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+<?php
+
+/**
+ * @file
+ * Tests for the Database Schema API.
+ */
+
+/**
+ * Unit tests for the Schema API.
+ */
+class SchemaTestCase extends DrupalWebTestCase {
+ /**
+ * A global counter for table and field creation.
+ */
+ var $counter;
+
+ public static function getInfo() {
+ return array(
+ 'name' => 'Schema API',
+ 'description' => 'Tests table creation and modification via the schema API.',
+ 'group' => 'Database',
+ );
+ }
+
+ /**
+ *
+ */
+ function testSchema() {
+ // Try creating a table.
+ $table_specification = array(
+ 'description' => 'Schema table description.',
+ 'fields' => array(
+ 'id' => array(
+ 'type' => 'int',
+ 'default' => NULL,
+ ),
+ 'test_field' => array(
+ 'type' => 'int',
+ 'not null' => TRUE,
+ 'description' => 'Schema column description.',
+ ),
+ ),
+ );
+ db_create_table('test_table', $table_specification);
+
+ // Assert that the table exists.
+ $this->assertTrue(db_table_exists('test_table'), 'The table exists.');
+
+ // Assert that the table comment has been set.
+ $this->checkSchemaComment($table_specification['description'], 'test_table');
+
+ // Assert that the column comment has been set.
+ $this->checkSchemaComment($table_specification['fields']['test_field']['description'], 'test_table', 'test_field');
+
+ // An insert without a value for the column 'test_table' should fail.
+ $this->assertFalse($this->tryInsert(), 'Insert without a default failed.');
+
+ // Add a default value to the column.
+ db_field_set_default('test_table', 'test_field', 0);
+ // The insert should now succeed.
+ $this->assertTrue($this->tryInsert(), 'Insert with a default succeeded.');
+
+ // Remove the default.
+ db_field_set_no_default('test_table', 'test_field');
+ // The insert should fail again.
+ $this->assertFalse($this->tryInsert(), 'Insert without a default failed.');
+
+ // Test for fake index and test for the boolean result of indexExists().
+ $index_exists = Database::getConnection()->schema()->indexExists('test_table', 'test_field');
+ $this->assertIdentical($index_exists, FALSE, 'Fake index does not exists');
+ // Add index.
+ db_add_index('test_table', 'test_field', array('test_field'));
+ // Test for created index and test for the boolean result of indexExists().
+ $index_exists = Database::getConnection()->schema()->indexExists('test_table', 'test_field');
+ $this->assertIdentical($index_exists, TRUE, 'Index created.');
+
+ // Rename the table.
+ db_rename_table('test_table', 'test_table2');
+
+ // Index should be renamed.
+ $index_exists = Database::getConnection()->schema()->indexExists('test_table2', 'test_field');
+ $this->assertTrue($index_exists, 'Index was renamed.');
+
+ // We need the default so that we can insert after the rename.
+ db_field_set_default('test_table2', 'test_field', 0);
+ $this->assertFalse($this->tryInsert(), 'Insert into the old table failed.');
+ $this->assertTrue($this->tryInsert('test_table2'), 'Insert into the new table succeeded.');
+
+ // We should have successfully inserted exactly two rows.
+ $count = db_query('SELECT COUNT(*) FROM {test_table2}')->fetchField();
+ $this->assertEqual($count, 2, 'Two fields were successfully inserted.');
+
+ // Try to drop the table.
+ db_drop_table('test_table2');
+ $this->assertFalse(db_table_exists('test_table2'), 'The dropped table does not exist.');
+
+ // Recreate the table.
+ db_create_table('test_table', $table_specification);
+ db_field_set_default('test_table', 'test_field', 0);
+ db_add_field('test_table', 'test_serial', array('type' => 'int', 'not null' => TRUE, 'default' => 0, 'description' => 'Added column description.'));
+
+ // Assert that the column comment has been set.
+ $this->checkSchemaComment('Added column description.', 'test_table', 'test_serial');
+
+ // Change the new field to a serial column.
+ db_change_field('test_table', 'test_serial', 'test_serial', array('type' => 'serial', 'not null' => TRUE, 'description' => 'Changed column description.'), array('primary key' => array('test_serial')));
+
+ // Assert that the column comment has been set.
+ $this->checkSchemaComment('Changed column description.', 'test_table', 'test_serial');
+
+ $this->assertTrue($this->tryInsert(), 'Insert with a serial succeeded.');
+ $max1 = db_query('SELECT MAX(test_serial) FROM {test_table}')->fetchField();
+ $this->assertTrue($this->tryInsert(), 'Insert with a serial succeeded.');
+ $max2 = db_query('SELECT MAX(test_serial) FROM {test_table}')->fetchField();
+ $this->assertTrue($max2 > $max1, 'The serial is monotone.');
+
+ $count = db_query('SELECT COUNT(*) FROM {test_table}')->fetchField();
+ $this->assertEqual($count, 2, 'There were two rows.');
+
+ // Use database specific data type and ensure that table is created.
