Nothing
context("as.mpoly()")
test_that("numeric", {
expect_equal(
as.mpoly(3),
structure(list(c("coef" = 3)), class = "mpoly")
)
expect_equal(
as.mpoly(1:3),
structure(
list(
c("coef" = 1),
c("x" = 1, "coef" = 2),
c("x" = 2, "coef" = 3)
),
class = "mpoly"
)
)
})
test_that("polynomial", {
expect_equal(
as.mpoly(hermite.h.polynomials(3)[[4]]),
structure(
list(
c("x" = 1, "coef" = -12),
c("x" = 3, "coef" = 8)
),
class = "mpoly"
)
)
})
test_that("lm", {
expect_equal(
as.mpoly(lm(y ~ x, data = data.frame("x" = c(0,1), "y" = c(1,3)))),
structure(
list(
c("x" = 1, "coef" = 2),
c("coef" = 1)
),
class = "mpoly"
)
)
expect_equal(
as.mpoly(
lm(
y ~ poly(x, 1, raw = TRUE),
data = data.frame("x" = c(0,1), "y" = c(1,3))
)
),
structure(
list(
c("x" = 1, "coef" = 2),
c("coef" = 1)
),
class = "mpoly"
)
)
expect_equal(
as.mpoly(
lm(
y ~ poly(x, 2, raw = TRUE),
data = data.frame("x" = c(-1,0,1), "y" = c(0,-1,0))
)
),
structure(
list(
c("x" = 1, "coef" = 0),
c("x" = 2, "coef" = 1),
c("coef" = -1)
),
class = "mpoly"
)
)
expect_equal(
as.mpoly(
lm(
y ~ x + I(x^2),
data = data.frame("x" = c(-1,0,1), "y" = c(0,-1,0))
)
),
structure(
list(
c("x" = 1, "coef" = 0),
c("x" = 2, "coef" = 1),
c("coef" = -1)
),
class = "mpoly"
)
)
expect_error(
as.mpoly(
lm(
y ~ poly(x, 2, raw = FALSE),
data = data.frame("x" = c(-1,0,1), "y" = c(0,-1,0))
)
),
"poly() statements currently must contain raw = TRUE.",
fixed = TRUE
)
})
test_that("errors", {
expect_error(
as.mpoly("x"),
"objects of class character not supported by as.mpoly().",
fixed = TRUE
)
})
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