usb_pe_drp: new unit test with mocks

Add a new unit test for usb_pe_drp with mocks for the various
subsystems that it will use.
The fake_prl module is already essentially a mock for the PRL layer,
so just move it into the mocks directory and make it available as
mock to other tests.

BUG=b:163421994
BRANCH=None
TEST=`make runhosttests` succeeds

Signed-off-by: Paul Fagerburg <pfagerburg@google.com>
Change-Id: I2aea3fa0694e8d9e6bae1f47516cb4d5d2a1e714
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2364050
Tested-by: Paul Fagerburg <pfagerburg@chromium.org>
Reviewed-by: Jett Rink <jettrink@chromium.org>
Commit-Queue: Paul Fagerburg <pfagerburg@chromium.org>

1 files changed, 56 insertions, 0 deletions

diff --git a/test/usb_pe_drp.c b/test/usb_pe_drp.c
new file mode 100644
index 0000000000..b210db4ae9
--- /dev/null
+++ b/test/usb_pe_drp.c
@@ -0,0 +1,56 @@
+/* Copyright 2020 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 USB PE module.
+ */
+#include "common.h"
+#include "task.h"
+#include "test_util.h"
+#include "timer.h"
+#include "usb_emsg.h"
+#include "usb_mux.h"
+#include "usb_pe.h"
+#include "usb_pe_sm.h"
+#include "usb_sm_checks.h"
+#include "mock/usb_tc_sm_mock.h"
+#include "mock/tcpc_mock.h"
+#include "mock/usb_mux_mock.h"
+#include "mock/usb_pd_mock.h"
+#include "mock/usb_pd_dpm_mock.h"
+#include "mock/dp_alt_mode_mock.h"
+#include "mock/usb_prl_mock.h"
+
+/* Install Mock TCPC and MUX drivers */
+const struct tcpc_config_t tcpc_config[CONFIG_USB_PD_PORT_MAX_COUNT] = {
+	{
+		.drv = &mock_tcpc_driver,
+	},
+};
+
+const struct usb_mux usb_muxes[CONFIG_USB_PD_PORT_MAX_COUNT] = {
+	{
+		.driver = &mock_usb_mux_driver,
+	}
+};
+
+void before_test(void)
+{
+	mock_tc_port_reset();
+	mock_tcpc_reset();
+	mock_usb_mux_reset();
+	mock_pd_reset();
+	mock_dpm_reset();
+	mock_dp_alt_mode_reset();
+	mock_prl_reset();
+}
+
+void run_test(int argc, char **argv)
+{
+	test_reset();
+
+	/* Do basic state machine validity checks last. */
+	RUN_TEST(test_pe_no_parent_cycles);
+
+	test_print_result();
+}