tests/testthat/test-funs-predicates.R

In YTLogos/dplyr: A Grammar of Data Manipulation

context("funs-predicates")

test_that("all_exprs() creates intersection", {
  expect_identical(all_exprs(am == 1), quo(am == 1))

  quo <- set_env(quo((!! quo(cyl == 2)) & (!! quo(am == 1))), base_env())
  expect_identical(all_exprs(cyl == 2, am == 1), quo)
})

test_that("any_exprs() creates union", {
  expect_identical(any_exprs(am == 1), quo(am == 1))

  quo <- set_env(quo((!! quo(cyl == 2)) | (!! quo(am == 1))), base_env())
  expect_identical(any_exprs(cyl == 2, am == 1), quo)
})

test_that("all_exprs() without expression returns an error", {
  expect_error(
    all_exprs(),
    "At least one expression must be given",
    fixed = TRUE
  )
})