[ML][TEST] Fix event rate test with rule

Relates #171

Author: dimitris-athanasiou

lib/model/unittest/CEventRateModelTest.cc

@@ -2503,7 +2503,8 @@ void CEventRateModelTest::testComputeProbabilityGivenDetectionRule() {
 
     SAnnotatedProbability annotatedProbability;
     CPPUNIT_ASSERT(model->computeProbability(0 /*pid*/, now, now + bucketLength, partitioningFields,
-                                             1, annotatedProbability) == false);
+                                             1, annotatedProbability));
+    CPPUNIT_ASSERT_DOUBLES_EQUAL(annotatedProbability.s_Probability, 1.0, 0.00001);
 }
 
 void CEventRateModelTest::testDecayRateControl() {
@@ -2579,7 +2580,7 @@ void CEventRateModelTest::testDecayRateControl() {
                   << maths::CBasicStatistics::mean(meanReferencePredictionError));
         CPPUNIT_ASSERT_DOUBLES_EQUAL(
             maths::CBasicStatistics::mean(meanReferencePredictionError),
-            maths::CBasicStatistics::mean(meanPredictionError), 0.05);
+            maths::CBasicStatistics::mean(meanPredictionError), 0.01);
     }
 
     LOG_DEBUG(<< "*** Test linear scaling ***");