t/xap_helper: bail on build failure if TEST_XH_CXX_ONLY

We shouldn't transparently fall back to the Perl bindings test
on build failures if the tester wants to explicitly test the C++
implementation.

diff --git a/t/xap_helper.t b/t/xap_helper.t
index e87c9da8ec8cdbe59fe150d36963d790b11bd61c..da26b9a86fe240ae6ff6121d2b8a9fdd9e5e60e6 100644 (file)
--- a/t/xap_helper.t
+++ b/t/xap_helper.t
@@ -189,7 +189,10 @@ SKIP: {
                require PublicInbox::XapHelperCxx;
                PublicInbox::XapHelperCxx::cmd();
        };
-       skip "XapHelperCxx build: $@", 1 if $@;
+       if ($@) {
+               xbail "C++ build failed: $@" if $ENV{TEST_XH_CXX_ONLY};
+               skip "XapHelperCxx build: $@", 1;
+       }
 
        @NO_CXX = $ENV{TEST_XH_CXX_ONLY} ? (0) : (0, 1);
        my $ar = $test->(@$cmd, '-j0');