[PATCH] tests/qtest/vhost-user-blk-test: don't abort all qtests on missing envar

[Christian Schoenebeck]

This test requires environment variable QTEST_QEMU_STORAGE_DAEMON_BINARY
to be defined for running. If not, it would immediately abort all qtests
and prevent other, unrelated tests from running.

To fix that, just skip vhost-user-blk-test instead and log a message
about missing environment variable.

Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
---

 I also tried g_test_skip(errmsg) from the setup handlers instead, but it
 always caused the tests to abort with an error:
 
 ../tests/qtest/libqtest.c:179: kill_qemu() tried to terminate QEMU process
 but encountered exit status 1 (expected 0)
 
 I haven't further investigated.

 tests/qtest/vhost-user-blk-test.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tests/qtest/vhost-user-blk-test.c 
b/tests/qtest/vhost-user-blk-test.c
index 07a4c2d500..dc37f5af4d 100644
--- a/tests/qtest/vhost-user-blk-test.c
+++ b/tests/qtest/vhost-user-blk-test.c
@@ -983,6 +983,12 @@ static void register_vhost_user_blk_test(void)
         .before = vhost_user_blk_test_setup,
     };
 
+    if (!getenv("QTEST_QEMU_STORAGE_DAEMON_BINARY")) {
+        g_test_message("QTEST_QEMU_STORAGE_DAEMON_BINARY not defined, "
+                       "skipping vhost-user-blk-test");
+        return;
+    }
+
     /*
      * tests for vhost-user-blk and vhost-user-blk-pci
      * The tests are borrowed from tests/virtio-blk-test.c. But some tests
-- 
2.30.2