unit tests foralready resolved issue, closes #3334 (#3748)

Rdatatable · Aug 13, 2019 · 2922591 · 2922591
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diff --git a/NEWS.md b/NEWS.md
@@ -224,6 +224,8 @@
 
 25. Slight fix to the logic for auto-naming the `by` clause for using a custom function like `evaluate` to now be named `evaluate` instead of the name of the first symbolic argument, [#3758](https://github.com/Rdatatable/data.table/issues/3758).
 
+26. Column binding of zero column `data.table` will now work as expected, [#3334](https://github.com/Rdatatable/data.table/issues/3334). Thanks to @kzenstratus for the report.
+
 #### NOTES
 
 1. `rbindlist`'s `use.names="check"` now emits its message for automatic column names (`"V[0-9]+"`) too, [#3484](https://github.com/Rdatatable/data.table/pull/3484). See news item 5 of v1.12.2 below.

diff --git a/inst/tests/tests.Rraw b/inst/tests/tests.Rraw
@@ -15646,6 +15646,9 @@ test(2074.39, fread('a,b\n"Inf,2\n'), data.table(a='"Inf', b=2L), warning="Found
 test(2074.40, fread('a\n1', na.strings=character(), verbose=TRUE), output='No NAstrings provided')
 test(2074.41, fread('a\n1', na.strings='9', verbose=TRUE), output='One or more of the NAstrings looks like a number')
 
+# cbind 0 cols, #3334
+test(2075, data.table(data.table(a=1), data.table()), data.table(data.table(a=1)))
+
 
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 #  Add new tests above this line  #