Test adding and removing indexes while data is present.
function testFieldUpdateIndexesWithData() {
// Create a decimal field.
$field_name = 'testfield';
$field = array(
'field_name' => $field_name,
'type' => 'text',
);
$field = field_create_field($field);
$instance = array(
'field_name' => $field_name,
'entity_type' => 'test_entity',
'bundle' => 'test_bundle',
);
$instance = field_create_instance($instance);
$tables = array(
_field_sql_storage_tablename($field),
_field_sql_storage_revision_tablename($field),
);
// Verify the indexes we will create do not exist yet.
foreach ($tables as $table) {
$this
->assertFalse(Database::getConnection()
->schema()
->indexExists($table, 'value'), t("No index named value exists in {$table}"));
$this
->assertFalse(Database::getConnection()
->schema()
->indexExists($table, 'value_format'), t("No index named value_format exists in {$table}"));
}
// Add data so the table cannot be dropped.
$entity = field_test_create_entity(1, 1, $instance['bundle']);
$entity->{$field_name}[LANGUAGE_NOT_SPECIFIED][0]['value'] = 'field data';
$entity
->save();
// Add an index
$field = array(
'field_name' => $field_name,
'indexes' => array(
'value' => array(
array(
'value',
255,
),
),
),
);
field_update_field($field);
foreach ($tables as $table) {
$this
->assertTrue(Database::getConnection()
->schema()
->indexExists($table, "{$field_name}_value"), t("Index on value created in {$table}"));
}
// Add a different index, removing the existing custom one.
$field = array(
'field_name' => $field_name,
'indexes' => array(
'value_format' => array(
array(
'value',
127,
),
array(
'format',
127,
),
),
),
);
field_update_field($field);
foreach ($tables as $table) {
$this
->assertTrue(Database::getConnection()
->schema()
->indexExists($table, "{$field_name}_value_format"), t("Index on value_format created in {$table}"));
$this
->assertFalse(Database::getConnection()
->schema()
->indexExists($table, "{$field_name}_value"), t("Index on value removed in {$table}"));
}
// Verify that the tables were not dropped.
$entity = field_test_create_entity(1, 1, $instance['bundle']);
field_attach_load('test_entity', array(
1 => $entity,
));
$this
->assertEqual($entity->{$field_name}[LANGUAGE_NOT_SPECIFIED][0]['value'], 'field data', t("Index changes performed without dropping the tables"));
}