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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle 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 General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * Tests for step.
 *
 * @package    tool_usertours
 * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

defined('MOODLE_INTERNAL') || die();

global $CFG;
require_once($CFG->libdir . '/formslib.php');

/**
 * Tests for step.
 *
 * @package    tool_usertours
 * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class step_testcase extends advanced_testcase {

/**
     * @var moodle_database
     */
    protected $db;

/**
     * Setup to store the DB reference.
     */
    public function setUp() {
        global $DB;

$this->db = $DB;
    }

/**
     * Tear down to restore the original DB reference.
     */
    public function tearDown() {
        global $DB;

$DB = $this->db;
    }

/**
     * Helper to mock the database.
     *
     * @return moodle_database
     */
    public function mock_database() {
        global $DB;

$DB = $this->getMockBuilder('moodle_database')
            ->getMock()
            ;

return $DB;
    }

/**
     * Data provider for the dirty value tester.
     *
     * @return array
     */
    public function dirty_value_provider() {
        return [
                'tourid' => [
                        'tourid',
                        [1],
                    ],
                'title' => [
                        'title',
                        ['Lorem'],
                    ],
                'content' => [
                        'content',
                        ['Lorem'],
                    ],
                'targettype' => [
                        'targettype',
                        ['Lorem'],
                    ],
                'targetvalue' => [
                        'targetvalue',
                        ['Lorem'],
                    ],
                'sortorder' => [
                        'sortorder',
                        [1],
                    ],
                'config' => [
                        'config',
                        ['key', 'value'],
                    ],
            ];
    }

/**
     * Test the fetch function.
     */
    public function test_fetch() {
        $step = $this->getMockBuilder(\tool_usertours\step::class)
            ->setMethods(['reload_from_record'])
            ->getMock()
            ;

$idretval = rand(1, 100);
        $DB = $this->mock_database();
        $DB->method('get_record')
            ->willReturn($idretval)
            ;

$retval = rand(1, 100);
        $step->expects($this->once())
            ->method('reload_from_record')
            ->with($this->equalTo($idretval))
            ->wilLReturn($retval)
            ;

$rc = new \ReflectionClass(\tool_usertours\step::class);
        $rcm = $rc->getMethod('fetch');
        $rcm->setAccessible(true);

$id = rand(1, 100);
        $this->assertEquals($retval, $rcm->invoke($step, 'fetch', $id));
    }

/**
     * Test that setters mark things as dirty.
     *
     * @dataProvider dirty_value_provider
     * @param   string  $name       The key to update
     * @param   string  $value      The value to set
     */
    public function test_dirty_values($name, $value) {
        $step = new \tool_usertours\step();
        $method = 'set_' . $name;
        call_user_func_array([$step, $method], $value);

$rc = new \ReflectionClass(\tool_usertours\step::class);
        $rcp = $rc->getProperty('dirty');
        $rcp->setAccessible(true);

$this->assertTrue($rcp->getValue($step));
    }

/**
     * Provider for is_first_step.
     *
     * @return array
     */
    public function step_sortorder_provider() {
        return [
                [0, 5, true, false],
                [1, 5, false, false],
                [4, 5, false, true],
            ];
    }

/**
     * Test is_first_step.
     *
     * @dataProvider step_sortorder_provider
     * @param   int     $sortorder      The sortorder to check
     * @param   int     $count          Unused in this function
     * @param   bool    $isfirst        Whether this is the first step
     * @param   bool    $islast         Whether this is the last step
     */
    public function test_is_first_step($sortorder, $count, $isfirst, $islast) {
        $step = $this->getMockBuilder(\tool_usertours\step::class)
            ->setMethods(['get_sortorder'])
            ->getMock();

$step->expects($this->once())
            ->method('get_sortorder')
            ->willReturn($sortorder)
            ;

$this->assertEquals($isfirst, $step->is_first_step());
    }

/**
     * Test is_last_step.
     *
     * @dataProvider step_sortorder_provider
     * @param   int     $sortorder      The sortorder to check
     * @param   int     $count          Total number of steps for this test
     * @param   bool    $isfirst        Whether this is the first step
     * @param   bool    $islast         Whether this is the last step
     */
    public function test_is_last_step($sortorder, $count, $isfirst, $islast) {
        $step = $this->getMockBuilder(\tool_usertours\step::class)
            ->setMethods(['get_sortorder', 'get_tour'])
            ->getMock();

$tour = $this->getMockBuilder(\tool_usertours\tour::class)
            ->setMethods(['count_steps'])
            ->getMock();

$step->expects($this->once())
            ->method('get_tour')
            ->willReturn($tour)
            ;

$tour->expects($this->once())
            ->method('count_steps')
            ->willReturn($count)
            ;

$step->expects($this->once())
            ->method('get_sortorder')
            ->willReturn($sortorder)
            ;

