Add a fixture-based test with a single variant and mark it with
XFAIL_ADD(). The test intentionally fails and is expected to be
accounted as XFAIL, covering the constructor ordering dependency
between TEST_F() registration and XFAIL_ADD() registration.

Suggested-by: Thomas Weißschuh <[email protected]>
Signed-off-by: Sun Jian <[email protected]>
---
v2:
- update Suggested-by address
- update harness-selftest.expected
- verify with 'make run_tests'

 .../kselftest_harness/harness-selftest.c      | 23 ++++++++++
 .../harness-selftest.expected                 | 43 +++++++++++--------
 2 files changed, 47 insertions(+), 19 deletions(-)

diff --git a/tools/testing/selftests/kselftest_harness/harness-selftest.c 
b/tools/testing/selftests/kselftest_harness/harness-selftest.c
index 7820bb5d0e6d..9920ef7e4385 100644
--- a/tools/testing/selftests/kselftest_harness/harness-selftest.c
+++ b/tools/testing/selftests/kselftest_harness/harness-selftest.c
@@ -118,6 +118,29 @@ TEST_F(fixture_setup_failure, pass) {
        TH_LOG("after");
 }
 
+FIXTURE(xfail_ctor_ordering) {
+};
+
+FIXTURE_SETUP(xfail_ctor_ordering) {
+}
+
+FIXTURE_TEARDOWN(xfail_ctor_ordering) {
+}
+
+FIXTURE_VARIANT(xfail_ctor_ordering) {
+       int dummy;
+};
+
+FIXTURE_VARIANT_ADD(xfail_ctor_ordering, only) {
+       .dummy = 0,
+};
+
+TEST_F(xfail_ctor_ordering, expected_fail) {
+       ASSERT_EQ(1, 0);
+}
+
+XFAIL_ADD(xfail_ctor_ordering, only, expected_fail);
+
 int main(int argc, char **argv)
 {
        /*
diff --git 
a/tools/testing/selftests/kselftest_harness/harness-selftest.expected 
b/tools/testing/selftests/kselftest_harness/harness-selftest.expected
index 97e1418c1c7e..e0088c9e07b2 100644
--- a/tools/testing/selftests/kselftest_harness/harness-selftest.expected
+++ b/tools/testing/selftests/kselftest_harness/harness-selftest.expected
@@ -1,6 +1,6 @@
 TAP version 13
-1..9
-# Starting 9 tests from 4 test cases.
+1..10
+# Starting 10 tests from 5 test cases.
 #  RUN           global.standalone_pass ...
 # harness-selftest.c:19:standalone_pass:before
 # harness-selftest.c:23:standalone_pass:after
@@ -24,15 +24,12 @@ ok 3 global.signal_pass
 # signal_fail: Test terminated by assertion
 #          FAIL  global.signal_fail
 not ok 4 global.signal_fail
-#  RUN           fixture.pass ...
-# harness-selftest.c:53:pass:setup
-# harness-selftest.c:62:pass:before
-# harness-selftest.c:19:pass:before
-# harness-selftest.c:23:pass:after
-# harness-selftest.c:66:pass:after
-# harness-selftest.c:58:pass:teardown same-process=1
-#            OK  fixture.pass
-ok 5 fixture.pass
+#  RUN           fixture.timeout ...
+# harness-selftest.c:53:timeout:setup
+# harness-selftest.c:77:timeout:before
+# timeout: Test terminated by timeout
+#          FAIL  fixture.timeout
+not ok 5 fixture.timeout
 #  RUN           fixture.fail ...
 # harness-selftest.c:53:fail:setup
 # harness-selftest.c:70:fail:before
@@ -41,12 +38,15 @@ ok 5 fixture.pass
 # fail: Test terminated by assertion
 #          FAIL  fixture.fail
 not ok 6 fixture.fail
-#  RUN           fixture.timeout ...
-# harness-selftest.c:53:timeout:setup
-# harness-selftest.c:77:timeout:before
-# timeout: Test terminated by timeout
-#          FAIL  fixture.timeout
-not ok 7 fixture.timeout
+#  RUN           fixture.pass ...
+# harness-selftest.c:53:pass:setup
+# harness-selftest.c:62:pass:before
+# harness-selftest.c:19:pass:before
+# harness-selftest.c:23:pass:after
+# harness-selftest.c:66:pass:after
+# harness-selftest.c:58:pass:teardown same-process=1
+#            OK  fixture.pass
+ok 7 fixture.pass
 #  RUN           fixture_parent.pass ...
 # harness-selftest.c:87:pass:setup
 # harness-selftest.c:96:pass:before
@@ -60,5 +60,10 @@ ok 8 fixture_parent.pass
 # pass: Test terminated by assertion
 #          FAIL  fixture_setup_failure.pass
 not ok 9 fixture_setup_failure.pass
-# FAILED: 4 / 9 tests passed.
-# Totals: pass:4 fail:5 xfail:0 xpass:0 skip:0 error:0
+#  RUN           xfail_ctor_ordering.only.expected_fail ...
+# harness-selftest.c:139:expected_fail:Expected 1 (1) == 0 (0)
+# expected_fail: Test terminated by assertion
+#          FAIL  xfail_ctor_ordering.only.expected_fail
+ok 10 xfail_ctor_ordering.only.expected_fail # XFAIL unknown
+# FAILED: 5 / 10 tests passed.
+# Totals: pass:4 fail:5 xfail:1 xpass:0 skip:0 error:0

base-commit: 1f318b96cc84d7c2ab792fcc0bfd42a7ca890681
-- 
2.43.0


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