+ $table_specification = array(
+ 'description' => 'Schema table description.',
+ 'fields' => array(
+ 'timestamp' => array(
+ 'mysql_type' => 'timestamp',
+ 'pgsql_type' => 'timestamp',
+ 'sqlite_type' => 'datetime',
+ 'not null' => FALSE,
+ 'default' => NULL,
+ ),
+ ),
+ );
+ try {
+ db_create_table('test_timestamp', $table_specification);
+ }
+ catch (Exception $e) {}
+ $this->assertTrue(db_table_exists('test_timestamp'), 'Table with database specific datatype was created.');
+ }
+
+ function tryInsert($table = 'test_table') {
+ try {
+ db_insert($table)
+ ->fields(array('id' => mt_rand(10, 20)))
+ ->execute();
+ return TRUE;
+ }
+ catch (Exception $e) {
+ return FALSE;
+ }
+ }
+
+ /**
+ * Checks that a table or column comment matches a given description.
+ *
+ * @param $description
+ * The asserted description.
+ * @param $table
+ * The table to test.
+ * @param $column
+ * Optional column to test.
+ */
+ function checkSchemaComment($description, $table, $column = NULL) {
+ if (method_exists(Database::getConnection()->schema(), 'getComment')) {
+ $comment = Database::getConnection()->schema()->getComment($table, $column);
+ $this->assertEqual($comment, $description, 'The comment matches the schema description.');
+ }
+ }
+
+ /**
+ * Tests creating unsigned columns and data integrity thereof.
+ */
+ function testUnsignedColumns() {
+ // First create the table with just a serial column.
+ $table_name = 'unsigned_table';
+ $table_spec = array(
+ 'fields' => array('serial_column' => array('type' => 'serial', 'unsigned' => TRUE, 'not null' => TRUE)),
+ 'primary key' => array('serial_column'),
+ );
+ $ret = array();
+ db_create_table($table_name, $table_spec);
+
+ // Now set up columns for the other types.
+ $types = array('int', 'float', 'numeric');
+ foreach ($types as $type) {
+ $column_spec = array('type' => $type, 'unsigned'=> TRUE);
+ if ($type == 'numeric') {
+ $column_spec += array('precision' => 10, 'scale' => 0);
+ }
+ $column_name = $type . '_column';
+ $table_spec['fields'][$column_name] = $column_spec;
+ db_add_field($table_name, $column_name, $column_spec);
+ }
+
+ // Finally, check each column and try to insert invalid values into them.
+ foreach ($table_spec['fields'] as $column_name => $column_spec) {
+ $this->assertTrue(db_field_exists($table_name, $column_name), format_string('Unsigned @type column was created.', array('@type' => $column_spec['type'])));
+ $this->assertFalse($this->tryUnsignedInsert($table_name, $column_name), format_string('Unsigned @type column rejected a negative value.', array('@type' => $column_spec['type'])));
+ }
+ }
+
+ /**
+ * Tries to insert a negative value into columns defined as unsigned.
+ *
+ * @param $table_name
+ * The table to insert
+ * @param $column_name
+ * The column to insert
+ * @return
+ * TRUE if the insert succeeded, FALSE otherwise
+ */
+ function tryUnsignedInsert($table_name, $column_name) {
+ try {
+ db_insert($table_name)
+ ->fields(array($column_name => -1))
+ ->execute();
+ return TRUE;
+ }
+ catch (Exception $e) {
+ return FALSE;
+ }
+ }
+
+ /**
+ * Test adding columns to an existing table.
+ */
+ function testSchemaAddField() {
+ // Test varchar types.
+ foreach (array(1, 32, 128, 256, 512) as $length) {
+ $base_field_spec = array(
+ 'type' => 'varchar',
+ 'length' => $length,
+ );
+ $variations = array(
+ array('not null' => FALSE),
+ array('not null' => FALSE, 'default' => '7'),
+ array('not null' => TRUE, 'initial' => 'd'),
+ array('not null' => TRUE, 'initial' => 'd', 'default' => '7'),
+ );
+
+ foreach ($variations as $variation) {
+ $field_spec = $variation + $base_field_spec;
+ $this->assertFieldAdditionRemoval($field_spec);
+ }
+ }
+
+ // Test int and float types.
