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<?php
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// This file is part of Moodle - http://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 core;
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/**
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* Unit tests for partial() in moodlelib.php.
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*
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* @package core
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* @category test
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* @copyright 2024 Andrew Lyons <andrew@nicols.co.uk>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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* @covers ::partial
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*/
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final class moodlelib_partial_test extends \advanced_testcase {
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/**
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* Test that arguments to partial can be passed as anticipated.
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*
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* @param callable $callable The callable to partially apply.
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* @param array $initialargs The initial arguments to pass to the callable.
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* @param array $calledargs The arguments to pass to the partially applied callable.
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* @param mixed $expected The expected return value.
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* @dataProvider partial_args_provider
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*/
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public function test_partial_args(
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callable $callable,
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array $initialargs,
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array $calledargs,
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mixed $expected,
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): void {
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$this->assertEquals($expected, partial($callable, ...$initialargs)(...$calledargs));
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}
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public function test_partial_args_intance_methods(): void {
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// Using named args on initial args only - instance method.
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$this->assertEquals(
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'foo/bar/baz/bum',
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partial(
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[$this, 'example_instance_method'],
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...['foo' => 'foo']
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)(...['bar', 'baz', 'bum']),
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);
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// Using named args on called args only - instance method.
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$this->assertEquals(
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'foo/bar/baz/bum',
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partial(
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[$this, 'example_instance_method'],
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...['foo' => 'foo']
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)(...['bar' => 'bar', 'baz' => 'baz', 'bum' => 'bum']),
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);
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}
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/**
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* An example static method as part of the testcase.
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*
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* @param string $foo The first argument.
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* @param string $bar The second argument.
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* @param string $baz The third argument.
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* @param string $bum The fourth argument.
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*/
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public static function example_static_method(
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string $foo,
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string $bar,
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string $baz,
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string $bum
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): string {
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return implode('/', [$foo, $bar, $baz, $bum]);
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}
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/**
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* An example method as part of the testcase.
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*
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* @param string $foo The first argument.
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* @param string $bar The second argument.
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* @param string $baz The third argument.
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* @param string $bum The fourth argument.
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*/
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public function example_instance_method(
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string $foo,
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string $bar,
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string $baz,
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string $bum
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): string {
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return implode('/', [$foo, $bar, $baz, $bum]);
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}
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/**
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* Data provider for test_partial_args.
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*
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* @return array
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*/
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public static function partial_args_provider(): array {
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return [
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'Using positional args' => [
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'str_contains',
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['foobar'],
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['foo'],
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true,
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],
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'Using positional args swapped' => [
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'str_contains',
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['foo'],
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['foobar'],
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false,
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],
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'Using named args' => [
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'str_contains',
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['needle' => 'foo'],
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['haystack' => 'foobar'],
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true,
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],
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'Using named args on callable args only' => [
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'str_contains',
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['foobar'],
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['needle' => 'foo'],
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true,
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],
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'Using named args on initial args only - static method' => [
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[self::class, 'example_static_method'],
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['foo' => 'foo'],
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['bar', 'baz', 'bum'],
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'foo/bar/baz/bum',
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],
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'Using named args on called args only - static method' => [
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[self::class, 'example_static_method'],
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['foo'],
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['bar' => 'bar', 'baz' => 'baz', 'bum' => 'bum'],
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'foo/bar/baz/bum',
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],
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];
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}
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}
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