diff --git a/google-tests/test3.cpp b/google-tests/test3.cpp
index 78cfd7c..487b882 100644
--- a/google-tests/test3.cpp
+++ b/google-tests/test3.cpp
@@ -81,19 +81,26 @@ TEST(SignalTest, ranges) {
 class DebugRunningQuality : public RunningQuality {
 protected:
     virtual void dispatchLocked() { locked = true; }
-    virtual void dispatchBeat(int idx, bool good, double posCorr) { goods.push_back(good); corrs.push_back(posCorr); }
+    virtual void dispatchBeat(int idx, bool good, double posCorr) {
+        if (locked && lockedAt == -1)
+            lockedAt = idx;
+        goods.push_back(good);
+        corrs.push_back(posCorr);
+    }
 
+    int lockedAt;
     bool locked;
     std::vector<double> corrs;
     std::vector<bool> goods;
 
 public:
-    DebugRunningQuality(): locked(false) {}
+    DebugRunningQuality(): lockedAt(-1), locked(false) {}
     explicit DebugRunningQuality(bool disableSsf): RunningQuality(disableSsf), locked(false) {}
     virtual ~DebugRunningQuality() {}
     bool isLocked() { return locked; }
     std::vector<double> getCorrs() { return corrs; }
     std::vector<bool> getGoods() { return goods; }
+    int getLockedAt() { return lockedAt; }
     std::vector<double> getBeatTemplate() { return this->beatTemplate; }
 };
 
@@ -210,6 +217,9 @@ TEST(SignalTest, RunningQuality_t2) {
     EXPECT_TRUE(sqi.isLocked());
     EXPECT_TRUE(sqi.getCorrs().size() > 50);
 
+    EXPECT_TRUE(sqi.getLockedAt() < 10);
+    std::cout << "lockedAt=" << sqi.getLockedAt() << std::endl;
+
     std::vector<double> corrs(sqi.getCorrs());
     npy_save("test3/ssf_t3_sqi_corrs.npy", corrs);