测试异常PHPUnit [英] Testing exception PHPUnit
问题描述
因此，我在研究PHPUnit，并希望对尝试测试Exception时PHPUnit生成的输出有一些了解.我对为什么考试不及格感到困惑.这是我的测试:
So I playing around with PHPUnit and would like to get some insight to the output that PHPUnit generates when I try to test for an Exception. I am confused as to why I am getting a failed test. Here is my test:
class ConfigTest extends PHPUnit_Framework_Testcase
{
public function testTrueIfJobGivenExists()
{
$conf = Config::getInstance('test1.php', new Database());
$setup = $conf->getConfig();
$this->assertTrue($setup);
}
/**
* @expectedException Exception
*/
public function testExceptionIfJobGivenNotExists()
{
$conf = Config::getInstance('test.php', new Database());
$setup = $conf->getConfig();
}
}
在这里，我不是在嘲笑Database类(我还没有学习如何做)，但是基本上，代码会查找并输入一个名为test.php的工作，并为此拉出config col.如果作业不存在，它将引发新的异常.这是我的输出:
In here I am not mocking the Database class (I have not learned how to do that yet) but basically the code looks for and entry for a job called test.php and pulls the config col for that. If the job does not exists it throws a new Exception. Here is my output:
PHPUnit 4.1.0 by Sebastian Bergmann.
.F
Time: 26 ms, Memory: 3.50Mb
There was 1 failure:
1) ConfigTest::testExceptionIfJobGivenNotExists
Failed asserting that exception of type "Exception" is thrown.
FAILURES!
Tests: 2, Assertions: 2, Failures: 1.
在我看来，测试失败了，但是查看有关测试异常的PHPUnit文档，输出看起来很相似.我的测试正常吗?
Here to me seems that the test is failing but looking at the PHPUnit documentation about testing exception the output looks similar. Is my test working?
编辑:新测试失败
使用Mockery我创建了如下测试:
Using Mockery I created my test like:
class ConfigTest extends PHPUnit_Framework_Testcase
{
public function tearDown()
{
Mockery::close();
}
public function testTrueIfConfigForGivenJobExists()
{
$dbJSON = array( array(
'jobConfig' => '{
"config": {
"aquisition": {
"type": "xx",
"customerKey": "xxxxx",
"login":"xxxx",
"password":"xxxxx",
"host":"xxxxxx",
"account":"",
"email":""
}
}
}'
) );
$database = Mockery::mock('Database');
$database->shouldReceive('select->where->runQuery->fetch')->andReturn($dbJSON);
$conf = Config::getInstance('getLoadsPE.php', $database);
$setup = $conf->getConfig();
$this->assertTrue($setup);
}
/**
* @expectedException Exception
*/
public function testExceptionIfJobGivenNotExists()
{
$database = Mockery::mock('Database');
$database->shouldReceive('select->where->runQuery->fetch')->andReturn(null);
$conf = Config::getInstance('getLoadsPE.php', $database);
$setup = $conf->getConfig();
$this->assertTrue($setup);
}
}
我明白了
PHPUnit 4.1.0 by Sebastian Bergmann.
.F
Time: 39 ms, Memory: 4.75Mb
There was 1 failure:
1) ConfigTest::testExceptionIfJobGivenNotExists
Failed asserting that exception of type "Exception" is thrown.
FAILURES!
Tests: 2, Assertions: 3, Failures: 1
因此，我不知道第三个断言的来源.我也不明白为什么我要通过失败测试.如果我评论第一个测试，则第二个通过.有任何想法吗?
With this I dont know where the 3rd assertion is coming from. Also I dont get why Im getting the Fail test. If I comment the first test then the second passes. Any thoughts anyone?
仅供参考
这是getConfig()的样子:
public function getConfig()
{
if ($this->flag) {
// Config has already been set
return true;
}
$data = self::$database->select('configs', ['jobConfig'])
->where('jobName', self::$jobName)
->runQuery()
->fetch();
if (empty($data)) {
throw new Exception("Config Exception: No config available for " . self::$jobName, 1);
}
if (count($data) > 1) {
throw new Exception("Config Exception: More than one config for same job!!!", 1);
}
$arr = json_decode($data[0]['jobConfig'], true);
// maybe threre is a better way of doing this
if (array_key_exists('aquisition', $arr['config'])) {
$this->aquisition = $arr['config']['aquisition'];
}
if (array_key_exists('ftpSetup', $arr['config'])) {
$this->ftpSetup = $arr['config']['ftpSetup'];
}
if (array_key_exists('fileSetup', $arr['config'])) {
$this->fileSetup = $arr['config']['fileSetup'];
}
if (array_key_exists('fileMaps', $arr['config'])) {
$this->fileMaps = $arr['config']['fileMaps'];
}
if (array_key_exists('fileRows', $arr['config'])) {
$this->fileRows = $arr['config']['fileRows'];
}
$this->flag = true;
return true;
}
}
推荐答案
@expectedException在这里异常不是一个好主意.如果在测试设置中抛出异常(例如，测试的第一行)，则测试仍会通过.
@expectedException Exception is not a good idea here. If an exception is thrown in your test setup (e.g. first line of you test) your test will still pass.
您可以使用:
//given
$conf = ...;
try {
//when
$conf->getConfig();
$this->fail("YourException expected");
//then
} catch (YourException $e) {}
但是它很杂乱，不能与Exception一起使用(因为phpunit fail也会抛出Exception).因此，您将不得不使用自定义异常.
But it's messy and will not work with Exception (because phpunit fail also throws Exception). So you would have to use a custom exception.
您可以在
You can try CatchException from ouzo goodies:
//given
$conf = ...;
//when
CatchException::when($conf)->getConfig();
//then
CatchException::assertThat()->isInstanceOf("Exception");
这篇关于测试异常PHPUnit的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
