Asserts that a string is a valid JSON string.
@since Method available since Release 3.7.20
string $filename:
string $message:
public static function assertJson($expectedJson, $message = '') {
if (!is_string($expectedJson)) {
throw PHPUnit_Util_InvalidArgumentHelper::factory(1, 'string');
}
self::assertThat($expectedJson, self::isJson(), $message);
}