$this->assertEquals($islast, $step->is_last_step());
    }

/**
     * Test get_config with no keys provided.
     */
    public function test_get_config_no_keys() {
        $step = new \tool_usertours\step();

$rc = new \ReflectionClass(\tool_usertours\step::class);
        $rcp = $rc->getProperty('config');
        $rcp->setAccessible(true);

$allvalues = (object) [
                'some' => 'value',
                'another' => 42,
                'key' => [
                    'somethingelse',
                ],
            ];

$rcp->setValue($step, $allvalues);

$this->assertEquals($allvalues, $step->get_config());
    }

/**
     * Data provider for get_config.
     *
     * @return array
     */
    public function get_config_provider() {
        $allvalues = (object) [
                'some' => 'value',
                'another' => 42,
                'key' => [
                    'somethingelse',
                ],
            ];

$tourconfig = rand(1, 100);
        $forcedconfig = rand(1, 100);

return [
                'No initial config' => [
                        null,
                        null,
                        null,
                        $tourconfig,
                        false,
                        $forcedconfig,
                        (object) [],
                    ],
                'All values' => [
                        $allvalues,
                        null,
                        null,
                        $tourconfig,
                        false,
                        $forcedconfig,
                        $allvalues,
                    ],
                'Valid string value' => [
                        $allvalues,
                        'some',
                        null,
                        $tourconfig,
                        false,
                        $forcedconfig,
                        'value',
                    ],
                'Valid array value' => [
                        $allvalues,
                        'key',
                        null,
                        $tourconfig,
                        false,
                        $forcedconfig,
                        ['somethingelse'],
                    ],
                'Invalid value' => [
                        $allvalues,
                        'notavalue',
                        null,
                        $tourconfig,
                        false,
                        $forcedconfig,
                        $tourconfig,
                    ],
                'Configuration value' => [
                        $allvalues,
                        'placement',
                        null,
                        $tourconfig,
                        false,
                        $forcedconfig,
                        $tourconfig,
                    ],
                'Invalid value with default' => [
                        $allvalues,
                        'notavalue',
                        'somedefault',
                        $tourconfig,
                        false,
                        $forcedconfig,
                        'somedefault',
                    ],
                'Value forced at target' => [
                        $allvalues,
                        'somevalue',
                        'somedefault',
                        $tourconfig,
                        true,
                        $forcedconfig,
                        $forcedconfig,
                    ],
            ];
    }

/**
     * Test get_config with valid keys provided.
     *
     * @dataProvider get_config_provider
     * @param   object  $values     The config values
     * @param   string  $key        The key
     * @param   mixed   $default    The default value
     * @param   mixed   $tourconfig The tour config
     * @param   bool    $isforced   Whether the setting is forced
     * @param   mixed   $forcedvalue    The example value
     * @param   mixed   $expected   The expected value
     */
    public function test_get_config_valid_keys($values, $key, $default, $tourconfig, $isforced, $forcedvalue, $expected) {
        $step = $this->getMockBuilder(\tool_usertours\step::class)
            ->setMethods(['get_target', 'get_targettype', 'get_tour'])
            ->getMock();

$rc = new \ReflectionClass(\tool_usertours\step::class);
        $rcp = $rc->getProperty('config');
        $rcp->setAccessible(true);
        $rcp->setValue($step, $values);

$target = $this->getMockBuilder(\tool_usertours\local\target\base::class)
            ->disableOriginalConstructor()
            ->getMock()
            ;

$target->expects($this->any())
            ->method('is_setting_forced')
            ->willReturn($isforced)
            ;

$target->expects($this->any())
            ->method('get_forced_setting_value')
            ->with($this->equalTo($key))
            ->willReturn($forcedvalue)
            ;

$step->expects($this->any())
            ->method('get_targettype')
            ->willReturn('type')
            ;

$step->expects($this->any())
            ->method('get_target')
            ->willReturn($target)
            ;

$tour = $this->getMockBuilder(\tool_usertours\tour::class)
            ->getMock()
            ;

$tour->expects($this->any())
            ->method('get_config')
            ->willReturn($tourconfig)
            ;

$step->expects($this->any())
            ->method('get_tour')
            ->willReturn($tour)
            ;

$this->assertEquals($expected, $step->get_config($key, $default));
    }

/**
     * Data provider for set_config.
     */
    public function set_config_provider() {
        $allvalues = (object) [
                'some' => 'value',
                'another' => 42,
                'key' => [
                    'somethingelse',
                ],
            ];

$randvalue = rand(1, 100);

$provider = [];

$newvalues = $allvalues;
        $newvalues->some = 'unset';
        $provider['Unset an existing value'] = [
                $allvalues,
                'some',
                null,
                $newvalues,
            ];

