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test/native/gc/g1/test_g1Predictions.cpp

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rev 11782 : 8164028: Convert TestPredictions_test to GTest
Reviewed-by: duke

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.

@@ -22,77 +22,77 @@
  *
  */
 
 #include "precompiled.hpp"
 #include "gc/g1/g1Predictions.hpp"
+#include "unittest.hpp"
 
-#ifndef PRODUCT
+static const double epsilon = 1e-6;
 
-void G1Predictions::test() {
-  double const epsilon = 1e-6;
-  {
-    // Some basic formula tests with confidence = 0.0
+// Some basic formula tests with confidence = 0.0
+TEST_VM(G1Predictions, basic_predictions) {
     G1Predictions predictor(0.0);
     TruncatedSeq s;
 
     double p0 = predictor.get_new_prediction(&s);
-    assert(p0 < epsilon, "Initial prediction of empty sequence must be 0.0 but is %f", p0);
+  ASSERT_LT(p0, epsilon) << "Initial prediction of empty sequence must be 0.0";
 
     s.add(5.0);
     double p1 = predictor.get_new_prediction(&s);
-    assert(fabs(p1 - 5.0) < epsilon, "Prediction should be 5.0 but is %f", p1);
+  ASSERT_NEAR(p1, 5.0, epsilon);
+
     for (int i = 0; i < 40; i++) {
       s.add(5.0);
     }
     double p2 = predictor.get_new_prediction(&s);
-    assert(fabs(p2 - 5.0) < epsilon, "Prediction should be 5.0 but is %f", p1);
-  }
+  ASSERT_NEAR(p2, 5.0, epsilon);
+}
 
-  {
-    // The following tests checks that the initial predictions are based on the
-    // average of the sequence and not on the stddev (which is 0).
+// The following tests checks that the initial predictions are based on
+// the average of the sequence and not on the stddev (which is 0).
+TEST_VM(G1Predictions, average_not_stdev_predictions) {
     G1Predictions predictor(0.5);
     TruncatedSeq s;
 
     s.add(1.0);
     double p1 = predictor.get_new_prediction(&s);
-    assert(p1 > 1.0, "First prediction must be larger than average, but avg is %f and prediction %f", s.davg(), p1);
+  ASSERT_GT(p1, s.davg()) << "First prediction must be greater than average";
+
     s.add(1.0);
     double p2 = predictor.get_new_prediction(&s);
-    assert(p2 < p1, "First prediction must be larger than second, but they are %f %f", p1, p2);
+  ASSERT_GT(p1, p2) << "First prediction must be greater than second";
+
     s.add(1.0);
     double p3 = predictor.get_new_prediction(&s);
-    assert(p3 < p2, "Second prediction must be larger than third, but they are %f %f", p2, p3);
+  ASSERT_GT(p2, p3) << "Second prediction must be greater than third";
+
     s.add(1.0);
     s.add(1.0); // Five elements are now in the sequence.
-    double p5 = predictor.get_new_prediction(&s);
-    assert(p5 < p3, "Fifth prediction must be smaller than third, but they are %f %f", p3, p5);
-    assert(fabs(p5 - 1.0) < epsilon, "Prediction must be 1.0+epsilon, but is %f", p5);
-  }
+  double p4 = predictor.get_new_prediction(&s);
+  ASSERT_LT(p4, p3) << "Fourth prediction must be smaller than third";
+  ASSERT_NEAR(p4, 1.0, epsilon);
+}
 
-  {
-    // The following tests checks that initially prediction based on the average is
-    // used, that gets overridden by the stddev prediction at the end.
+// The following tests checks that initially prediction based on
+// the average is used, that gets overridden by the stddev prediction at
+// the end.
+TEST_VM(G1Predictions, average_stdev_predictions) {
     G1Predictions predictor(0.5);
     TruncatedSeq s;
 
     s.add(0.5);
     double p1 = predictor.get_new_prediction(&s);
-    assert(p1 > 0.5, "First prediction must be larger than average, but avg is %f and prediction %f", s.davg(), p1);
+  ASSERT_GT(p1, s.davg()) << "First prediction must be greater than average";
+
     s.add(0.2);
     double p2 = predictor.get_new_prediction(&s);
-    assert(p2 < p1, "First prediction must be larger than second, but they are %f %f", p1, p2);
+  ASSERT_GT(p1, p2) << "First prediction must be greater than second";
+
     s.add(0.5);
     double p3 = predictor.get_new_prediction(&s);
-    assert(p3 < p2, "Second prediction must be larger than third, but they are %f %f", p2, p3);
+  ASSERT_GT(p2, p3) << "Second prediction must be greater than third";
+
     s.add(0.2);
     s.add(2.0);
-    double p5 = predictor.get_new_prediction(&s);
-    assert(p5 > p3, "Fifth prediction must be bigger than third, but they are %f %f", p3, p5);
-  }
+  double p4 = predictor.get_new_prediction(&s);
+  ASSERT_GT(p4, p3) << "Fourth prediction must be greater than third";
 }
-
-void TestPredictions_test() {
-  G1Predictions::test();
-}
-
-#endif
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