context("rowLapply / rowSapply") test_that("rowLapply", { df = data.frame(a = 1:10, b = 10:1) expect_true(all(rowLapply(df, length, unlist = TRUE) == 2)) expect_true(all(rowLapply(df, sum, unlist = TRUE) == 11)) expect_true(all(unlist(rowLapply(df, Negate(is.list), unlist = TRUE)))) expect_true(all(unlist(rowLapply(df, is.list)))) fun = function(x, y) sum(c(unlist(x), y)) expect_equal(rowLapply(df[, 1L, drop = FALSE], fun, y = 1), as.list(2:11)) }) test_that("rowSapply", { df = data.frame(a = 1:10, b = 10:1) rownames(df) = letters[1:10] y1 = rep(2, nrow(df)) y2 = setNames(y1, rownames(df)) expect_equal(rowSapply(df, length, simplify = TRUE, use.names = FALSE), y1) expect_equal(rowSapply(df, length, simplify = TRUE, use.names = TRUE), y2) expect_equal(rowSapply(df, length, simplify = FALSE, use.names = FALSE), as.list(y1)) expect_equal(rowSapply(df, length, simplify = FALSE, use.names = TRUE), as.list(y2)) x1 = rowSapply(df, unlist, simplify = TRUE, use.names = TRUE) x2 = sapply(1:nrow(df), function(i) unlist(df[i,]), simplify = TRUE, USE.NAMES = FALSE) rownames(x2) = NULL; colnames(x2) = rownames(df) expect_equal(x1, x2) x1 = rowSapply(df, unlist, simplify = "rows", use.names = FALSE) x2 = as.matrix(data.frame(a = 1:10, b = 10:1)) expect_equal(x1, x2) x1 = rowSapply(data.frame(a = 1:2), function(r) r$a, simplify = "rows", use.names = FALSE) x2 = matrix(1:2, nrow = 2) expect_equal(x1, x2) })
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