Add DeepState_TakeOver() interface

src/include/deepstate/DeepState.h

@@ -309,6 +309,8 @@ struct DeepState_TestInfo {
 /* Pointer to the last registered `TestInfo` structure. */
 extern struct DeepState_TestInfo *DeepState_LastTestInfo;
 
+extern int DeepState_TakeOver(void);
+
 /* Defines the entrypoint of a test case. This creates a data structure that
  * contains the information about the test, and then creates an initializer
  * function that runs before `main` that registers the test entrypoint with

src/lib/DeepState.c

@@ -364,6 +364,19 @@ void DrMemFuzzFunc(volatile uint8_t *buff, size_t size) {
   }
 }
 
+int DeepState_TakeOver(void) {
+  struct DeepState_TestInfo test = {
+    .prev = NULL,
+    .test_func = NULL,
+    .test_name = "<__TAKE_OVER_TEST>",
+    .file_name = "<__TAKE_OVER_FILE>",
+    .line_number = 0,
+  };
+  DeepState_Begin(&test);
+
+  return 0;
+}
+
 /* Notify that we're about to begin a test while running under Dr. Fuzz. */
 void DeepState_BeginDrFuzz(struct DeepState_TestInfo *test) {
   DeepState_DrFuzzTest = test;