Mar 14, '07
In general, testing is finding out how well something works. In terms of human beings, testing tells what level of knowledge or skill has been acquired. In computer hardware and software development, testing is used at key checkpoints in the overall process to determine whether objectives are being met. For example, in software development, product objectives are sometimes tested by product user representatives. When the design is complete, coding follows and the finished code is then tested at the unit or module level by each programmer; at the component level by the group of programmers involved; and at the system level when all components are combined together. At early or late stages, a product or service may also be tested for usability.
In laymans word:
Testing is Cracking down System/Software.
Now Some important stuff about Testing:
Testing that the software is producing correct output will be referred to as validation. As in regression testing, we have two sets of output, test and control, but we have the additional constraint that the control output has been verified to be correct. In this case, we will refer to the control output as model output.
There are two important concepts involved in measuring the quality of software:
Quality Control (QC), or testing, involves running the software to make sure that it does not produce errors (crash), and to make sure that it produces the correct result. QC is concerned with the detection of problems (bugs).
Quality Assurance (QA) is concerned with the quality of the process that produces the software. This involves establishing and enforcing standards and procedures for software development. QA is concerned with the prevention of bugsTesting that the software is producing correct output will be referred to as validation. As in regression testing, we have two sets of output, test and control, but we have the additional constraint that the control output has been verified to be correct. In this case, we will refer to the control output as model output.
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