dragosmg commented on a change in pull request #11790:
URL: https://github.com/apache/arrow/pull/11790#discussion_r759094997
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File path: r/tests/testthat/test-data-type.R
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@@ -395,6 +395,18 @@ test_that("decimal type and validation", {
expect_error(decimal(4, NA), '"scale" must be an integer')
expect_r6_class(decimal(4, 2), "Decimal128Type")
+
+ expect_error(decimal128())
+ expect_error(decimal128("four"), '"precision" must be an integer')
+ expect_error(decimal128(4))
Review comment:
Row 400 should be checked as that comes from the R code. I'd be in
favour of keeping all of them.
Rows 399 & 401: same as for the other arg to `decimal128()`, this is a
generic R error: `Error in decimal128(4) : argument "scale" is missing, with no
default`. I merely duplicated the tests we had for `decimal()`. Given it's the
rather generic R error, I'd say assertion on content might not be needed.
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