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Diffstat (limited to 'src/testlib/doc/src/qttestlib-manual.qdoc')
-rw-r--r-- | src/testlib/doc/src/qttestlib-manual.qdoc | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/src/testlib/doc/src/qttestlib-manual.qdoc b/src/testlib/doc/src/qttestlib-manual.qdoc index 8ff82ba28f..cae17c347b 100644 --- a/src/testlib/doc/src/qttestlib-manual.qdoc +++ b/src/testlib/doc/src/qttestlib-manual.qdoc @@ -134,6 +134,47 @@ For more examples, refer to the \l{Qt Test Tutorial}. + \section1 Increasing Test Function Timeout + + QtTest limits the run-time of each test to catch infinite loops and similar + bugs. By default, any test function call will be interrupted after five + minutes. For data-driven tests, this applies to each call with a distinct + data-tag. This timeout can be configured by setting the \c QTEST_FUNCTION_TIMEOUT + environment variable to the maximum number of milliseconds that is acceptable + for a single call to take. If a test takes longer than the configured timeout, + it is interrupted, and \c qFatal() is called. As a result, the test aborts by + default, as if it had crashed. + + To set \c QTEST_FUNCTION_TIMEOUT from the command line on Linux or macOS, enter: + + \badcode + QTEST_FUNCTION_TIMEOUT=900000 + export QTEST_FUNCTION_TIMEOUT + \endcode + + On Windows: + \badcode + SET QTEST_FUNCTION_TIMEOUT=900000 + \endcode + + Then run the test inside this environment. + + Alternatively, you can set the environment variable programmatically in the + test code itself, for example by calling, from the + \l{Creating a Test}{initMain()} special method of your test class: + + \badcode + qputenv("QTEST_FUNCTION_TIMEOUT", "900000"); + \endcode + + To calculate a suitable value for the timeout, see how long the test usually + takes and decide how much longer it can take without that being a symptom of + some problem. Convert that longer time to milliseconds to get the timeout value. + For example, if you decide that a test that takes several minutes could + reasonably take up to twenty minutes, for example on a slow machine, + multiply \c{20 * 60 * 1000 = 1200000} and set the environment variable to + \c 1200000 instead of the \c 900000 above. + \if !defined(qtforpython) \section1 Building a Test @@ -154,6 +195,12 @@ All labeled targets will be run when \c {test} target is called on the command line. + \note On Android, if you have one connected device or emulator, tests will + run on that device. If you have more than one device connected, set the + environment variable \c {ANDROID_DEVICE_SERIAL} to the + \l {Android: Query for devices}{ADB serial number} of the device that + you want to run tests on. + There are several other advantages with CMake. For example, the result of a test run can be published on a web server using CDash with virtually no effort. |