+ foreach (array('int', 'float') as $type) {
+ foreach (array('tiny', 'small', 'medium', 'normal', 'big') as $size) {
+ $base_field_spec = array(
+ 'type' => $type,
+ 'size' => $size,
+ );
+ $variations = array(
+ array('not null' => FALSE),
+ array('not null' => FALSE, 'default' => 7),
+ array('not null' => TRUE, 'initial' => 1),
+ array('not null' => TRUE, 'initial' => 1, 'default' => 7),
+ );
+
+ foreach ($variations as $variation) {
+ $field_spec = $variation + $base_field_spec;
+ $this->assertFieldAdditionRemoval($field_spec);
+ }
+ }
+ }
+
+ // Test numeric types.
+ foreach (array(1, 5, 10, 40, 65) as $precision) {
+ foreach (array(0, 2, 10, 30) as $scale) {
+ if ($precision <= $scale) {
+ // Precision must be smaller then scale.
+ continue;
+ }
+
+ $base_field_spec = array(
+ 'type' => 'numeric',
+ 'scale' => $scale,
+ 'precision' => $precision,
+ );
+ $variations = array(
+ array('not null' => FALSE),
+ array('not null' => FALSE, 'default' => 7),
+ array('not null' => TRUE, 'initial' => 1),
+ array('not null' => TRUE, 'initial' => 1, 'default' => 7),
+ );
+
+ foreach ($variations as $variation) {
+ $field_spec = $variation + $base_field_spec;
+ $this->assertFieldAdditionRemoval($field_spec);
+ }
+ }
+ }
+ }
+
+ /**
+ * Assert that a given field can be added and removed from a table.
+ *
+ * The addition test covers both defining a field of a given specification
+ * when initially creating at table and extending an existing table.
+ *
+ * @param $field_spec
+ * The schema specification of the field.
+ */
+ protected function assertFieldAdditionRemoval($field_spec) {
+ // Try creating the field on a new table.
+ $table_name = 'test_table_' . ($this->counter++);
+ $table_spec = array(
+ 'fields' => array(
+ 'serial_column' => array('type' => 'serial', 'unsigned' => TRUE, 'not null' => TRUE),
+ 'test_field' => $field_spec,
+ ),
+ 'primary key' => array('serial_column'),
+ );
+ db_create_table($table_name, $table_spec);
+ $this->pass(format_string('Table %table created.', array('%table' => $table_name)));
+
+ // Check the characteristics of the field.
+ $this->assertFieldCharacteristics($table_name, 'test_field', $field_spec);
+
+ // Clean-up.
+ db_drop_table($table_name);
+
+ // Try adding a field to an existing table.
+ $table_name = 'test_table_' . ($this->counter++);
+ $table_spec = array(
+ 'fields' => array(
+ 'serial_column' => array('type' => 'serial', 'unsigned' => TRUE, 'not null' => TRUE),
+ ),
+ 'primary key' => array('serial_column'),
+ );
+ db_create_table($table_name, $table_spec);
+ $this->pass(format_string('Table %table created.', array('%table' => $table_name)));
+
+ // Insert some rows to the table to test the handling of initial values.
+ for ($i = 0; $i < 3; $i++) {
+ db_insert($table_name)
+ ->useDefaults(array('serial_column'))
+ ->execute();
+ }
+
+ db_add_field($table_name, 'test_field', $field_spec);
+ $this->pass(format_string('Column %column created.', array('%column' => 'test_field')));
+
+ // Check the characteristics of the field.
+ $this->assertFieldCharacteristics($table_name, 'test_field', $field_spec);
+
+ // Clean-up.
+ db_drop_field($table_name, 'test_field');
+ db_drop_table($table_name);
+ }
+
+ /**
+ * Assert that a newly added field has the correct characteristics.
+ */
+ protected function assertFieldCharacteristics($table_name, $field_name, $field_spec) {
+ // Check that the initial value has been registered.
+ if (isset($field_spec['initial'])) {
+ // There should be no row with a value different then $field_spec['initial'].
+ $count = db_select($table_name)
+ ->fields($table_name, array('serial_column'))
+ ->condition($field_name, $field_spec['initial'], '<>')
+ ->countQuery()
+ ->execute()
+ ->fetchField();
+ $this->assertEqual($count, 0, 'Initial values filled out.');
+ }
+
+ // Check that the default value has been registered.
+ if (isset($field_spec['default'])) {
+ // Try inserting a row, and check the resulting value of the new column.
+ $id = db_insert($table_name)
+ ->useDefaults(array('serial_column'))
+ ->execute();
+ $field_value = db_select($table_name)
+ ->fields($table_name, array($field_name))
+ ->condition('serial_column', $id)
+ ->execute()
+ ->fetchField();
+ $this->assertEqual($field_value, $field_spec['default'], 'Default value registered.');
+ }
+
+ db_drop_field($table_name, $field_name);
+ }
+}