Import of the watch repository from Pebble

tests/fw/graphics/test_framebuffer.template.c

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+/*
+ * 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 "applib/graphics/graphics.h"
+#include "applib/graphics/framebuffer.h"
+
+#include "util/bitset.h"
+#include "util/size.h"
+#include "${BIT_DEPTH_NAME}/test_framebuffer.h"
+
+#include "clar.h"
+
+// Stubs
+////////////////////////////////////
+#include "graphics_common_stubs.h"
+#include "stubs_applib_resource.h"
+
+// Setup
+////////////////////////////////////
+static FrameBuffer framebuffer;
+
+// Tests
+////////////////////////////////////
+
+void test_framebuffer_${BIT_DEPTH_NAME}__framebuffer_clear(void) {
+  // clear the framebuffer
+  framebuffer_init(&framebuffer, &(GSize) { DISP_COLS, DISP_ROWS });
+  framebuffer_clear(&framebuffer);
+
+  // check the clearing
+#if SCREEN_COLOR_DEPTH_BITS == 1
+  for (int i = 0; i < ARRAY_LENGTH(framebuffer.buffer); i++) {
+    cl_assert(framebuffer.buffer[i] == 0xffffffff);
+  }
+#elif SCREEN_COLOR_DEPTH_BITS == 8
+  for (int i = 0; i < ARRAY_LENGTH(framebuffer.buffer); i++) {
+    cl_assert(framebuffer.buffer[i] == GColorWhite.argb);
+  }
+  GRect expected_dirty = GRect(0, 0, DISP_COLS, DISP_ROWS);
+#else
+  cl_assert(!memcmp(&framebuffer.dirty_rect, &expected_dirty, sizeof(GRect)));
+  cl_assert(false);
+#endif
+
+  cl_assert(framebuffer.is_dirty == true);
+}