#!/usr/bin/r -t
#
# Copyright (C) 2014  Dirk Eddelbuettel
#
# This file is part of RcppArmadillo.
#
# RcppArmadillo is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
#
# RcppArmadillo is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with RcppArmadillo.  If not, see <http://www.gnu.org/licenses/>.

.setUp <- RcppArmadillo:::unit_test_setup("rng.cpp")

test.randu.seed <- function() {
    set.seed(123)
    a <- randu(10)
    set.seed(123)
    b <- randu(10)
    checkEquals(a, b, msg="randu seeding")
}
   
test.randi.seed <- function() {
    set.seed(123)
    a <- randi(10)
    set.seed(123)
    b <- randi(10)
    checkEquals(a, b, msg="randi seeding")
}
   
test.randn.seed <- function() {
    set.seed(123)
    a <- randn(10)
    set.seed(123)
    b <- randn(10)
    checkEquals(a, b, msg="randn seeding")
}
   
test.randu <- function() {
    set.seed(123)
    a <- randu(10)
    checkTrue(min(a) > 0, msg="randu min")
    checkTrue(max(a) < 1, msg="randu max")
}

test.randi <- function() {
    set.seed(123)
    a <- randi(10)
    checkTrue(min(a) > 0, msg="randi min")
    checkTrue(typeof(a) == "integer", msg="randi type")
}

test.randn <- function() {
    set.seed(123)
    a <- randn(10)
    checkTrue(min(a) > -4, msg="randn min")
    checkTrue(max(a) <  4, msg="randn max")
    checkTrue(typeof(a) == "double", msg="randi type")
}