test_that("rownames of data frame are the name of list", {
string=c("aabb","cc","eeab","ce")
pattern="b\\nc"
expect_equal(c(2,4),multi_line_map(string=string,pattern=pattern))
pattern="eea"
expect_equal(c(3),multi_line_map(string=string,pattern=pattern))
pattern="eea\\n"
expect_null(multi_line_map(string=string,pattern=pattern))
})
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