feat: 添加屏幕去重功能并调整测试用例目录结构

tests/backend/output_utils_test.c

@@ -0,0 +1,63 @@
+#include <assert.h>
+#include <stdint.h>
+
+#include "backend/output_utils.h"
+#include "utils.h"
+
+static void assert_output_geometry(const wm_output_info_t *output, int32_t x,
+                                   int32_t y, int32_t width,
+                                   int32_t height) {
+  assert(output);
+  assert(output->geometry.x == x);
+  assert(output->geometry.y == y);
+  assert(output->geometry.width == width);
+  assert(output->geometry.height == height);
+}
+
+static void destroy_detect_result(wm_backend_detect_t *detect) {
+  assert(detect);
+  for (size_t i = 0; i < detect->output_count; i++) {
+    p_delete(&detect->outputs[i].name);
+  }
+  p_delete(&detect->outputs);
+  free(detect);
+}
+
+static void test_output_remove_duplication_invalid_input(void) {
+  wm_output_info_t output = {0};
+
+  assert(output_remove_duplication(nullptr, 0) == nullptr);
+  assert(output_remove_duplication(&output, 0) == nullptr);
+}
+
+static void test_output_remove_duplication_keeps_non_nested_outputs(void) {
+  wm_output_info_t outputs[] = {
+    {
+      .geometry = {.x = 0, .y = 0, .width = 3840, .height = 1080},
+    },
+    {
+      .geometry = {.x = 0, .y = 0, .width = 1920, .height = 1080},
+    },
+    {
+      .geometry = {.x = 1920, .y = 0, .width = 1920, .height = 1080},
+    },
+    {
+      .geometry = {.x = 3840, .y = 0, .width = 1280, .height = 1024},
+    },
+  };
+
+  wm_backend_detect_t *detect =
+    output_remove_duplication(outputs, countof(outputs));
+  assert(detect);
+  assert(detect->output_count == 2);
+  assert_output_geometry(&detect->outputs[0], 0, 0, 3840, 1080);
+  assert_output_geometry(&detect->outputs[1], 3840, 0, 1280, 1024);
+
+  destroy_detect_result(detect);
+}
+
+int main(void) {
+  test_output_remove_duplication_invalid_input();
+  test_output_remove_duplication_keeps_non_nested_outputs();
+  return 0;
+}