$newvalues = $allvalues;
        $newvalues->some = $randvalue;
        $provider['Set an existing value'] = [
                $allvalues,
                'some',
                $randvalue,
                $newvalues,
            ];

$provider['Set a new value'] = [
                $allvalues,
                'newkey',
                $randvalue,
                (object) array_merge((array) $allvalues, ['newkey' => $randvalue]),
            ];

return $provider;
    }

/**
     * Test that set_config works in the anticipated fashion.
     *
     * @dataProvider set_config_provider
     * @param   mixed   $initialvalues  The inital value to set
     * @param   string  $key        The key to test
     * @param   mixed   $newvalue   The new value to set
     * @param   mixed   $expected   The expected value
     */
    public function test_set_config($initialvalues, $key, $newvalue, $expected) {
        $step = new \tool_usertours\step();

$rc = new \ReflectionClass(\tool_usertours\step::class);
        $rcp = $rc->getProperty('config');
        $rcp->setAccessible(true);
        $rcp->setValue($step, $initialvalues);

$target = $this->getMockBuilder(\tool_usertours\local\target\base::class)
            ->disableOriginalConstructor()
            ->getMock()
            ;

$target->expects($this->any())
            ->method('is_setting_forced')
            ->willReturn(false)
            ;

$step->set_config($key, $newvalue);

$this->assertEquals($expected, $rcp->getValue($step));
    }

/**
     * Ensure that non-dirty tours are not persisted.
     */
    public function test_persist_non_dirty() {
        $step = $this->getMockBuilder(\tool_usertours\step::class)
            ->setMethods([
                    'to_record',
                    'reload',
                ])
            ->getMock()
            ;

$step->expects($this->never())
            ->method('to_record')
            ;

$step->expects($this->never())
            ->method('reload')
            ;

$this->assertSame($step, $step->persist());
    }

/**
     * Ensure that new dirty steps are persisted.
     */
    public function test_persist_dirty_new() {
        // Mock the database.
        $DB = $this->mock_database();
        $DB->expects($this->once())
            ->method('insert_record')
            ->willReturn(42)
            ;

// Mock the tour.
        $step = $this->getMockBuilder(\tool_usertours\step::class)
            ->setMethods([
                    'to_record',
                    'calculate_sortorder',
                    'reload',
                ])
            ->getMock()
            ;

$step->expects($this->once())
            ->method('to_record')
            ->willReturn((object)['id' => 42]);
            ;

$step->expects($this->once())
            ->method('calculate_sortorder')
            ;

$step->expects($this->once())
            ->method('reload')
            ;

$rc = new \ReflectionClass(\tool_usertours\step::class);
        $rcp = $rc->getProperty('dirty');
        $rcp->setAccessible(true);
        $rcp->setValue($step, true);

$tour = $this->createMock(\tool_usertours\tour::class);
        $rcp = $rc->getProperty('tour');
        $rcp->setAccessible(true);
        $rcp->setValue($step, $tour);

$this->assertSame($step, $step->persist());
    }

/**
     * Ensure that new non-dirty, forced steps are persisted.
     */
    public function test_persist_force_new() {
        global $DB;

// Mock the database.
        $DB = $this->mock_database();
        $DB->expects($this->once())
            ->method('insert_record')
            ->willReturn(42)
            ;

$step->expects($this->once())
            ->method('to_record')
            ->willReturn((object)['id' => 42]);
            ;

$step->expects($this->once())
            ->method('calculate_sortorder')
            ;

$step->expects($this->once())
            ->method('reload')
            ;

$tour = $this->createMock(\tool_usertours\tour::class);
        $rc = new \ReflectionClass(\tool_usertours\step::class);
        $rcp = $rc->getProperty('tour');
        $rcp->setAccessible(true);
        $rcp->setValue($step, $tour);

$this->assertSame($step, $step->persist(true));
    }

/**
     * Ensure that existing dirty steps are persisted.
     */
    public function test_persist_dirty_existing() {
        // Mock the database.
        $DB = $this->mock_database();
        $DB->expects($this->once())
            ->method('update_record')
            ;

$step->expects($this->once())
            ->method('to_record')
            ->willReturn((object)['id' => 42]);
            ;

$step->expects($this->never())
            ->method('calculate_sortorder')
            ;

$step->expects($this->once())
            ->method('reload')
            ;

$rc = new \ReflectionClass(\tool_usertours\step::class);
        $rcp = $rc->getProperty('id');
        $rcp->setAccessible(true);
        $rcp->setValue($step, 42);

$rcp = $rc->getProperty('dirty');
        $rcp->setAccessible(true);
        $rcp->setValue($step, true);

$tour = $this->createMock(\tool_usertours\tour::class);
        $rcp = $rc->getProperty('tour');
        $rcp->setAccessible(true);
        $rcp->setValue($step, $tour);

