<?php
/**
 * Copyright 2017 OpenCensus Authors
 *
 * 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.
 */

namespace OpenCensus\Tests\Unit\Trace\Exporter;

use OpenCensus\Trace\Exporter\FileExporter;
use OpenCensus\Trace\Span;
use PHPUnit\Framework\TestCase;

/**
 * @group trace
 */
class FileExporterTest extends TestCase
{
    private $tracer;
    private $filename;

    protected function setUp(): void
    {
        $this->filename = tempnam(sys_get_temp_dir(), 'traces');
    }

    protected function tearDown(): void
    {
        @unlink($this->filename);
        parent::tearDown();
    }

    public function testLogsTrace()
    {
        $span = new Span([
            'name' => 'span',
            'startTime' => microtime(true),
            'endTime' => microtime(true) + 10
        ]);

        $exporter = new FileExporter($this->filename);
        $this->assertTrue($exporter->export([$span->spanData()]));
        $this->assertGreaterThan(0, strlen(@file_get_contents($this->filename)));
    }
}
