// Copyright 2015 Google LLC

//

// Licensed under the Apache License, Version 2.0 (the "License");

// you may not use this file except in compliance with the License.

// You may obtain a copy of the License at

//

// http://www.apache.org/licenses/LICENSE-2.0

//

// Unless required by applicable law or agreed to in writing, software

// distributed under the License is distributed on an "AS IS" BASIS,

// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

// See the License for the specific language governing permissions and

// limitations under the License.

import * as assert from 'assert';

import {describe, it, before, after, afterEach} from 'mocha';

import * as shimmer from 'shimmer';

import * as logger from '../src/logger';

import {TestLogger} from './logger';

import * as traceTestModule from './trace';

describe('should respect environment variables', () => {

let logLevel: string | null = null;

class CaptureLogLevelTestLogger extends TestLogger {

}

before(() => {

process.env.GCLOUD_TRACE_LOGLEVEL = '4';

// Wrap logger constructor so that the log level (string) is saved

// in logLevel

shimmer.wrap(logger, 'Logger', () => CaptureLogLevelTestLogger);

});

after(() => {

delete process.env.GCLOUD_TRACE_LOGLEVEL;

shimmer.unwrap(logger, 'Logger');

});

afterEach(() => {

logLevel = null;

});

it('should respect GCLOUD_TRACE_LOGLEVEL', () => {

traceTestModule.start();

assert.strictEqual(logLevel, logger.LEVELS[4]);

});

it('should prefer env to config', () => {

traceTestModule.start({logLevel: 2});

assert.strictEqual(logLevel, logger.LEVELS[4]);

});

it('should fix out of bounds log level', () => {

process.env.GCLOUD_TRACE_LOGLEVEL = '-5';

traceTestModule.start();

assert.strictEqual(logLevel, logger.LEVELS[0]);

process.env.GCLOUD_TRACE_LOGLEVEL = '300';

traceTestModule.start();

assert.strictEqual(logLevel, logger.LEVELS[4]);

});

});