$this->assertSame($step, $step->persist());
    }

/**
     * Ensure that existing non-dirty, forced steps are persisted.
     */
    public function test_persist_force_existing() {
        global $DB;

// Mock the database.
        $DB = $this->mock_database();
        $DB->expects($this->once())
            ->method('update_record')
            ;

$step->expects($this->once())
            ->method('to_record')
            ->willReturn((object)['id' => 42]);
            ;

$step->expects($this->never())
            ->method('calculate_sortorder')
            ;

$step->expects($this->once())
            ->method('reload')
            ;

$rc = new \ReflectionClass(\tool_usertours\step::class);
        $rcp = $rc->getProperty('id');
        $rcp->setAccessible(true);
        $rcp->setValue($step, 42);

$tour = $this->createMock(\tool_usertours\tour::class);
        $rcp = $rc->getProperty('tour');
        $rcp->setAccessible(true);
        $rcp->setValue($step, $tour);

$this->assertSame($step, $step->persist(true));
    }

/**
     * Check that a tour which has never been persisted is removed correctly.
     */
    public function test_remove_non_persisted() {
        $step = $this->getMockBuilder(\tool_usertours\step::class)
            ->setMethods(null)
            ->getMock()
            ;

// Mock the database.
        $DB = $this->mock_database();
        $DB->expects($this->never())
            ->method('delete_records')
            ;

$this->assertNull($step->remove());
    }

/**
     * Check that a tour which has been persisted is removed correctly.
     */
    public function test_remove_persisted() {
        $id = rand(1, 100);

$tour = $this->getMockBuilder(\tool_usertours\tour::class)
            ->setMethods([
                    'reset_step_sortorder',
                ])
            ->getMock()
            ;

$tour->expects($this->once())
            ->method('reset_step_sortorder')
            ;

$step = $this->getMockBuilder(\tool_usertours\step::class)
            ->setMethods([
                    'get_tour',
                ])
            ->getMock()
            ;

$step->expects($this->once())
            ->method('get_tour')
            ->willReturn($tour)
            ;

// Mock the database.
        $DB = $this->mock_database();
        $DB->expects($this->once())
            ->method('delete_records')
            ->with($this->equalTo('tool_usertours_steps'), $this->equalTo(['id' => $id]))
            ;

$rc = new \ReflectionClass(\tool_usertours\step::class);
        $rcp = $rc->getProperty('id');
        $rcp->setAccessible(true);
        $rcp->setValue($step, $id);

$this->assertEquals($id, $step->get_id());
        $this->assertNull($step->remove());
    }

/**
     * Data provider for the get_ tests.
     *
     * @return array
     */
    public function getter_provider() {
        return [
                'id' => [
                        'id',
                        rand(1, 100),
                    ],
                'tourid' => [
                        'tourid',
                        rand(1, 100),
                    ],
                'title' => [
                        'title',
                        'Lorem',
                    ],
                'content' => [
                        'content',
                        'Lorem',
                    ],
                'targettype' => [
                        'targettype',
                        'Lorem',
                    ],
                'targetvalue' => [
                        'targetvalue',
                        'Lorem',
                    ],
                'sortorder' => [
                        'sortorder',
                        rand(1, 100),
                    ],
            ];
    }

/**
     * Test that getters return the configured value.
     *
     * @dataProvider getter_provider
     * @param   string  $key        The key to test
     * @param   mixed   $value      The expected value
     */
    public function test_getters($key, $value) {
        $step = new \tool_usertours\step();

$rc = new \ReflectionClass(\tool_usertours\step::class);

$rcp = $rc->getProperty($key);
        $rcp->setAccessible(true);
        $rcp->setValue($step, $value);

$getter = 'get_' . $key;

$this->assertEquals($value, $step->$getter());
    }

/**
     * Data Provider for get_string_from_input.
     *
     * @return array
     */
    public function get_string_from_input_provider() {
        return [
            'Text'  => [
                'example',
                'example',
            ],
            'Text which looks like a langstring' => [
                'example,fakecomponent',
                'example,fakecomponent',
            ],
            'Text which is a langstring' => [
                'administration,core',
                'Administration',
            ],
            'Text which is a langstring but uses "moodle" instead of "core"' => [
                'administration,moodle',
                'Administration',
            ],
            'Text which is a langstring, but with extra whitespace' => [
                '  administration,moodle  ',
                'Administration',
            ],
            'Looks like a langstring, but has incorrect space around comma' => [
                'administration , moodle',
                'administration , moodle',
            ],
        ];
    }

/**
     * Ensure that the get_string_from_input function returns langstring strings correctly.
     *
     * @dataProvider get_string_from_input_provider
     * @param   string  $string     The string to test
     * @param   string  $expected   The expected result
     */
    public function test_get_string_from_input($string, $expected) {
        $this->assertEquals($expected, \tool_usertours\step::get_string_from_input($string));
    }
}