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

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

/*
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 *
 * 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 ProjectedSearchExprStr = require('../../../lib/DevAPI/ProjectedSearchExprStr');

describe('ProjectedSearchExprStr informal type', () => {
    let Expr, ExprParser, parse;

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

        td.when(ExprParser({ mode: dataModel, type: ExprParser.Type.PROJECTED_SEARCH_EXPR })).thenReturn({ parse });

        // reload module with the replacements
        ProjectedSearchExprStr = require('../../../lib/DevAPI/ProjectedSearchExprStr');
    });

    context('getValue()', () => {
        it('returns a parsed version of a projection expression string', () => {
            const expected = 'foo';
            const projectedSearchExpr = 'bar';
            const getExpressionString = () => projectedSearchExpr;

            td.when(Expr({ dataModel, value: projectedSearchExpr })).thenReturn({ getExpressionString });
            td.when(parse(projectedSearchExpr)).thenReturn(expected);

            expect(ProjectedSearchExprStr(projectedSearchExpr).getValue()).to.deep.equal(expected);
        });
    });
});