function ViewsModuleTest::testViewsFetchData

Tests views_fetch_data().

File

tests/views_module.test, line 171

Class

ViewsModuleTest

Tests basic functions from the Views module.

Code

public function testViewsFetchData() {
    // Make sure we start with a empty cache.
    $this->resetStaticViewsDataCache();
    cache_clear_all('*', 'cache_views', TRUE);
    variable_set('views_test_views_data_count', 0);
    // Request info about an existing table.
    $this->assertTrue(views_fetch_data('views_test'), 'Data about existing table returned');
    // This should have triggered a views data rebuild, and written a cache
    // entry for all tables and the requested table but no other tables.
    $this->assertEqual(variable_get('views_test_views_data_count', 0), 1, 'Views data rebuilt once');
    $this->assertTrue(cache_get('views_data:en', 'cache_views'), 'Cache for all tables written.');
    $this->assertTrue(cache_get('views_data:views_test:en', 'cache_views'), 'Cache for requested table written.');
    $this->assertFalse(cache_get('views_data:views_test_previous:en', 'cache_views'), 'No Cache written for not requested table.');
    $this->assertTrue(drupal_static('_views_fetch_data_fully_loaded'), 'Views data is fully loaded');
    $this->resetStaticViewsDataCache();
    // Request the same table again.
    $this->assertTrue(views_fetch_data('views_test'), 'Data about existing table returned');
    $this->assertEqual(variable_get('views_test_views_data_count', 0), 1, 'Views data rebuilt once');
    $this->assertFalse(drupal_static('_views_fetch_data_fully_loaded'), 'Views data is not fully loaded');
    $this->resetStaticViewsDataCache();
    // Request a missing table, this should load the full cache from cache but
    // not rebuilt.
    $this->assertFalse(views_fetch_data('views_test_missing'), 'No data about missing table returned');
    $this->assertEqual(variable_get('views_test_views_data_count', 0), 1, 'Views data rebuilt once');
    $this->assertTrue(drupal_static('_views_fetch_data_fully_loaded'), 'Views data is fully loaded');
    $this->resetStaticViewsDataCache();
    // Request the same empty table again, this should load only that (empty)
    // cache for that table.
    $this->assertFalse(views_fetch_data('views_test_missing'), 'No data about missing table returned');
    $this->assertEqual(variable_get('views_test_views_data_count', 0), 1, 'Views data rebuilt once');
    $this->assertFalse(drupal_static('_views_fetch_data_fully_loaded'), 'Views data is not fully loaded');
    // Test if the cache consistency is ensured. There was an issue where
    // calling _views_fetch_data() first with a table would prevent the function
    // from properly rebuilt a missing the general cache entry.
    // See https://www.drupal.org/node/2475669 for details.
    // Make sure we start with a empty cache.
    $this->resetStaticViewsDataCache();
    cache_clear_all('*', 'cache_views', TRUE);
    // Prime the static cache of _views_fetch_data() by calling it with a table
    // first.
    views_fetch_data('views_test');
    // Now remove the general cache.
    cache_clear_all('views_data:en', 'cache_views');
    // Reset the static cache to see if fetches from the persistent cache
    // properly rebuild the static cache.
    $this->resetStaticViewsDataCache();
    // Prime the static cache of _views_fetch_data() by calling it with a table
    // first.
    views_fetch_data('views_test');
    // Fetch the general cache, which was deleted, an see if it is rebuild
    // properly.
    views_fetch_data();
    $this->assertTrue(cache_get('views_data:en', 'cache_views'), 'Cache for all tables was properly rebuild.');
}