Import of the watch repository from Pebble

tests/fakes/fake_rtc.h

@@ -0,0 +1,33 @@
+/*
+ * 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.
+ */
+
+#pragma once
+
+#include "drivers/rtc.h"
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <time.h>
+
+void fake_rtc_init(RtcTicks initial_ticks, time_t initial_time);
+
+void fake_rtc_increment_time(time_t inc);
+void fake_rtc_increment_time_ms(uint32_t inc);
+void fake_rtc_set_ticks(RtcTicks new_ticks);
+void fake_rtc_increment_ticks(RtcTicks tick_increment);
+void fake_rtc_auto_increment_ticks(RtcTicks tick_increment);
+
+// TODO: there is a lot of stuff missing.