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Parameterization with unique data using Datasets
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Unregistered User Posts: 509
8/22/2012
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The questions below where copied from this post to start a new discussion for better searchability.
My application is a silverlight system. Here's a very simple test case; add a new record and save. User need to input ItemName and Price. The ItemName cannot be a duplicate. So there will be a validation when he submits, if what he typed has already been existing in DB, he will get an error and the save operation will fail, but my test case is typing an valid value and save successfully.
I want to simulate 200 users perform this action at the same time(SteadyLoad), and number of iterations is 1. My questions (all my questions are based on this precondition):
1, Now is it required to prepare 200 test data which has different Itemname and price for my test case? If I don't set any data for my test case, what will it happened? I think all 200 new records can not save to DB, so the save action is not simulated correctly as my expected, is that correct?
2, If the answer of NO.1 is Yes. I have another question. If I want to test in the mode of step load, increase 1 user per 5 sec. Due to the fact that I'm not sure how many times the test case will be performed since the first user must run more times than the last user. How many test data I need to prepare?
3, If I want to test many users, ie. tens of thousands of users, do I need to prepare same numbers of test data for all new added records?
Thank you very much
shasha
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Vadim @StresStimulus Administrator Posts: 583
8/22/2012
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Below are the answers:
1. Yes, you need at least 200 records with unique data.
2. The dataset should have at least as many records, as the number of iterations your test will issue. If your test completion criterion is set to "the number of combine iterations", then you need that many records. if your test completion criterion is set to "run duration" or "reaching Max users", then try to estimate the expected number of iterations, or determine it experimentally. When configuring parameterization, make sure to use sequential data-binding method described in the item3 of this post http://www.stresstimulus.com/blog/post/pro-edition-beta-part-1
3. If you need to simulate tens of thousands unique entries, then you should have tens of thousands data rows with unique data.
Cheers,
Vadim
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