# Test fars_summarize_years
expect_that(fars_summarize_years(2013:2014),
is_a("data.frame"))
expect_that(nrow(fars_summarize_years(2013)),
equals(12))
expect_that(ncol(fars_summarize_years(2013)),
equals(2))
expect_that(ncol(fars_summarize_years(2013:2015)),
equals(4))
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