lava-oushudb-dt-sql-parser/test/parser/flinksql/visitor.test.ts
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2023-10-13 11:16:36 +08:00

33 lines
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TypeScript

import FlinkSQL from '../../../src/parser/flinksql';
import { FlinkSqlParserVisitor } from '../../../src/lib/flinksql/FlinkSqlParserVisitor';
import { AbstractParseTreeVisitor } from 'antlr4ts/tree';
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);
});
test('Visitor visitTableName', () => {
let result = '';
class MyVisitor
extends AbstractParseTreeVisitor<any>
implements FlinkSqlParserVisitor<any>
{
protected defaultResult() {
return result;
}
visitTableExpression = (ctx): void => {
result = ctx.text.toLowerCase();
};
}
const visitor: any = new MyVisitor();
visitor.visit(parserTree);
expect(result).toBe(expectTableName);
});
});