Nothing
test_that("demean works", {
df <- iris
set.seed(123)
df$ID <- sample(1:4, nrow(df), replace = TRUE) # fake-ID
set.seed(123)
df$binary <- as.factor(rbinom(150, 1, 0.35)) # binary variable
set.seed(123)
x <- demean(df, select = c("Sepal.Length", "Petal.Length"), group = "ID")
expect_snapshot(head(x))
set.seed(123)
expect_message(
x <- demean(df, select = c("Sepal.Length", "binary", "Species"), group = "ID"),
"have been coerced to numeric"
)
expect_snapshot(head(x))
set.seed(123)
expect_message(
y <- demean(df, select = ~ Sepal.Length + binary + Species, group = ~ID),
"have been coerced to numeric"
)
expect_message(
z <- demean(df, select = c("Sepal.Length", "binary", "Species"), group = "ID"),
"have been coerced to numeric"
)
expect_identical(y, z)
})
test_that("demean interaction term", {
dat <- data.frame(
a = c(1, 2, 3, 4, 1, 2, 3, 4),
x = c(4, 3, 3, 4, 1, 2, 1, 2),
y = c(1, 2, 1, 2, 4, 3, 2, 1),
ID = c(1, 2, 3, 1, 2, 3, 1, 2)
)
set.seed(123)
expect_snapshot(demean(dat, select = c("a", "x*y"), group = "ID"))
})
test_that("demean shows message if some vars don't exist", {
dat <- data.frame(
a = c(1, 2, 3, 4, 1, 2, 3, 4),
x = c(4, 3, 3, 4, 1, 2, 1, 2),
y = c(1, 2, 1, 2, 4, 3, 2, 1),
ID = c(1, 2, 3, 1, 2, 3, 1, 2)
)
set.seed(123)
expect_message(
demean(dat, select = "foo", group = "ID"),
regexp = "not found"
)
})
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