Nothing
test_that("'actual' has same length as 'predicted'", {
y <- c(0, 2)
pred <- c(1, 1)
bad_pred <- 1:3
expect_silent(mse(y, pred))
expect_error(mse(y, bad_pred))
})
test_that("'actual' has same length as 'w'", {
y <- c(0, 2)
pred <- c(1, 1)
w <- 1:2
bad_w <- 1:3
expect_silent(weighted_mean(y - pred, w))
expect_error(weighted_mean(y - bad_pred, bad_w))
})
test_that("Negative weights yield error", {
y <- c(0, 2)
pred <- c(1, 1)
bad_w <- c(-1, 2)
expect_error(weighted_mean(y - bad_pred, bad_w))
})
test_that("Not all weights should be 0", {
y <- c(0, 2)
pred <- c(1, 1)
bad_w <- c(0.0, 0.0)
expect_error(weighted_mean(y - bad_pred, bad_w))
})
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