lava-oushudb-dt-sql-parser/test/parser/flinksql/visitor.test.ts
2021-01-05 17:41:21 +08:00

28 lines
862 B
TypeScript

import { FlinkSQL, FlinkSqlParserVisitor } from '../../../src';
describe('Flink SQL Visitor Tests', () => {
const expectTableName = 'user1';
const sql = `select id,name,sex from ${expectTableName};`;
const parser = new FlinkSQL();
const parserTree = parser.parse(sql, (error) => {
console.log('Parse error:', error);
});
// console.log('Parser tree string:', parser.toString(parserTree));
test('Visitor visitTableName', () => {
let result = '';
class MyVisitor extends FlinkSqlParserVisitor {
visitTableExpression(ctx): void {
result = ctx.getText().toLowerCase();
super.visitTableExpression(ctx);
}
}
const visitor: any = new MyVisitor();
visitor.visit(parserTree);
expect(result).toBe(expectTableName);
});
});