testsuite: add option to copy output from test

This is helpful while debugging the tests: copy the output from test
(both stdout and stderr) to the stdout of the parent process.

2 files changed, 7 insertions, 0 deletions

diff --git a/testsuite/testsuite.c b/testsuite/testsuite.c
index 686f188..8512b56 100644
--- a/testsuite/testsuite.c
+++ b/testsuite/testsuite.c
@@ -423,6 +423,12 @@ static inline bool test_run_parent_check_outputs(const struct test *t,
 
 				buf[r] = '\0';
 				bufmatch[r] = '\0';
+
+				if (t->print_outputs)
+					printf("%s: %s\n",
+					       fd_match == fd_matchout ? "STDOUT:" : "STDERR:",
+					       buf);
+
 				if (!streq(buf, bufmatch)) {
 					ERR("Outputs do not match on %s:\n",
 						fd_match == fd_matchout ? "STDOUT" : "STDERR");
diff --git a/testsuite/testsuite.h b/testsuite/testsuite.h
index 9db1d1a..3bd74f3 100644
--- a/testsuite/testsuite.h
+++ b/testsuite/testsuite.h
@@ -102,6 +102,7 @@ struct test {
 	const struct keyval *env_vars;
 	bool need_spawn;
 	bool expected_fail;
+	bool print_outputs;
 } __attribute__((aligned(8)));