The proposed system use existing fault localization technique likeTarantula, Ochiai, and Jaccard. These techniques predict the location of a fault by computing, for each statement, the percentages of passing and failing tests that execute that statement. The enhanced source mapping is a new technique to localize faults effectively in web applications written in PHP by using an extended domain for conditional and function-call statements. Applying this technique to conditional statements helps fault localization with the identification of errors of omission such as missing branches, and applying the technique to function calls enables us to differentiate normal return values from values such as null that are often correlated with erroneous behavior (e.g., incorrect handling of corner cases). A directed test case generation mehtod is used to generate the test case. This method reduces the test suite and maximizes the fault localization effectiveness.
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