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In case law, a test case is a lawsuit whose purpose is to establish an important legal principle or right and to set a precedent. [1] Test cases are brought to court with the intention of challenging, interpreting, or receiving clarification on a present law , regulation, or constitutional principle. [ 2 ]
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The programmer must have a deep understanding of the application to know what kinds of test cases to create so that every visible path is exercised for testing. Once the source code is understood then it can be analyzed for test cases to be created. The following are the three basic steps that white-box testing takes in order to create test cases:
This level of testing usually requires thorough test cases to be provided to the tester, who then can simply verify that for a given input, the output value (or behavior), either "is" or "is not" the same as the expected value specified in the test case. Test cases are built around specifications and requirements, i.e., what the application is ...
The result of the test design is a set of test cases based on the specification. These test cases can be designed prior to the implementation starts, and should be implementation-independent. Test first way of test design is very important as efficiently supports defect prevention. Based on the application and the present test coverage further ...
Smoke tests are a subset of test cases that cover the most important functionality of a component or system, used to aid assessment of whether main functions of the software appear to work correctly. [ 1 ] [ 2 ] When used to determine if a computer program should be subjected to further, more fine-grained testing, a smoke test may be called a ...
Having test cases depend on system state manipulated from previously executed test cases (i.e., you should always start a unit test from a known and pre-configured state). Dependencies between test cases. A test suite where test cases are dependent upon each other is brittle and complex. Execution order should not be presumed.
Some common problems that occur when designing test cases include: Test cases can be designed simply by selecting only valid input values for each field in the software. When changes are made in a particular module, the previous values may not actually test the new features introduced after the older version of software. There may be some ...