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<?php
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// This file is part of Moodle - https://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
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namespace mlbackend_python;
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/**
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 * Unit tests for the {@link \mlbackend_python\processor} class.
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 *
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 * @package   mlbackend_python
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 * @category  test
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 * @copyright 2019 David Mudrák <david@moodle.com>
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 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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 * @covers \mlbackend_python\processor
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 */
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final class processor_test extends \advanced_testcase {
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    /**
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     * Test implementation of the {@link \mlbackend_python\processor::check_pip_package_version()} method.
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     *
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     * @dataProvider check_pip_package_versions
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     * @param string $actual A sample of the actual package version
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     * @param string $required A sample of the required package version
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     * @param int $result Expected value returned by the tested method
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     */
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    public function test_check_pip_package_version($actual, $required, $result): void {
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        $this->assertSame($result, \mlbackend_python\processor::check_pip_package_version($actual, $required));
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    }
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    /**
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     * Check that the {@link \mlbackend_python\processor::check_pip_package_version()} can be called with single argument.
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     */
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    public function test_check_pip_package_version_default(): void {
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        $this->assertSame(-1, \mlbackend_python\processor::check_pip_package_version('0.0.1'));
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        $this->assertSame(
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            0,
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            \mlbackend_python\processor::check_pip_package_version(\mlbackend_python\processor::REQUIRED_PIP_PACKAGE_VERSION),
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        );
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    }
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    /**
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     * Provides data samples for the {@link self::test_check_pip_package_version()}.
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     *
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     * @return array
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     */
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    public static function check_pip_package_versions(): array {
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        return [
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            // Exact match.
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            [
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                '0.0.5',
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                '0.0.5',
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                0,
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            ],
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            [
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                '1.0.0',
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                '1.0.0',
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                0,
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            ],
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            // Actual version higher than required, yet still API compatible.
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            [
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                '1.0.3',
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                '1.0.1',
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                0,
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            ],
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            [
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                '2.1.3',
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                '2.0.0',
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                0,
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            ],
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            [
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                '1.1.5',
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                '1.1',
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                0,
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            ],
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            [
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                '2.0.3',
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                '2',
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                0,
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            ],
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            // Actual version not high enough to meet the requirements.
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            [
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                '0.0.5',
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                '1.0.0',
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                -1,
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            ],
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            [
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                '0.37.0',
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                '1.0.0',
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                -1,
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            ],
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            [
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                '0.0.5',
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                '0.37.0',
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                -1,
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            ],
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            [
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                '2.0.0',
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                '2.0.2',
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                -1,
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            ],
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            [
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                '2.7.0',
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                '3.0',
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                -1,
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            ],
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            [
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                '2.8.9-beta1',
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                '3.0',
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                -1,
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            ],
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            [
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                '1.1.0-rc1',
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                '1.1.0',
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                -1,
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            ],
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            // Actual version too high and no longer API compatible.
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            [
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                '2.0.0',
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                '1.0.0',
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                1,
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            ],
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            [
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                '3.1.5',
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                '2.0',
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                1,
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            ],
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            [
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                '3.0.0',
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                '1.0',
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                1,
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            ],
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            [
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                '2.0.0',
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                '0.0.5',
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                1,
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            ],
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            [
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                '3.0.2',
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                '0.37.0',
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                1,
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            ],
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            // Zero major version requirement is fulfilled with 1.x API (0.x are not considered stable APIs).
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            [
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                '1.0.0',
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                '0.0.5',
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                0,
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            ],
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            [
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                '1.8.6',
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                '0.37.0',
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                0,
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            ],
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            // Empty version is never good enough.
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            [
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                '',
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                '1.0.0',
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                -1,
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            ],
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            [
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                '0.0.0',
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                '0.37.0',
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                -1,
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            ],
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        ];
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    }
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}