Nothing
test_that("regex_year_date function works correctly", {
# Test the function with the "yyyy" format
regex <- regex_year_date("yyyy")
expect_match("2023", regex)
expect_no_match("2023-09-29", regex)
# Test the function with the "yyyy-MM-dd" format
regex <- regex_year_date("yyyy-MM-dd")
expect_match("2023-09-29", regex)
expect_no_match("2023/09/29", regex)
# Add more tests here for other formats
})
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