Mike Gerwitz

Activist for User Freedom

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/**
 * Event logger test
 *
 *  Copyright (C) 2010-2019 R-T Specialty, LLC.
 *
 *  This file is part of the Liza Data Collection Framework.
 *
 *  liza is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Affero General Public License as
 *  published by the Free Software Foundation, either version 3 of the
 *  License, or (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU Affero General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

import { StandardLogger as Sut } from '../../src/system/StandardLogger';
import { LogLevel } from '../../src/system/PsrLogger';
import { expect } from 'chai';

const sinon = require( 'sinon' );

declare interface MockConsole extends Console {
    getLevel(): string,
    getStr(): string,
}

describe( 'system.EventLogger captures and logs events', () =>
{
    it( 'debug triggers console output level: info', () =>
    {
        const con = createMockConsole();
        const env = 'test';
        const sut = new Sut( con, ts_ctr, env );

        sut.debug( 'Foo' );

        expect( con.getLevel() ).to.equal( 'info' );
    } );

    it( 'info triggers console output level: info', () =>
    {
        const con = createMockConsole();
        const env = 'test';
        const sut = new Sut( con, ts_ctr, env );

        sut.info( 'Foo' );

        expect( con.getLevel() ).to.equal( 'info' );
    } );

    it( 'notice triggers console output level: log', () =>
    {
        const con = createMockConsole();
        const env = 'test';
        const sut = new Sut( con, ts_ctr, env );

        sut.notice( 'Foo' );

        expect( con.getLevel() ).to.equal( 'log' );
    } );

    it( 'warning triggers console output level: warn', () =>
    {
        const con = createMockConsole();
        const env = 'test';
        const sut = new Sut( con, ts_ctr, env );

        sut.warning( 'Foo' );

        expect( con.getLevel() ).to.equal( 'warn' );
    } );

    it( 'error triggers console output level: error', () =>
    {
        const con = createMockConsole();
        const env = 'test';
        const sut = new Sut( con, ts_ctr, env );

        sut.error( 'Foo' );

        expect( con.getLevel() ).to.equal( 'error' );
    } );

    it( 'critical triggers console output level: error', () =>
    {
        const con = createMockConsole();
        const env = 'test';
        const sut = new Sut( con, ts_ctr, env );

        sut.critical( 'Foo' );

        expect( con.getLevel() ).to.equal( 'error' );
    } );

    it( 'alert triggers console output level: error', () =>
    {
        const con = createMockConsole();
        const env = 'test';
        const sut = new Sut( con, ts_ctr, env );

        sut.alert( 'Foo' );

        expect( con.getLevel() ).to.equal( 'error' );
    } );

    it( 'emergency triggers console output level: error', () =>
    {
        const con = createMockConsole();
        const env = 'test';
        const sut = new Sut( con, ts_ctr, env );

        sut.emergency( 'Foo' );

        expect( con.getLevel() ).to.equal( 'error' );
    } );

    it( 'log triggers corresponding log level', () =>
    {
        const con = createMockConsole();
        const env = 'test';
        const sut = new Sut( con, ts_ctr, env );

        sut.log( LogLevel.ERROR, 'Foo' );

        expect( con.getLevel() ).to.equal( 'error' );
    } );

    it( 'Context is included in structured output', () =>
    {
        const con = createMockConsole();
        const env = 'test';
        const sut = new Sut( con, ts_ctr, env );
        const context = { bar: 'baz' };
        const expected_output = {
            message:   'Foo',
            timestamp: 123123,
            service:   'quote-server',
            env:       'test',
            severity:  'NOTICE',
            context:   {
                bar: 'baz',
            },
        };

        sut.notice( 'Foo', context );

        expect( con.getStr() ).to.deep.equal( expected_output );
    } );
} );


function ts_ctr(): UnixTimestamp
{
    return <UnixTimestamp>123123;
}


function createMockConsole(): MockConsole
{
    const mock = sinon.mock( console );

    mock.lvl      = '';
    mock.str      = '';
    mock.info     = ( str: string ) => { mock.str = str; mock.lvl = 'info'; };
    mock.log      = ( str: string ) => { mock.str = str; mock.lvl = 'log'; };
    mock.warn     = ( str: string ) => { mock.str = str; mock.lvl = 'warn'; };
    mock.error    = ( str: string ) => { mock.str = str; mock.lvl = 'error'; };
    mock.getLevel = () => mock.lvl;
    mock.getStr   = () => mock.str;

    return mock;
}