ tan(pi/4) ? 1' * They have the lowest precedence, which means for instance that '2 ?i~ 1 + 1' doesn't need brackets.

This is an infix version of 'testthat::test_that()', compact and handy to highlight the description and spare brackets.

desc %?% code

"?~"(object, info = NULL, label = NULL)

"?e~"(object, expected, ..., info = NULL, label = NULL,
  expected.label = NULL)

"?i~"(object, expected, info = NULL, label = NULL,
  expected.label = NULL, ...)

`object`	Computation and value to compare it to. Both arguments supports limited unquoting to make it easier to generate readable failures within a function or for loop. See quasi_label for more details.
`info`	Extra information to be included in the message. This argument is soft-deprecated and should not be used in new code. Instead see alternatives in quasi_label.
`label`	Used to customise failure messages. For expert use only.
`expected`	Computation and value to compare it to. Both arguments supports limited unquoting to make it easier to generate readable failures within a function or for loop. See quasi_label for more details.
`...`	For `expect_equal()` and `expect_equivalent()`, passed on `compare()`, for `expect_identical()` passed on to `identical()`. Used to control the details of the comparison.
`expected.label`	Used to customise failure messages. For expert use only.