zephyr: test: migrate drivers test to twister

1. Move the common test logic to drivers/common with its own
   CMakeLists.txt
2. Move the drivers test suites to drivers/default with its own
   CMakeLists.txt
3. Add a Kconfig for each suite that can enable it, use Zephyr's
   add_subdirectory_ifdef to control which suites get added to the
   biary and verify that at least 1 suite was added.
4. Add a check for ZMAKE_PROJECT_NAME to still allow zmake commands
5. Add testcase.yaml which runs all the tests

BRANCH=none
BUG=b:240093007
TEST=./twister --coverage -p native_posix -T zephyr/test/drivers

Signed-off-by: Yuval Peress <peress@google.com>
Change-Id: Ib9d4ea4a8431539391cc5349a7a8fd7a7d21f120
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3784043
Reviewed-by: Tristan Honscheid <honscheid@google.com>
Commit-Queue: Tristan Honscheid <honscheid@google.com>

1 files changed, 58 insertions, 0 deletions

diff --git a/zephyr/test/drivers/default/src/charge_manager.c b/zephyr/test/drivers/default/src/charge_manager.c
new file mode 100644
index 0000000000..13668924fd
--- /dev/null
+++ b/zephyr/test/drivers/default/src/charge_manager.c
@@ -0,0 +1,58 @@
+/* Copyright 2022 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.
+ */
+
+#include <ztest.h>
+
+#include "charge_manager.h"
+#include "ec_commands.h"
+#include "test/drivers/test_state.h"
+
+ZTEST_SUITE(charge_manager, drivers_predicate_post_main, NULL, NULL, NULL,
+	    NULL);
+
+/**
+ * Test the default implementation of board_fill_source_power_info(). The fill
+ * function should reset all the power info values. If the test binary overrides
+ * board_fill_source_power_info(), then this test can be removed.
+ */
+ZTEST_USER(charge_manager, test_default_fill_power_info)
+{
+	struct ec_response_usb_pd_power_info info = {
+		.meas = {
+			.voltage_now = 10,
+			.voltage_max = 10,
+			.current_max = 10,
+			.current_lim = 10,
+		},
+		.max_power = 10,
+	};
+
+	board_fill_source_power_info(0, &info);
+	zassert_equal(info.meas.voltage_now, 0, NULL);
+	zassert_equal(info.meas.voltage_max, 0, NULL);
+	zassert_equal(info.meas.current_max, 0, NULL);
+	zassert_equal(info.meas.current_lim, 0, NULL);
+	zassert_equal(info.max_power, 0, NULL);
+}
+
+/**
+ * Test the default implementation of board_charge_port_is_connected(). This
+ * function should always return 1 regardless of input.
+ */
+ZTEST_USER(charge_manager, test_default_charge_port_is_connected)
+{
+	zassert_true(board_charge_port_is_connected(-1), NULL);
+	zassert_true(board_charge_port_is_connected(0), NULL);
+	zassert_true(board_charge_port_is_connected(1), NULL);
+	zassert_true(board_charge_port_is_connected(500), NULL);
+}
+
+ZTEST_USER(charge_manager, test_default_charge_port_is_sink)
+{
+	zassert_true(board_charge_port_is_sink(-1), NULL);
+	zassert_true(board_charge_port_is_sink(0), NULL);
+	zassert_true(board_charge_port_is_sink(1), NULL);
+	zassert_true(board_charge_port_is_sink(500), NULL);
+}