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#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
context("functions in utils.R")
# JavaSparkContext handle
sc <- sparkR.init()
test_that("convertJListToRList() gives back (deserializes) the original JLists
of strings and integers", {
# It's hard to manually create a Java List using rJava, since it does not
# support generics well. Instead, we rely on collect() returning a
# JList.
nums <- as.list(1:10)
rdd <- parallelize(sc, nums, 1L)
jList <- callJMethod(rdd@jrdd, "collect")
rList <- convertJListToRList(jList, flatten = TRUE)
expect_equal(rList, nums)
strs <- as.list("hello", "spark")
rdd <- parallelize(sc, strs, 2L)
jList <- callJMethod(rdd@jrdd, "collect")
rList <- convertJListToRList(jList, flatten = TRUE)
expect_equal(rList, strs)
})
test_that("serializeToBytes on RDD", {
# File content
mockFile <- c("Spark is pretty.", "Spark is awesome.")
fileName <- tempfile(pattern="spark-test", fileext=".tmp")
writeLines(mockFile, fileName)
text.rdd <- textFile(sc, fileName)
expect_equal(getSerializedMode(text.rdd), "string")
ser.rdd <- serializeToBytes(text.rdd)
expect_equal(collect(ser.rdd), as.list(mockFile))
expect_equal(getSerializedMode(ser.rdd), "byte")
unlink(fileName)
})
test_that("cleanClosure on R functions", {
y <- c(1, 2, 3)
g <- function(x) { x + 1 }
f <- function(x) { g(x) + y }
newF <- cleanClosure(f)
env <- environment(newF)
expect_equal(length(ls(env)), 2) # y, g
actual <- get("y", envir = env, inherits = FALSE)
expect_equal(actual, y)
actual <- get("g", envir = env, inherits = FALSE)
expect_equal(actual, g)
# Test for nested enclosures and package variables.
env2 <- new.env()
funcEnv <- new.env(parent = env2)
f <- function(x) { log(g(x) + y) }
environment(f) <- funcEnv # enclosing relationship: f -> funcEnv -> env2 -> .GlobalEnv
newF <- cleanClosure(f)
env <- environment(newF)
expect_equal(length(ls(env)), 2) # "min" should not be included
actual <- get("y", envir = env, inherits = FALSE)
expect_equal(actual, y)
actual <- get("g", envir = env, inherits = FALSE)
expect_equal(actual, g)
base <- c(1, 2, 3)
l <- list(field = matrix(1))
field <- matrix(2)
defUse <- 3
g <- function(x) { x + y }
f <- function(x) {
defUse <- base::as.integer(x) + 1 # Test for access operators `::`.
lapply(x, g) + 1 # Test for capturing function call "g"'s closure as a argument of lapply.
l$field[1,1] <- 3 # Test for access operators `$`.
res <- defUse + l$field[1,] # Test for def-use chain of "defUse", and "" symbol.
f(res) # Test for recursive calls.
}
newF <- cleanClosure(f)
env <- environment(newF)
# TODO(shivaram): length(ls(env)) is 4 here for some reason and `lapply` is included in `env`.
# Disabling this test till we debug this.
#
# expect_equal(length(ls(env)), 3) # Only "g", "l" and "f". No "base", "field" or "defUse".
expect_true("g" %in% ls(env))
expect_true("l" %in% ls(env))
expect_true("f" %in% ls(env))
expect_equal(get("l", envir = env, inherits = FALSE), l)
# "y" should be in the environemnt of g.
newG <- get("g", envir = env, inherits = FALSE)
env <- environment(newG)
expect_equal(length(ls(env)), 1)
actual <- get("y", envir = env, inherits = FALSE)
expect_equal(actual, y)
# Test for function (and variable) definitions.
f <- function(x) {
g <- function(y) { y * 2 }
g(x)
}
newF <- cleanClosure(f)
env <- environment(newF)
expect_equal(length(ls(env)), 0) # "y" and "g" should not be included.
# Test for overriding variables in base namespace (Issue: SparkR-196).
nums <- as.list(1:10)
rdd <- parallelize(sc, nums, 2L)
t <- 4 # Override base::t in .GlobalEnv.
f <- function(x) { x > t }
newF <- cleanClosure(f)
env <- environment(newF)
expect_equal(ls(env), "t")
expect_equal(get("t", envir = env, inherits = FALSE), t)
actual <- collect(lapply(rdd, f))
expected <- as.list(c(rep(FALSE, 4), rep(TRUE, 6)))
expect_equal(actual, expected)
# Test for broadcast variables.
a <- matrix(nrow=10, ncol=10, data=rnorm(100))
aBroadcast <- broadcast(sc, a)
normMultiply <- function(x) { norm(aBroadcast$value) * x }
newnormMultiply <- SparkR:::cleanClosure(normMultiply)
env <- environment(newnormMultiply)
expect_equal(ls(env), "aBroadcast")
expect_equal(get("aBroadcast", envir = env, inherits = FALSE), aBroadcast)
})
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