tests: Add unit test for initialisation with NULL programmer param

Programmer param can be NULL and this is a valid case which can
be covered by unit test.

`run_lifecycle` needs an adjustment to handle NULL as programmer
param, which is also included in the patch.

Change-Id: I409f1c9ac832943e54107f7cf8652d1f46ac67df
Signed-off-by: Anastasia Klimchuk <aklm@chromium.org>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/67642
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
Reviewed-by: Felix Singer <felixsinger@posteo.net>
Reviewed-by: Thomas Heijligen <src@posteo.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

tests/dummyflasher.c

@@ -110,6 +110,19 @@ void dummy_init_success_unhandled_param_test_success(void **state)
 				"bus=spi,emulate=W25Q128FV,voltage=3.5V", ERROR_FATAL);
 }
 
+void dummy_null_prog_param_test_success(void **state)
+{
+	struct io_mock_fallback_open_state dummy_fallback_open_state = {
+		.noc = 0,
+		.paths = { NULL },
+	};
+	const struct io_mock dummy_io = {
+		.fallback_open_state = &dummy_fallback_open_state,
+	};
+
+	run_basic_lifecycle(state, &dummy_io, &programmer_dummy, NULL);
+}
+
 #else
 	SKIP_TEST(dummy_basic_lifecycle_test_success)
 	SKIP_TEST(dummy_probe_lifecycle_test_success)
@@ -117,4 +130,5 @@ void dummy_init_success_unhandled_param_test_success(void **state)
 	SKIP_TEST(dummy_init_fails_unhandled_param_test_success)
 	SKIP_TEST(dummy_init_success_invalid_param_test_success)
 	SKIP_TEST(dummy_init_success_unhandled_param_test_success)
+	SKIP_TEST(dummy_null_prog_param_test_success)
 #endif /* CONFIG_DUMMY */

tests/lifecycle.c

@@ -39,7 +39,8 @@ static void run_lifecycle(void **state, const struct io_mock *io, const struct p
 	io_mock_register(io);
 
 	struct flashrom_programmer *flashprog;
-	char *param_dup = strdup(param);
+
+	char *param_dup = param ? strdup(param) : NULL;
 
 	printf("Testing flashrom_programmer_init for programmer=%s ...\n", prog->name);
 	assert_int_equal(0, flashrom_programmer_init(&flashprog, prog->name, param_dup));

tests/tests.c

@@ -424,6 +424,7 @@ int main(int argc, char *argv[])
 		cmocka_unit_test(dummy_init_fails_unhandled_param_test_success),
 		cmocka_unit_test(dummy_init_success_invalid_param_test_success),
 		cmocka_unit_test(dummy_init_success_unhandled_param_test_success),
+		cmocka_unit_test(dummy_null_prog_param_test_success),
 		cmocka_unit_test(nicrealtek_basic_lifecycle_test_success),
 		cmocka_unit_test(raiden_debug_basic_lifecycle_test_success),
 		cmocka_unit_test(dediprog_basic_lifecycle_test_success),

tests/tests.h

@@ -48,6 +48,7 @@ void dummy_probe_variable_size_test_success(void **state);
 void dummy_init_fails_unhandled_param_test_success(void **state);
 void dummy_init_success_invalid_param_test_success(void **state);
 void dummy_init_success_unhandled_param_test_success(void **state);
+void dummy_null_prog_param_test_success(void **state);
 void nicrealtek_basic_lifecycle_test_success(void **state);
 void raiden_debug_basic_lifecycle_test_success(void **state);
 void dediprog_basic_lifecycle_test_success(void **state);