dragosmg commented on a change in pull request #12486:
URL: https://github.com/apache/arrow/pull/12486#discussion_r812424612
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File path: r/tests/testthat/test-duckdb.R
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@@ -15,6 +15,19 @@
# specific language governing permissions and limitations
# under the License.
+test_that("meaningful error message when duckdb is not installed", {
+ new_lib <- tempfile()
+ dir.create(new_lib)
+ withr::with_libpaths(new_lib, {
+ ds <- InMemoryDataset$create(example_data)
+ expect_error(
+ to_duckdb(ds),
+ "Please install the `duckdb` package."
+ )
+ })
+ unlink(new_lib, recursive = TRUE)
Review comment:
I think the question might be how to make sure there's only one `dir` on
`.libPaths()` for the purpose of running that test. I believe {rent} might be
doing just that.
https://github.com/rstudio/renv/blob/86edb40cf638c017f26c7f9be155bbbbaf01b1b0/R/libpaths.R#L12-L13
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