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

33 lines
1.1 KiB
TypeScript

import { AbstractParseTreeVisitor } from 'antlr4ts/tree/AbstractParseTreeVisitor';
import { SparkSqlParserVisitor } from '../../../src/lib/spark/SparkSqlParserVisitor';
import SparkSQL from '../../../src/parser/spark';
describe('Spark SQL Visitor Tests', () => {
const expectTableName = 'user1';
const sql = `select id,name,sex from ${expectTableName};`;
const parser = new SparkSQL();
const parserTree = parser.parse(sql, (error) => {
console.log('Parse error:', error);
});
test('Visitor visitRelationPrimary', () => {
class MyVisitor
extends AbstractParseTreeVisitor<any>
implements SparkSqlParserVisitor<any>
{
result: string = '';
protected defaultResult() {
return this.result;
}
visitRelationPrimary = (ctx): void => {
this.result = ctx.text.toLowerCase();
};
}
const visitor = new MyVisitor();
visitor.visit(parserTree);
expect(visitor.result).toBe(expectTableName);
});
});