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test_that("block_append() only writes unique lines", {
path <- withr::local_tempfile()
writeLines(block_create(), path)
block_append("---", c("x", "y"), path)
block_append("---", c("y", "x"), path)
expect_equal(block_show(path), c("x", "y"))
})
test_that("block_append() can sort, if requested", {
path <- withr::local_tempfile()
writeLines(block_create(), path)
block_append("---", c("z", "y"), path)
block_append("---", "x", path, sort = TRUE)
expect_equal(block_show(path), c("x", "y", "z"))
})
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