Import of the watch repository from Pebble

tests/fakes/fake_battery.c

@@ -0,0 +1,62 @@
+/*
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "fake_battery.h"
+#include "kernel/events.h"
+
+static int s_millivolts = 0;
+static bool s_usb_connected = false;
+static bool s_charging = false;
+
+void fake_battery_init(int millivolts, bool usb_connected, bool charging) {
+  s_millivolts = millivolts;
+  s_usb_connected = usb_connected;
+  s_charging = charging;
+}
+
+void fake_battery_set_millivolts(int millivolts) {
+  s_millivolts = millivolts;
+}
+
+void fake_battery_set_connected(bool usb_connected) {
+  s_usb_connected = usb_connected;
+
+  // Trigger a connection event!
+  PebbleEvent event = {
+    .type = PEBBLE_BATTERY_CONNECTION_EVENT,
+    .battery_connection = {
+      .is_connected = usb_connected,
+    }
+  };
+
+  event_put(&event);
+}
+
+void fake_battery_set_charging(bool charging) {
+  s_charging = charging;
+}
+
+int battery_get_millivolts(void) {
+  return s_millivolts;
+}
+
+bool battery_is_usb_connected(void) {
+  return s_usb_connected;
+}
+
+bool battery_charge_controller_thinks_we_are_charging(void) {
+  return s_charging;
+}