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test-indexing-basic.R
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test-indexing-basic.R
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library(pizzarr)
MockArray <- R6::R6Class("MockArray",
public = list(
shape = NULL,
chunks = NULL,
initialize = function(shape, chunks) {
self$shape <- shape
self$chunks <- chunks
},
get_shape = function() {
return(self$shape)
},
get_chunks = function() {
return(self$chunks)
}
)
)
test_that("basic indexer for array that spans multiple chunks", {
z <- MockArray$new(shape = c(10, 10), chunks = c(5, 5))
expect_equal(z$get_shape(), c(10, 10))
expect_equal(z$get_chunks(), c(5, 5))
bi <- BasicIndexer$new(list(zb_slice(0, 11), zb_slice(0, 11)), z)
expect_equal(as.numeric(bi$shape), c(10, 10))
expect_equal(length(bi$dim_indexers), 2)
expect_equal("SliceDimIndexer" %in% class(bi$dim_indexers[[1]]), TRUE)
expect_equal("SliceDimIndexer" %in% class(bi$dim_indexers[[2]]), TRUE)
sdi1 <- bi$dim_indexers[[1]]
expect_equal(sdi1$start, 0)
expect_equal(sdi1$stop, 10)
expect_equal(sdi1$step, 1)
expect_equal(sdi1$dim_len, 10)
expect_equal(sdi1$dim_chunk_len, 5)
expect_equal(sdi1$num_items, 10)
expect_equal(sdi1$num_chunks, 2)
sdi2 <- bi$dim_indexers[[2]]
expect_equal(sdi2$start, 0)
expect_equal(sdi2$stop, 10)
expect_equal(sdi2$step, 1)
expect_equal(sdi2$dim_len, 10)
expect_equal(sdi2$dim_chunk_len, 5)
expect_equal(sdi2$num_items, 10)
expect_equal(sdi2$num_chunks, 2)
})
test_that("basic indexer for array that spans multiple chunks where shape is not a multiple", {
z <- MockArray$new(shape = c(10, 10), chunks = c(3, 3))
expect_equal(z$get_shape(), c(10, 10))
expect_equal(z$get_chunks(), c(3, 3))
bi <- BasicIndexer$new(list(zb_slice(0, 11), zb_slice(0, 11)), z)
expect_equal(as.numeric(bi$shape), c(10, 10))
expect_equal(length(bi$dim_indexers), 2)
expect_equal("SliceDimIndexer" %in% class(bi$dim_indexers[[1]]), TRUE)
expect_equal("SliceDimIndexer" %in% class(bi$dim_indexers[[2]]), TRUE)
sdi1 <- bi$dim_indexers[[1]]
expect_equal(sdi1$start, 0)
expect_equal(sdi1$stop, 10)
expect_equal(sdi1$step, 1)
expect_equal(sdi1$dim_len, 10)
expect_equal(sdi1$dim_chunk_len, 3)
expect_equal(sdi1$num_items, 10)
expect_equal(sdi1$num_chunks, 4)
sdi2 <- bi$dim_indexers[[2]]
expect_equal(sdi2$start, 0)
expect_equal(sdi2$stop, 10)
expect_equal(sdi2$step, 1)
expect_equal(sdi2$dim_len, 10)
expect_equal(sdi2$dim_chunk_len, 3)
expect_equal(sdi2$num_items, 10)
expect_equal(sdi2$num_chunks, 4)
})
test_that("basic indexer for array that spans multiple chunks where shape is not a multiple with offsets", {
z <- MockArray$new(shape = c(10, 10), chunks = c(3, 3))
expect_equal(z$get_shape(), c(10, 10))
expect_equal(z$get_chunks(), c(3, 3))
bi <- BasicIndexer$new(list(zb_slice(5, 10), zb_slice(5, 10)), z)
expect_equal(as.numeric(bi$shape), c(5, 5))
expect_equal(length(bi$dim_indexers), 2)
expect_equal("SliceDimIndexer" %in% class(bi$dim_indexers[[1]]), TRUE)
expect_equal("SliceDimIndexer" %in% class(bi$dim_indexers[[2]]), TRUE)
sdi1 <- bi$dim_indexers[[1]]
expect_equal(sdi1$start, 5)
expect_equal(sdi1$stop, 10)
expect_equal(sdi1$step, 1)
expect_equal(sdi1$dim_len, 10)
expect_equal(sdi1$dim_chunk_len, 3)
expect_equal(sdi1$num_items, 5)
expect_equal(sdi1$num_chunks, 4)
sdi2 <- bi$dim_indexers[[2]]
expect_equal(sdi2$start, 5)
expect_equal(sdi2$stop, 10)
expect_equal(sdi2$step, 1)
expect_equal(sdi2$dim_len, 10)
expect_equal(sdi2$dim_chunk_len, 3)
expect_equal(sdi2$num_items, 5)
expect_equal(sdi2$num_chunks, 4)
})
test_that("selection functionality", {
a <- zarr_volcano()$get_item("volcano")
sub_a <- a$get_item(list(slice(1, 10), "..."))
expect_equal(sub_a$shape, c(10, a$get_shape()[2]))
sub_a <- a$get_item(list(":", slice(1, 10)))
expect_equal(sub_a$shape, c(a$get_shape()[1], 10))
sub_a <- a$get_item(list(1, "..."))
expect_equal(sub_a$shape, c(1, a$get_shape()[2]))
sub_a <- a$get_item(list("...", slice(1, 10)))
expect_equal(sub_a$shape, c(a$get_shape()[1], 10))
})