Nothing
test_that("check_convergence", {
skip_if_not_installed("parameters")
set.seed(123)
d <- data.frame(
a = sample.int(3, 100, replace = TRUE) + 3,
b = sample.int(3, 100, replace = TRUE) + 3,
c = sample.int(3, 100, replace = TRUE) + 3,
d = sample.int(3, 100, replace = TRUE),
e = sample.int(3, 100, replace = TRUE),
f = sample.int(3, 100, replace = TRUE)
)
pca <- parameters::principal_components(d, n = 2)
out <- check_itemscale(pca)
expect_length(out, 2L)
expect_equal(
out[[1]]$Mean,
vapply(d[out[[1]]$Item], mean, numeric(1)),
tolerance = 1e-4,
ignore_attr = TRUE
)
expect_equal(
out[[2]]$Difficulty,
item_difficulty(d[out[[2]]$Item])$Difficulty,
tolerance = 1e-4,
ignore_attr = TRUE
)
})
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