class UpsertTest

class UpsertTest extends DatabaseTestBase {
    
    /**
     * Confirms that we can upsert (update-or-insert) records successfully.
     */
    public function testUpsert() {
        $connection = Database::getConnection();
        $num_records_before = $connection->query('SELECT COUNT(*) FROM {test_people}')
            ->fetchField();
        $upsert = $connection->upsert('test_people')
            ->key('job')
            ->fields([
            'job',
            'age',
            'name',
        ]);
        // Add a new row.
        $upsert->values([
            'job' => 'Presenter',
            'age' => 31,
            'name' => 'Tiffany',
        ]);
        // Update an existing row.
        $upsert->values([
            'job' => 'Speaker',
            // The initial age was 30.
'age' => 32,
            'name' => 'Meredith',
        ]);
        $result = $upsert->execute();
        $this->assertIsInt($result);
        $this->assertGreaterThanOrEqual(2, $result, 'The result of the upsert operation should report that at least two rows were affected.');
        $num_records_after = $connection->query('SELECT COUNT(*) FROM {test_people}')
            ->fetchField();
        $this->assertEquals($num_records_before + 1, $num_records_after, 'Rows were inserted and updated properly.');
        $person = $connection->query('SELECT * FROM {test_people} WHERE [job] = :job', [
            ':job' => 'Presenter',
        ])
            ->fetch();
        $this->assertEquals('Presenter', $person->job, 'Job set correctly.');
        $this->assertEquals(31, $person->age, 'Age set correctly.');
        $this->assertEquals('Tiffany', $person->name, 'Name set correctly.');
        $person = $connection->query('SELECT * FROM {test_people} WHERE [job] = :job', [
            ':job' => 'Speaker',
        ])
            ->fetch();
        $this->assertEquals('Speaker', $person->job, 'Job was not changed.');
        $this->assertEquals(32, $person->age, 'Age updated correctly.');
        $this->assertEquals('Meredith', $person->name, 'Name was not changed.');
    }
    
    /**
     * Confirms that we can upsert records with keywords successfully.
     */
    public function testUpsertWithKeywords() {
        $num_records_before = $this->connection
            ->query('SELECT COUNT(*) FROM {select}')
            ->fetchField();
        $upsert = $this->connection
            ->upsert('select')
            ->key('id')
            ->fields([
            'id',
            'update',
        ]);
        // Add a new row.
        $upsert->values([
            // Test a non sequence ID for better testing of the default return value.
'id' => 3,
            'update' => 'Update value 2',
        ]);
        // Update an existing row.
        $upsert->values([
            'id' => 1,
            'update' => 'Update value 1 updated',
        ]);
        $result = $upsert->execute();
        $this->assertIsInt($result);
        // The upsert returns the number of rows affected. For MySQL the return
        // value is 3 because the affected-rows value per row is 1 if the row is
        // inserted as a new row, 2 if an existing row is updated. See
        // https://dev.mysql.com/doc/c-api/8.0/en/mysql-affected-rows.html.
        $this->assertGreaterThanOrEqual(2, $result, 'The result of the upsert operation should report that at least two rows were affected.');
        $num_records_after = $this->connection
            ->query('SELECT COUNT(*) FROM {select}')
            ->fetchField();
        $this->assertEquals($num_records_before + 1, $num_records_after, 'Rows were inserted and updated properly.');
        $record = $this->connection
            ->query('SELECT * FROM {select} WHERE [id] = :id', [
            ':id' => 1,
        ])
            ->fetch();
        $this->assertEquals('Update value 1 updated', $record->update);
        $record = $this->connection
            ->query('SELECT * FROM {select} WHERE [id] = :id', [
            ':id' => 3,
        ])
            ->fetch();
        $this->assertEquals('Update value 2', $record->update);
        // An upsert should be re-usable.
        $upsert->values([
            'id' => 4,
            'update' => 'Another value',
        ]);
        $return_value = $upsert->execute();
        $this->assertSame(1, $return_value);
        $record = $this->connection
            ->query('SELECT * FROM {select} WHERE [id] = :id', [
            ':id' => 4,
        ])
            ->fetch();
        $this->assertEquals('Another value', $record->update);
    }
    
    /**
     * Upsert on a not existing table throws a DatabaseExceptionWrapper.
     */
    public function testUpsertNonExistingTable() : void {
        $this->expectException(DatabaseExceptionWrapper::class);
        $upsert = $this->connection
            ->upsert('a-table-that-does-not-exist')
            ->key('id')
            ->fields([
            'id',
            'update',
        ]);
        $upsert->values([
            'id' => 1,
            'update' => 'Update value 1 updated',
        ]);
        $upsert->execute();
    }
    
    /**
     * Tests that we can upsert a null into blob field.
     */
    public function testUpsertNullBlob() {
        $id = $this->connection
            ->insert('test_one_blob')
            ->fields([
            'blob1' => 'test',
        ])
            ->execute();
        $r = $this->connection
            ->query('SELECT * FROM {test_one_blob} WHERE [id] = :id', [
            ':id' => $id,
        ])
            ->fetchAssoc();
        $this->assertSame('test', $r['blob1']);
        $this->connection
            ->upsert('test_one_blob')
            ->key('id')
            ->fields([
            'id',
            'blob1',
        ])
            ->values([
            'id' => $id,
            'blob1' => NULL,
        ])
            ->values([
            'id' => $id + 1,
            'blob1' => NULL,
        ])
            ->execute();
        $r = $this->connection
            ->query('SELECT * FROM {test_one_blob} WHERE [id] = :id', [
            ':id' => $id,
        ])
            ->fetchAssoc();
        $this->assertNull($r['blob1']);
        $r = $this->connection
            ->query('SELECT * FROM {test_one_blob} WHERE [id] = :id', [
            ':id' => $id + 1,
        ])
            ->fetchAssoc();
        $this->assertNull($r['blob1']);
    }

}