tests: add mocks for libusb's asynchronous API

This patch adds mocks for several libusb functions are introduced
in one of the previous commits.

Signed-off-by: Alexander Goncharov <chat@joursoir.net>
Change-Id: I5a316687ab39a112d968eeaedb71f7b4b659d8d5
Reviewed-on: https://review.coreboot.org/c/flashrom/+/69873
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Anastasia Klimchuk <aklm@chromium.org>
---
M tests/io_mock.h
M tests/libusb_wraps.c
2 files changed, 28 insertions(+), 0 deletions(-)

diff --git a/tests/io_mock.h b/tests/io_mock.h
index 644da74..3af5de4 100644
--- a/tests/io_mock.h
+++ b/tests/io_mock.h
@@ -99,6 +99,10 @@
 						uint8_t config_index,
 						struct libusb_config_descriptor **);
 	void (*libusb_free_config_descriptor)(void *state, struct libusb_config_descriptor *);
+	struct libusb_transfer* (*libusb_alloc_transfer)(void *state, int iso_packets);
+	int (*libusb_submit_transfer)(void *state, struct libusb_transfer *transfer);
+	void (*libusb_free_transfer)(void *state, struct libusb_transfer *transfer);
+	int (*libusb_handle_events_timeout)(void *state, libusb_context *ctx, struct timeval *tv);
 
 	/* POSIX File I/O */
 	int (*iom_open)(void *state, const char *pathname, int flags);
diff --git a/tests/libusb_wraps.c b/tests/libusb_wraps.c
index a05cbe9..be990a1 100644
--- a/tests/libusb_wraps.c
+++ b/tests/libusb_wraps.c
@@ -188,23 +188,31 @@
 struct libusb_transfer *__wrap_libusb_alloc_transfer(int iso_packets)
 {
 	LOG_ME;
+	if (get_io() && get_io()->libusb_alloc_transfer)
+		return get_io()->libusb_alloc_transfer(get_io()->state, iso_packets);
 	return not_null();
 }
 
 int __wrap_libusb_submit_transfer(struct libusb_transfer *transfer)
 {
 	LOG_ME;
+	if (get_io() && get_io()->libusb_submit_transfer)
+		return get_io()->libusb_submit_transfer(get_io()->state, transfer);
 	return 0;
 }
 
 void __wrap_libusb_free_transfer(struct libusb_transfer *transfer)
 {
 	LOG_ME;
+	if (get_io() && get_io()->libusb_free_transfer)
+		get_io()->libusb_free_transfer(get_io()->state, transfer);
 }
 
 int __wrap_libusb_handle_events_timeout(libusb_context *ctx, struct timeval *tv)
 {
 	LOG_ME;
+	if (get_io() && get_io()->libusb_handle_events_timeout)
+		get_io()->libusb_handle_events_timeout(get_io()->state, ctx, tv);
 	return 0;
 }
 

