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To add a new IPDL C++ unit test, you need to create (at least) the
following files (for a test "TestFoo"):
- PTestFoo.ipdl, specifying the top-level protocol used for the test
- TestFoo.h, declaring the top-level parent/child actors used for
the test
- TestFoo.cpp, defining the top-level actors
- (make sure all are in the namespace mozilla::_ipdltest)
Next
- add PTestFoo.ipdl to ipdl.mk
- append TestFoo to the variable IPDLTESTS in Makefile.in
You must define three methods in your |TestFooParent| class:
- static methods |bool RunTestInProcesses()| and
|bool RunTestInThreads()|. These methods control whether
to execute the test using actors in separate processes and
threads respectively. Generally, both should return true.
- an instance method |void Main()|. The test harness wil first
initialize the processes or threads, create and open both actors,
and then kick off the test using |Main()|. Make sure you define
it.
If your test passes its criteria, please call
|MOZ_IPDL_TESTPASS("msg")| and "exit gracefully".
If your tests fails, please call |MOZ_IPDL_TESTFAIL("msg")| and "exit
ungracefully", preferably by abort()ing.
If all goes well, running
make -C $OBJDIR/ipc/ipdl/test/cxx
will update the file IPDLUnitTests.cpp (the test launcher), and your
new code will be built automatically.
You can launch your new test by invoking one of
make -C $OBJDIR/ipc/ipdl/test/cxx check-proc (test process-based tests)
make -C $OBJDIR/ipc/ipdl/test/cxx check-threads (test thread-based tests)
make -C $OBJDIR/ipc/ipdl/test/cxx check (tests both)
If you want to launch only your test, run
cd $OBJDIR/dist/bin
./run-mozilla.sh ./ipdlunittest TestFoo (test in two processes, if appl.)
./run-mozilla.sh ./ipdlunittest thread:TestFoo (test in two threads, if appl.)
For a bare-bones example of adding a test, take a look at
PTestSanity.ipdl, TestSanity.h, TestSanity.cpp, and how "TestSanity"
is included in ipdl.mk and Makefile.in.
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