# balance target ----------------------------------------------------------
# result should be reproducible if same seed is used
test_that("balance_target()", {
data <- iris
data$is_versicolor <- ifelse(data$Species == "versicolor", 1, 0)
expect_equal(balance_target(data, target = is_versicolor, seed = 123),
balance_target(data, target = is_versicolor, seed = 123)
)
})
# weight_target -----------------------------------------------------------
# weight target() with rare target_ind = 1
test_that("weight_target()", {
expect_equal(weight_target(data.frame(id = 1:5, target_ind = c(0, 0, 0, 0, 1)),
target = target_ind),
c(1, 1, 1, 1, 4)
)
})
# weight target() with rare target_ind = 0
test_that("weight_target()", {
expect_equal(weight_target(data.frame(id = 1:5, target_ind = c(1, 1, 1, 1, 0)),
target = target_ind),
c(1, 1, 1, 1, 4)
)
})
# mix_color ---------------------------------------------------------------
# mix 2 colors and get 3
test_that("mix_color()", {
expect_equal(mix_color("black", "white", n = 3),
c("#000000", "#7F7F7F", "#FFFFFF")
)
})
# mix 1 color and get 3
test_that("mix_color()", {
expect_equal(mix_color("blue", n = 3),
c("#7F7FFF", "#0000FF", "#00007F")
)
})
# mix 1 color and get 5
test_that("mix_color()", {
expect_equal(length(mix_color("blue", n = 5)),
5
)
})
# mix 1 color and get 5, middle color is the same as original
test_that("mix_color()", {
expect_equal(mix_color("#0000FF", n = 5)[3],
"#0000FF"
)
})
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