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15 lines
432 B
R
15 lines
432 B
R
# library(testthat)
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test_that("str_extract returns correct", {
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ls <- do.call(c, lapply(sample(4:8, 20, T), function(i) {
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paste(sample(letters, i, T), collapse = "")
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}))
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ds <- do.call(c, lapply(1:20, function(i) {
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paste(sample(ls, 1), i, sample(ls, 1), "23", sep = "_")
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}))
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expect_equal(nchar(str_extract(ds, "([0-9]+)")),c(rep(1,9),rep(2,11)))
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expect_error(str_extract(data.frame(ds), "([0-9]+)"))
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}) |