Require usage of expect_true(x) over expect_equal(x, TRUE)
Source:R/expect_true_false_linter.R
expect_true_false_linter.Rdtestthat::expect_true() and testthat::expect_false() exist specifically
for testing the TRUE/FALSE value of an object.
testthat::expect_equal() and testthat::expect_identical() can also be
used for such tests, but it is better to use the tailored function instead.
See also
linters for a complete list of linters available in lintr.