[Interest] QTest unit tests can't find .moc files

[Thomas Sevaldrud]

Hi,

I've a very strange problem with my QTest unit tests. I use the QTest
project wizard from Qt Creator and end up with a class that includes a moc
file at the bottom of the source just like in the QTest documentation
examples, typically something like this:

tst_foo.cpp:

class FooTests : public QObject
{
     Q_OBJECT
   ...

private Q_SLOTS:
     void testSomething();
}

void testSomething()
{
   QVERIFY(true);
}

QTEST_APPLESS_MAIN(Foo)

#include "tst_foo.moc"

Now, this work nicely most of the time, but sometimes it fails to compile
with the error message "Cannot open include file 'tst_foo.moc': No such
file or directory.

I've looked at the generated Makefile and found that in the cases where
this fails, the .moc file has a dependency to itself in the Makefile, i.e
the make rule is something like this:

debug\tst_foo.moc: C:\Qt\5.2.1\msvc2010_opengl\include\QtCore\QString \
C:\Qt\5.2.1\msvc2010_opengl\include\QtCore\qstring.h \
                ....
                <path to source tree>\tst_foo.moc \
               <path to source tree>\tst_foo.cpp
      C:\Qt\5.2.1\msvc2010_opengl\bin\moc.exe $(DEFINES) -D_MSC_VER=1600
-D_WIN32 $(INCPATH) <path to source tree>\tst_foo.cpp -o debug\tst_foo.moc

In the cases where it works, the .moc file is not in the dependency list

I really can't see what triggers this, it seems completely random. Some
times it happens, other times it doesn't....

Any ideas?
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