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# HEADER ####################################################
# This is file spam/tests/testthat/test-diff.R. #
# It is part of the R package spam, #
# --> https://CRAN.R-project.org/package=spam #
# --> https://CRAN.R-project.org/package=spam64 #
# --> https://git.math.uzh.ch/reinhard.furrer/spam #
# by Reinhard Furrer [aut, cre], Florian Gerber [aut], #
# Roman Flury [aut], Daniel Gerber [ctb], #
# Kaspar Moesinger [ctb] #
# HEADER END ################################################
rm(list = ls())
source("helper.R")
## library("testthat")
## library("spam64", lib.loc = LIB.LOC)
## library("spam", lib.loc = "../../../lib/")
context("test-diff.R")
options(spam.structurebased=FALSE) # test for equivalence!
n <- 10
x <- array(rnorm(n^2),c(n,n))
test_that("diff", {
spamtest_eq(diff(x), diff(as.spam(x)))
spamtest_eq(diff(x,d=2), diff(as.spam(x), d=2))
spamtest_eq(diff(x,d=4), diff(as.spam(x), d=4))
spamtest_eq(diff(x,2, d=2), diff(as.spam(x),2, d=2))
expect_equal(diff(x,4, d=4), diff(as.spam(x),4, d=4))
})
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