zeroshade commented on a change in pull request #9862:
URL: https://github.com/apache/arrow/pull/9862#discussion_r606828836



##########
File path: go/arrow/internal/arrdata/ioutil.go
##########
@@ -172,6 +173,47 @@ func WriteFile(t *testing.T, f *os.File, mem 
memory.Allocator, schema *arrow.Sch
        }
 }
 
+// WriteFile writes a list of records to the given file descriptor, as an 
ARROW file.
+func WriteFileCompressed(t *testing.T, f *os.File, mem memory.Allocator, 
schema *arrow.Schema, recs []array.Record, codec flatbuf.CompressionType) {
+       t.Helper()
+
+       opts := []ipc.Option{ipc.WithSchema(schema), ipc.WithAllocator(mem)}
+       switch codec {
+       case flatbuf.CompressionTypeLZ4_FRAME:
+               opts = append(opts, ipc.WithLZ4())
+       case flatbuf.CompressionTypeZSTD:
+               opts = append(opts, ipc.WithZstd())
+       }

Review comment:
       ah fair point, this is a testing function I should just use the `t`. 
I'll fix that




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