jameshartig commented on code in PR #1942:
URL:
https://github.com/apache/cassandra-gocql-driver/pull/1942#discussion_r3094968730
##########
integration_test.go:
##########
@@ -977,3 +978,52 @@ func TestSliceMapMapScanCollectionTypes(t *testing.T) {
})
}
}
+
+func TestUDT_EncodeNilMap(t *testing.T) {
+ session := createSession(t)
+ defer session.Close()
+
+ err := createTable(session, `CREATE TYPE IF NOT EXISTS
gocql_test.encode_nil_map_udt (
+ field_a text,
+ field_b int
+ );`)
+ require.NoError(t, err)
+
+ err = createTable(session, `CREATE TABLE IF NOT EXISTS
gocql_test.encode_nil_map_udt_table (
+ id int PRIMARY KEY,
+ value frozen<encode_nil_map_udt>
+ );`)
+ require.NoError(t, err)
+ session.Close()
+
+ insertNilMapAndScan := func(t *testing.T, session *Session, recordID
int) map[string]interface{} {
+ t.Helper()
+ nilMap := map[string]interface{}(nil)
+ err = session.Query("INSERT INTO encode_nil_map_udt_table (id,
value) VALUES (?, ?)", recordID, nilMap).Exec()
+ require.NoError(t, err)
+ var scanned map[string]interface{}
+ err = session.Query("SELECT value FROM encode_nil_map_udt_table
WHERE id = ?", recordID).ScanContext(context.Background(), &scanned)
+ require.NoError(t, err)
+ return scanned
+ }
+
+ t.Run("encode nil map as initialized UDT with null values", func(t
*testing.T) {
+ session := createSession(t, func(config *ClusterConfig) {
+ config.Encoding.EncodeNilMapAsInitilizedUDT = true
+ config.Logger = NewLogger(LogLevelInfo)
+ })
+ defer session.Close()
+ scanned := insertNilMapAndScan(t, session, 1)
+ expected := map[string]interface{}{"field_a": "", "field_b": 0}
Review Comment:
It looks like it makes a pointer and then unmarshals into that pointer and
then dereferences it. So I think `map[string]interface{}{"field_a": "",
"field_b": 0}` is right.
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