Update LocalSolPS test

src/gtest/test_metrics.cpp

@@ -6,7 +6,7 @@
 
 TEST(Metrics, GetLocalSolPS) {
     SetMockTime(100);
-    MarkStartTime();
+    miningTimer.start();
 
     // No time has passed
     EXPECT_EQ(0, GetLocalSolPS());
@@ -27,4 +27,20 @@ TEST(Metrics, GetLocalSolPS) {
     solutionTargetChecks.increment();
     solutionTargetChecks.increment();
     EXPECT_EQ(1.5, GetLocalSolPS());
+
+    // Stop timing
+    miningTimer.stop();
+    EXPECT_EQ(1.5, GetLocalSolPS());
+
+    // Increment time
+    SetMockTime(103);
+    EXPECT_EQ(1.5, GetLocalSolPS());
+
+    // Start timing again
+    miningTimer.start();
+    EXPECT_EQ(1.5, GetLocalSolPS());
+
+    // Increment time
+    SetMockTime(104);
+    EXPECT_EQ(1, GetLocalSolPS());
 }