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From MozillaWiki
LogCompare
LogCompare displays the test result initially stored in the log file created as tests are run for a build.
LogCompare specifically:
- displays test results by product (e.g. Firefox, Fennec), by platform (e.g. Linux, Maemo, Windows), and test types (e.g. crashtest, mochitest, xpcshell).
- for each test result, displays the result for individual test file including the name of the test file, the count for passes, failures, and todos, as well as failure messages if present.
- compares any two test results at test file level to organize and group them into different categories for easier lookup.
- shows a history of an individual test file.