如何调试Mockery\Exception\InvalidCountException？

Question

在我的单元测试文件中有这一行：

$this->object->drupal->shouldReceive('drupalSetMessage')->once();

但我得到的错误如下：

$ ./tests/phpunit -c tests/phpunit.xml

...

There was 1 error:

1) SessionTest::testFoo
Mockery\Exception\InvalidCountException: Method drupalSetMessage(<Any Arguments>) from Mockery_1_Drupal_Util_Drupal should be called
 exactly 1 times but called 0 times.

tests/vendor/mockery/mockery/library/Mockery/CountValidator/Exact.php:38
tests/vendor/mockery/mockery/library/Mockery/Expectation.php:309
tests/vendor/mockery/mockery/library/Mockery/ExpectationDirector.php:119
tests/vendor/mockery/mockery/library/Mockery/Container.php:301
tests/vendor/mockery/mockery/library/Mockery/Container.php:286
tests/vendor/mockery/mockery/library/Mockery.php:165

如何调试才能看到在测试过程中使用了哪些参数调用了方法？

Answer 1

我发现的变通方法是在Mock.php中修改_call()/_callStatic。

例如，我编辑了文件：vendor/mockery/mockery/library/Mockery/Mock.php。

然后我添加了这一行：

if ($method == 'drupalSetMessage') var_dump($method . " " . var_export($args, TRUE));

所以函数看起来像这样：

public function __call($method, array $args)
{
    if ($method == 'drupalSetMessage') var_dump($method . " " . var_export($args, TRUE));
    return $this->_mockery_handleMethodCall($method, $args);
}

public static function __callStatic($method, array $args)
{
    if ($method == 'someStaticMethodName') var_dump($method, $args);
    return self::_mockery_handleStaticMethodCall($method, $args);
}

下面是分散注意力的日志记录行(它可以处理circular references)：

syslog(LOG_DEBUG, sprintf("%s: %s(%s)", __METHOD__, $method, json_encode($args, TRUE)));

然后可以在syslog中找到输出。在macOS上，可以通过以下命令显示日志流：

log stream --level debug --predicate 'processImagePath contains "php"

要打印发生函数的列表(回溯)，下面这一行可能很有用：

printf("%s(%s) at %s\n", $method, json_encode($args, TRUE), implode(', ', array_column(debug_backtrace(), 'function')));