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Testing libsosplugin
=====================================
**Test assembly**
Compile test assembly file using any C# compiler you have, for example:
- `gmcs test.cs`
- `corerun csc.exe /nologo /r:System.Private.CoreLib.dll test.cs`
**Running tests**
Make sure that python's lldb module is accessible. To run the tests, use the following command:
`python2 test_libsosplugin.py --corerun=corerun --sosplugin=sosplugin --assembly=assembly --timeout=timeout`
- `lldb` is a path to `lldb` to run
- `clrdir` is a directory with `corerun` and sosplugin
- `assembly` is a compiled test assembly (e.g. Test.exe)
- `timeout` is a deadline for a single test (in seconds)
- `regex` is a regular expression matching tests to run
- `repeat` is a number of passes for each test
Log files for both failed and passed tests are `*.log` and `*.log.2` for standard output and error correspondingly.
**Writing tests**
Tests start with the `TestSosCommands` class defined in `test_libsosplugin.py`. To add a test to the suite, start with implementing a new method inside this class whose name begins with `test_`. Most new commands will require only one line of code in this method: `self.do_test("scenarioname")`. This command will launch a new `lldb` instance, which in turn will call the `runScenario` method from `scenarioname` module. `scenarioname` is the name of the python module that will be running the scenario inside `lldb` (found in `tests` folder alongside with `test_libsosplugin.py` and named `scenarioname.py`).
An example of a scenario looks like this:
import lldb
def runScenario(assemblyName, debugger, target):
process = target.GetProcess()
# do some work
process.Continue()
return True
`runScenario` method does all the work related to running the scenario: setting breakpoints, running SOS commands and examining their output. It should return a boolean value indicating a success or a failure.
***Note:*** `testutils.py` defines some useful commands that can be reused in many scenarios.
**Useful links**
[Python scripting in LLDB](http://lldb.llvm.org/python-reference.html)
[Python unittest framework](https://docs.python.org/2.7/library/unittest.html)
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