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context('spatialSign')
test_that("errors working", {
# vector
expect_error(spatialSign(iris$Species)
,"not defined"
)
# matrix
expect_error(spatialSign(as.matrix(iris))
,"not defined"
)
# data.frame
expect_error(spatialSign(iris)
,"not defined"
)
})
test_that("results match", {
x = -100:100
expect_true(all(spatialSign(x) == x/sqrt(sum(x^2))))
i4 <- spatialSign(iris[,1:4])
expect_true(all(as.matrix(i4) == t(apply(iris[,1:4], 1, spatialSign))))
})
test_that("high level tests", {
i4 <- spatialSign(iris[,1:4])
expect_true(all(colnames(i4) == names(iris[1:4])))
expect_true(all(dim(i4) == dim(iris[1:4])))
})
test_that("missing data", {
iris[c(1, 51, 101), 1] <- NA
i5 <- spatialSign(iris[,1:4])
exp_res <- iris[,1:4] /
apply(iris[,1:4], 1, function(x) sqrt(sum(x^2, na.rm = TRUE)))
expect_equivalent(i5, as.matrix(exp_res))
})
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