snuyanzin commented on a change in pull request #18287:
URL: https://github.com/apache/flink/pull/18287#discussion_r780465918
##########
File path:
flink-table/flink-table-planner/src/test/java/org/apache/flink/table/planner/functions/CastFunctionITCase.java
##########
@@ -1142,14 +1146,27 @@ protected Configuration configuration() {
public static List<TestSpec> constructedTypes() {
return Arrays.asList(
- // https://issues.apache.org/jira/browse/FLINK-17321
- // MULTISET
- // MAP
+ CastTestSpecBuilder.testCastTo(MAP(STRING(), STRING()))
+ .fromCase(MAP(FLOAT(), DOUBLE()), null, null)
+ .fromCase(
+ MAP(INT(), INT()),
+ Collections.singletonMap(1, 2),
+ Collections.singletonMap("1", "2"))
Review comment:
I didn't get, should it fail?
```sql
SELECT CAST(MAP['a', row(1)] AS MAP<STRING, STRING>);
```
I thought it should return something like that
```
{a=(1)}
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