test_that("`zoo_smooth()` works", {
x <- zoo_simulate(cols = 1, seed = 1)
x_smooth <- zoo_smooth_exponential(x = x, alpha = 0.2)
expect_true(sd(x[, 1]) > sd(x_smooth[, 1]))
x_smooth <- zoo_smooth_window(x = x)
expect_true(sd(x[, 1]) > sd(x_smooth[, 1]))
})
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