context("coalesce") test_that("coalesce", { expect_identical(coalesce(NULL), NULL) expect_identical(coalesce(1, NULL), 1) expect_identical(coalesce(NULL, 1), 1) f = function(a, b, c) coalesce(a,b,c) expect_identical(f(b = NULL, c = 1), 1) }) test_that("coalesce works with functions", { ff = function(x) 123 expect_identical(coalesce(NULL, ff), ff) # FIXME: this is a problem in R / missing. see issue 48 #expect_identical(coalesce(NULL, min), min) })
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