@mysql/xdevapi/test/unit/ExprParser/expr.js

MySQL Connector/Node.js - A Node.js driver for MySQL using the X Protocol and X DevAPI.

/*
 * Copyright (c) 2022, Oracle and/or its affiliates.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License, version 2.0, as
 * published by the Free Software Foundation.
 *
 * This program is also distributed with certain software (including
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 * as designated in a particular file or component or in included license
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 * which is part of MySQL Connector/Node.js, is also subject to the
 * Universal FOSS Exception, version 1.0, a copy of which can be found at
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 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License, version 2.0, for more details.
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 */

'use strict';

/* eslint-env node, mocha */

const Parser = require('../../../lib/ExprParser');
const expect = require('chai').expect;

const assertIgnoredWhitespaces = (expr) => {
    // try up to to 10 whitespaces
    const whitespaces = ' '.repeat(Math.floor(Math.random() * 10) + 1);
    return expect(() => Parser({ type: Parser.Type.EXPR }).parse(`${whitespaces}${expr}${whitespaces}`)).to.not.throw();
};

describe('ExprParser', () => {
    context('expr', () => {
        it('ignores any leading or trailing whitespace in an intervalExpr', () => {
            return assertIgnoredWhitespaces('CURTIME() + INTERVAL 2 HOUR');
        });

        it('ignores any leading or trailing whitespace in a mulDivExpr', () => {
            return assertIgnoredWhitespaces('2 * 4');
        });

        it('ignores any leading or trailing whitespace in a addSubExpr', () => {
            return assertIgnoredWhitespaces('1 + 1');
        });

        it('ignores any leading or trailing whitespace in a shiftExpr', () => {
            return assertIgnoredWhitespaces('2 >> 1');
        });

        it('ignores any leading or trailing whitespace in a bitExpr', () => {
            return assertIgnoredWhitespaces('1 ^ 1');
        });

        it('ignores any leading or trailing whitespace in a shiftExpr', () => {
            return assertIgnoredWhitespaces('2 >> 1');
        });

        it('ignores any leading or trailing whitespace in a compExpr', () => {
            return assertIgnoredWhitespaces('foo = :v');
        });

        it('ignores any leading or trailing whitespace in a shiftExpr', () => {
            return assertIgnoredWhitespaces('2 >> 1');
        });

        it('ignores any leading or trailing whitespace in an ilriExpr', () => {
            return assertIgnoredWhitespaces('TRUE IS NOT FALSE');
        });

        it('ignores any leading or trailing whitespace in an andExpr', () => {
            return assertIgnoredWhitespaces('foo = "bar" AND baz = "qux"');
        });

        it('ignores any leading or trailing whitespace in an orExpr', () => {
            return assertIgnoredWhitespaces('foo = "bar" OR baz = "qux"');
        });

        it('fails to parse an expression containing "not" identifiers alongside operators with the same optional prefix', () => {
            const parser = Parser({ type: Parser.Type.EXPR });

            expect(() => parser.parse('not in (1, 2, 3)')).to.throw();
            expect(() => parser.parse('not not in (1, 2, 3)'));
            expect(() => parser.parse("not like '%foo'")).to.throw();
            expect(() => parser.parse("not not like '%foo'")).to.throw();
            expect(() => parser.parse('not in [1, 2, 3]')).to.throw();
            expect(() => parser.parse('not not in [1, 2, 3]'));
            expect(() => parser.parse("not like '%foo'")).to.throw();
            return expect(() => parser.parse("not not like '%foo'")).to.throw();
        });
    });
});