[PATCH v6 05/19] test: Avoid failing skipped tests

[Simon Glass <sjg@chromium.org>]

When a test returns -EAGAIN this should not be considered a failure.
Fix what seems to be a problem case, where the pytests see a failure
when a test has merely been skipped.

We cannot squash the -EAGAIN error in ut_run_test() since the failure
count is incremented by its caller, ut_run_test_live_flat()

The specific example here is on snow, where a test is compiled into the
image but cannot run, so returns -EAGAIN to skip:

    test/py/tests/test_ut.py sssnow # ut bdinfo bdinfo_test_eth
    Test: bdinfo_test_eth: bdinfo.c
    Skipping: Console recording disabled
    test/test-main.c:486, ut_run_test_live_flat(): 0 == ut_run_test(uts,
    test, test->name): Expected 0x0 (0), got 0xfffffff5 (-11)
    Test bdinfo_test_eth failed 1 times
    Skipped: 1, Failures: 1
    snow # F+u-boot-test-reset snow snow

The fix is simply to respect the return code from ut_run_test(), so do
that.

Signed-off-by: Simon Glass <sjg@chromium.org>
---

(no changes since v4)

Changes in v4:
- Expand the commit message

 test/test-main.c | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/test/test-main.c b/test/test-main.c
index b3d3e24cdce..b613fc6a4d3 100644
--- a/test/test-main.c
+++ b/test/test-main.c
@@ -486,7 +486,7 @@ static int ut_run_test(struct unit_test_state *uts, struct unit_test *test,
 static int ut_run_test_live_flat(struct unit_test_state *uts,
 				 struct unit_test *test)
 {
-	int runs;
+	int runs, ret;
 
 	if ((test->flags & UTF_OTHER_FDT) && !IS_ENABLED(CONFIG_SANDBOX))
 		return skip_test(uts);
@@ -496,8 +496,11 @@ static int ut_run_test_live_flat(struct unit_test_state *uts,
 	if (CONFIG_IS_ENABLED(OF_LIVE)) {
 		if (!(test->flags & UTF_FLAT_TREE)) {
 			uts->of_live = true;
-			ut_assertok(ut_run_test(uts, test, test->name));
-			runs++;
+			ret = ut_run_test(uts, test, test->name);
+			if (ret != -EAGAIN) {
+				ut_assertok(ret);
+				runs++;
+			}
 		}
 	}
 
@@ -521,8 +524,11 @@ static int ut_run_test_live_flat(struct unit_test_state *uts,
 	    (!runs || ut_test_run_on_flattree(test)) &&
 	    !(gd->flags & GD_FLG_FDT_CHANGED)) {
 		uts->of_live = false;
-		ut_assertok(ut_run_test(uts, test, test->name));
-		runs++;
+		ret = ut_run_test(uts, test, test->name);
+		if (ret != -EAGAIN) {
+			ut_assertok(ret);
+			runs++;
+		}
 	}
 
 	return 0;
-- 
2.43.0