update test

Author: jennifersp

testing/go/functions_test.go

@@ -2069,6 +2069,10 @@ func TestSelectFromFunctions(t *testing.T) {
 					Query:    `SELECT * FROM array_to_string(ARRAY[37.89, 1.2], '_');`,
 					Expected: []sql.Row{{"37.89_1.2"}},
 				},
+				{
+					Query:    `SELECT * FROM format_type('text'::regtype, 4);`,
+					Expected: []sql.Row{{"text(4)"}},
+				},
 				{
 					Query:    `SELECT * from format_type(874938247, 20);`,
 					Expected: []sql.Row{{"???"}},