xuefuz commented on a change in pull request #8212: [FLINK-11519][table] Add 
function related catalog APIs
URL: https://github.com/apache/flink/pull/8212#discussion_r278720766
 
 

 ##########
 File path: 
flink-table/flink-table-api-java/src/test/java/org/apache/flink/table/catalog/GenericInMemoryCatalogTest.java
 ##########
 @@ -562,6 +568,158 @@ public void testRenameView() throws Exception {
                catalog.dropTable(viewPath2, false);
        }
 
+       // ------ functions ------
+
+       @Test
+       public void testCreateFunction() throws Exception {
+               catalog.createDatabase(db1, createDb(), false);
+
+               assertFalse(catalog.functionExists(path1));
+
+               catalog.createFunction(path1, createFunction(), false);
+
+               assertTrue(catalog.functionExists(path1));
+
+               catalog.dropFunction(path1, false);
+               catalog.dropDatabase(db1, false);
+       }
+
+       @Test
+       public void testCreateFunction_DatabaseNotExistException() throws 
Exception {
+               assertFalse(catalog.databaseExists(db1));
+
+               exception.expect(DatabaseNotExistException.class);
+               exception.expectMessage("Database db1 does not exist in 
Catalog");
 
 Review comment:
   Did you mean "C" in "Catalog"? Your suggestion might be valid. However, this 
isn't introduced in this PR and it's consistent with other exceptions. If they 
are doomed to be changed, I think it's better to do so in a separate JIRA. 
Thoughts?

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