library(stream)
library("testthat")
setwd(tempdir())
############################################################################
context("write_stream")
stream <- DSD_Gaussians(k = 3, d = 5)
write_stream(stream, file = "data.txt", n = 10, header = TRUE, info = TRUE)
l <- readLines("data.txt")
expect_equal(length(l), 10L + 1L)
dsd <- DSD_ReadStream("data.txt", header = TRUE)
reset_stream(dsd)
p <- get_points(dsd, n = -1)
expect_equal(dim(p), dim(read.csv(text = l)))
close_stream(dsd)
file.remove("data.txt")
# n = -1
write_stream(DSD_Memory(stream, 5), file = "data.txt", n = -1, header = TRUE, info = TRUE)
l <- readLines("data.txt")
expect_equal(length(l), 5L + 1L)
file.remove("data.txt")
# n = 0
write_stream(stream, file = "data.txt", n = 0, header = TRUE, info = TRUE)
l <- readLines("data.txt")
expect_equal(length(l), 1L)
file.remove("data.txt")
############################################################################
context("DST_WriteStream")
stream <- DSD_Gaussians(k = 3, d = 5)
writer <- DST_WriteStream("data.txt")
writer
update(writer, stream, n = 0)
l <- readLines("data.txt")
expect_equal(length(l), 0L)
update(writer, stream, n = 5)
l <- readLines("data.txt")
expect_equal(length(l), 5L)
expect_error(DST_WriteStream("data.txt", header = TRUE))
w2 <- DST_WriteStream("data.txt", append = TRUE)
update(w2, stream, n = 10)
l <- readLines("data.txt")
expect_equal(length(l), 15L)
## cleanup
close_stream(writer)
close_stream(w2)
file.remove("data.txt")
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