In a development environment where developers are freely given root / admin access to their personal development VM's is there a need to prevent integration testers from having root / admin access in their personal testing VM's?
This question is not about whether a test should be run with root privileges. It's about whether a person who writes tests has to ask someone else to configure the personal VM they use to create the tests.
The situation looks pretty simple to me: people need the tools to do their job correctly. If they need root access, they should be given root access and they should be trusted (and trained, if necessary) to use it responsibly.
While root/admin access to the machine may be useful for setting up the environment, tests should be run in a way the "normal" user of the product does. In most cases, this will mean that a "normal" user account should be used (that does not exclude an additional root account for setup/configuration). If the system under test has its own user rights management, tests with low user rights are extremely important. In my experience, the worst and hardest to find bugs involve problems with user rights.
From the point of view of testing, the access rights typically granted to developers are irrelevant. Granting root/admin rights to testers is only relevant if they have to perform tasks requiring such elevated rights (which might be the case for setup and configuration). And they should be aware that when tempering with the machine configuration, this may have influences on their test results and may yield reproducibility issues. Hence, not granting elevated rights should normally be the way to go.
As operations may include deployment and system configuration activities (including activities that require root access), some integration testers may need root access (including to test servers) in order to test the quality attributes intended for operations (e.g. operability).
Of course a system has not only operations, but also end-users. Some integration testers must therefore test that end user features work as expected (i.e. without root access: some times, things do not work as well without root access as they should, and these issues must be caught during the tests).
So in short: nothing speaks against root access for some integration testers, but something advocates that at least some integration tester have only end user access (i.e: no root access, neither on their vm nor to the server)
If the majority of customers runs the software not as a root user, then the tester should not run it as a root user. There may be bugs that make your software work only as root, and you want to find that before you ship to customers.
If you suspect that some customers might run as root, you might have one machine where you run the software as root - in case the software does something stupid that is prevented by lack of privileges, but causes damage as root. On the other hand, people who run as root without a very good reason have no excuse.
Wow okay these look pretty powerful. The only issue I could see myself having: How to get every 3rd event in rooteventselector? Would I have to call it many times with the same destination but like so:
I was trying to find an answer but it seems it's not directly discussed a lot. I have a composition root of my application where I create a DI-container and register everything there and then resolve needed top-level classes that gets all dependencies. As this is all happening internally - it becomes hard to unit test the composition root. You can do virtual methods, protected fields and so on, but I am not a big fan of introducing such things just to be able to unit test. There are no big problems with other classes as they all use constructor injection. So the question is - does it make much sense to test the composition root at all? It does have some additional logic, but not much and in most cases any failures there would pop up during application start.Some code that I have:
These tests however are specifically targeted at the correctness of the wiring of the system. You don't want to test whether a single class functions correctly, since that's already covered by some unit test. Neither do you want to test whether classes call other classes in the right order, because that's what you want to test in your normal integration tests (call an MVC controller and see whether the call ends up in the database is an example of such integration test).
Some containers even have some sort of verification method that can be called that will verify the configuration. What 'verify' means differs for each library. Simple Injector for instance (I'm the lead dev for Simple Injector) has a Verify method that will simply iterate all registrations and call GetInstance on each of them to ensure every instance can be created. I always advice users you call Verify in their composition root whenever possible. This is not always possible for instance because when the configuration gets big, a call to Verify can cause the application to start too slowly. But still, it's a good starting point and can remove a lot of pain. If it takes to long, you can always move the call to an automated test.
And for Simple Injector, this is just the beginning. Simple Injector contains Diagnostic Services that checks the container on common misconfigurations, such as the earlier stated 'lifestyle mismatch'.
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where a n \displaystyle a_n are the terms of the series, and states that the series converges absolutely if this quantity is less than one, but diverges if it is greater than one. It is particularly useful in connection with power series.
The root test was developed first by Augustin-Louis Cauchy who published it in his textbook Cours d'analyse (1821).[1] Thus, it is sometimes known as the Cauchy root test or Cauchy's radical test. For a series
Mocha is a feature-rich JavaScript test framework running on Node.js and in the browser, making asynchronous testing simple and fun. Mocha tests run serially, allowing for flexible and accurate reporting, while mapping uncaught exceptions to the correct test cases. Hosted on GitHub.
By adding an argument (usually named done) to it() to a test callback, Mocha will know that it should wait for this function to be called to complete the test. This callback accepts both an Error instance (or subclass thereof) or a falsy value; anything else is invalid usage and throws an error (usually causing a failed test).
If you need to perform asynchronous operations before any of your suites are run (e.g. for dynamically generating tests), you may delay the root suite. Run mocha with the --delay flag. This will attach a special callback function, run(), to the global context:
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Be mindful not to commit usages of .only() to version control, unless you really mean it! To do so one can run mocha with the option --forbid-only in the continuous integration test command (or in a git precommit hook).
In v3.0.0 or newer, a parameter passed to this.timeout() greater than the maximum delay value will cause the timeout to be disabled. In v8.0.0 or newer, this.enableTimeouts() has been removed. Warning: With async tests if you disable timeouts via this.timeout(0) and then do not call done(), your test will exit silently.
By default, Mocha will attempt to trap uncaught exceptions thrown from running tests and report these as test failures. Use --allow-uncaught to disable this behavior and allow uncaught exceptions to propagate. Will typically cause the process to crash.
Use this option to have Mocha check for global variables that are leaked while running tests. Specify globals that are acceptable via the --global option (for example: --check-leaks --global jQuery --global MyLib).
For Node.js and V8 options. Mocha forwards these options to Node.js by spawning a new child-process.
The options are set without leading dashes --, e.g. -n require=foo -n unhandled-rejections=strict
By default, Mocha looks for a package.json in the current working directory or nearest ancestor, and will use the first file found (regardless of whether it contains a mocha property); to suppress package.json lookup, use --no-package.
To exclude all files in a directory it is preferable to use foo/bar instead of foo/bar/**/*. The latter will still watch the directory foo/bar but will ignore all changes to the content of that directory.
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