expect_true_false_linter: Require usage of 'expect_true(x)' over 'expect_equal(x,...

In lintr: A 'Linter' for R Code

Require usage of expect_true(x) over expect_equal(x, TRUE)

Description

testthat::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.

Usage

expect_true_false_linter()

Tags

best_practices, package_development, pkg_testthat, readability

See Also

linters for a complete list of linters available in lintr.

Examples

# will produce lints
lint(
  text = "expect_equal(x, TRUE)",
  linters = expect_true_false_linter()
)

lint(
  text = "expect_equal(x, FALSE)",
  linters = expect_true_false_linter()
)

# okay
lint(
  text = "expect_true(x)",
  linters = expect_true_false_linter()
)

lint(
  text = "expect_false(x)",
  linters = expect_true_false_linter()
)

lintr documentation built on April 12, 2025, 1:42 a.m.