devozerov commented on a change in pull request #2371:
URL: https://github.com/apache/calcite/pull/2371#discussion_r593792954



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File path: server/src/test/java/org/apache/calcite/test/ServerTest.java
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@@ -532,4 +533,26 @@ static Connection connect() throws SQLException {
       }
     }
   }
+
+  @Test public void testDropWithFullyQualifiedNameWhenSchemaDoesntExist() 
throws Exception {
+    try (Connection c = connect();
+         Statement s = c.createStatement()) {
+      checkDropWithFullyQualifiedNameWhenSchemaDoesntExist(s, "schema", 
"Schema");
+      checkDropWithFullyQualifiedNameWhenSchemaDoesntExist(s, "table", 
"Table");
+      checkDropWithFullyQualifiedNameWhenSchemaDoesntExist(s, "materialized 
view", "Table");
+      checkDropWithFullyQualifiedNameWhenSchemaDoesntExist(s, "view", "View");
+      checkDropWithFullyQualifiedNameWhenSchemaDoesntExist(s, "type", "Type");
+      checkDropWithFullyQualifiedNameWhenSchemaDoesntExist(s, "function", 
"Function");
+    }
+  }
+
+  private void checkDropWithFullyQualifiedNameWhenSchemaDoesntExist(
+      Statement statement, String objectType, String objectTypeInErrorMessage) 
throws Exception {
+    SQLException e = assertThrows(SQLException.class, () ->
+        statement.execute("drop " + objectType + " s.o"),
+        "expected error because the object doesn't exist");

Review comment:
       Method name already reflects the purpose - it checks behaviour of the 
DROP command when it is executed with the qualified object name and the parent 
container doesn’t exist. 




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