Nothing
test_that(
"Helper functions", {
# .i_find_in - helper function for missings to na function (faster %in%)
expect_equal(.i_find_in(as.numeric(1:5), as.numeric(4:5)), c(F,F,F,T,T))
expect_equal(.i_find_in(as.character(LETTERS[1:5]), as.character(c("A", "B"))), c(T,T,F,F,F))
expect_equal(.i_find_in(c(T,F,F,F,T), c(T)), c(T,F,F,F,T))
expect_equal(.i_find_in(c(T,F,F,F,T), c(F)), c(F,T,T,T,F))
expect_equal(.i_find_in(as.character(LETTERS[1:5]), as.numeric(4:5)), c(F,F,F,F,F))
}
)
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