@mysql/xdevapi/test/unit/DevAPI/TableFiltering.js

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

/*
 * Copyright (c) 2019, 2022, Oracle and/or its affiliates.
 *
 * This program is free software; you can redistribute it and/or modify
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 * published by the Free Software Foundation.
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'use strict';

/* eslint-env node, mocha */

const dataModel = require('../../../lib/Protocol/Stubs/mysqlx_crud_pb').DataModel.TABLE;
const expect = require('chai').expect;
const td = require('testdouble');

// subject under test needs to be reloaded with test doubles
let TableFiltering = require('../../../lib/DevAPI/TableFiltering');

describe('TableFiltering', () => {
    let Preparing, forceRestart;

    beforeEach('replace dependencies with test doubles', () => {
        Preparing = td.replace('../../../lib/DevAPI/Preparing');
        forceRestart = td.function();

        td.when(Preparing()).thenReturn({ forceRestart });
        // reload module with the replacements
        TableFiltering = require('../../../lib/DevAPI/TableFiltering');
    });

    afterEach('restore original dependencies', () => {
        td.reset();
    });

    context('where()', () => {
        let Expr;

        beforeEach('replace dependencies with test doubles', () => {
            Expr = td.replace('../../../lib/DevAPI/Expr');
            // reload module with the replacements
            TableFiltering = require('../../../lib/DevAPI/TableFiltering');
        });

        it('sets the statement filtering criteria using an X DevAPI expression for the given input', () => {
            const constraints = {};
            const criteria = 'foo';
            const forceRestart = td.function();
            const getValue = td.function();
            const searchConditionStr = 'bar';

            td.when(Expr({ dataModel, value: searchConditionStr })).thenReturn({ getValue });
            td.when(getValue()).thenReturn(criteria);

            TableFiltering({ constraints, preparable: { forceRestart } }).where(searchConditionStr);

            // If it is a prepared statement, it needs to be prepared again
            // because the boundaries have changed.
            expect(td.explain(forceRestart).callCount).to.equal(1);

            expect(constraints).to.deep.equal({ criteria });
        });
    });
});