Re: [libvirt] [PATCH 1/7] Introduce a new set of helper macros for mocking symbols

Introduce virmock.h which provides some macros to assist in creation of LD_PRELOAD overrides. When these are used, the LD_PRELOAD code simply has some stubs which forward to a wrapper function inside the main test case. This means that logic for the test no longer has to be split between the virXXXtest.c and virXXXmock.c files. It will also make it possible to provide some common reusable modules for mocking code like DBus. Signed-off-by: Daniel P. Berrange <berrange(a)redhat.com&gt; --- tests/Makefile.am | 3 +- tests/virmock.h | 298 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 300 insertions(+), 1 deletion(-) create mode 100644 tests/virmock.h diff --git a/tests/Makefile.am b/tests/Makefile.am index 3267ad3..459e104 100644 --- a/tests/Makefile.am +++ b/tests/Makefile.am @@ -123,7 +123,8 @@ EXTRA_DIST = \ xml2sexprdata \ xml2vmxdata \ vmwareverdata \ - .valgrind.supp + .valgrind.supp \ + virmock.h

+ +# define VIR_MOCK_COUNT_ARGS(...) VIR_MOCK_ARG21(__VA_ARGS__, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1) +# define VIR_MOCK_ARG21(_1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21, ...) _21 +# define VIR_MOCK_ARG_PASTE(a, b, ...) a##b(__VA_ARGS__)

+/* + * The VIR_MOCK_LINK_NNN_MMM() macros are intended for use in + * LD_PRELOAD based wrappers. They provide a replacement for + * for an existing shared library symbol export. They will + * then lookup the same symbol name but with 'wrap_' prefixed + * on it, and call that. + * + * The actual test suite should provide the implemention of

+/** + * VIR_MOCK_LINK_RET_ARGS: