Add unit test for usb_pd

Initial commit of usb_pd unit test. The test cases are very simple.
We'll add more test cases in similar format.

BUG=chrome-os-partner:31200
TEST=Pass usb_pd test
BRANCH=None

Change-Id: I9e3de5b2c032ee1d3670cde6d8227ce0378ae8a0
Signed-off-by: Vic Yang <victoryang@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/211643
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>

1 files changed, 31 insertions, 0 deletions

diff --git a/test/usb_pd_test_util.h b/test/usb_pd_test_util.h
new file mode 100644
index 0000000000..5be8e0984a
--- /dev/null
+++ b/test/usb_pd_test_util.h
@@ -0,0 +1,31 @@
+/* Copyright 2014 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ *
+ * Test utilities for USB PD unit test.
+ */
+
+#ifndef __USB_PD_TEST_UTIL_H
+#define __USB_PD_TEST_UTIL_H
+
+/* Simulate Rx message */
+void pd_test_rx_set_preamble(int port, int has_preamble);
+void pd_test_rx_msg_append_bits(int port, uint32_t bits, int nb);
+void pd_test_rx_msg_append_kcode(int port, uint8_t kcode);
+void pd_test_rx_msg_append_sop(int port);
+void pd_test_rx_msg_append_eop(int port);
+void pd_test_rx_msg_append_4b(int port, uint8_t val);
+void pd_test_rx_msg_append_short(int port, uint16_t val);
+void pd_test_rx_msg_append_word(int port, uint32_t val);
+void pd_simulate_rx(int port);
+
+/* Verify Tx message */
+int pd_test_tx_msg_verify_kcode(int port, uint8_t kcode);
+int pd_test_tx_msg_verify_sop(int port);
+int pd_test_tx_msg_verify_eop(int port);
+int pd_test_tx_msg_verify_4b5b(int port, uint8_t b4);
+int pd_test_tx_msg_verify_short(int port, uint16_t val);
+int pd_test_tx_msg_verify_word(int port, uint32_t val);
+int pd_test_tx_msg_verify_crc(int port);
+
+#endif  /* __USB_PD_TEST_UTIL_H */