[PATCH v2 3/3] selftests/user_events: Add test cases when event is disabled

When user_events are disabled, it's write operation should be fail. Add this test cases.

Signed-off-by: sunliming sunliming@kylinos.cn --- tools/testing/selftests/user_events/ftrace_test.c | 4 ++++ 1 file changed, 4 insertions(+)

diff --git a/tools/testing/selftests/user_events/ftrace_test.c b/tools/testing/selftests/user_events/ftrace_test.c index d33bd31425db..cf52789bafda 100644 --- a/tools/testing/selftests/user_events/ftrace_test.c +++ b/tools/testing/selftests/user_events/ftrace_test.c @@ -297,6 +297,10 @@ TEST_F(user, write_events) { io[0].iov_base = &reg.write_index; io[0].iov_len = sizeof(reg.write_index);

+ /* Write should fail when event is not enabled */ + ASSERT_EQ(-1, writev(self->data_fd, (const struct iovec *)io, 3)); + ASSERT_EQ(ENOENT, errno); + /* Enable event */ self->enable_fd = open(enable_file, O_RDWR); ASSERT_NE(-1, write(self->enable_fd, "1", sizeof("1")))