Changeset 17293

Timestamp:

10/02/19 17:03:17 (3 years ago)

Author:

gkronber

Message:

#2994: another unit test for interval arithmetic

Location:

branches/2994-AutoDiffForIntervals/HeuristicLab.Tests

Files:

• HeuristicLab.Problems.DataAnalysis-3.4/AutoDiffIntervalTest.cs (modified) (3 diffs)
• HeuristicLab.Problems.DataAnalysis.Symbolic-3.4/AutoDiffIntervalInterpreterTest.cs (modified) (1 diff)

branches/2994-AutoDiffForIntervals/HeuristicLab.Tests/HeuristicLab.Problems.DataAnalysis-3.4/AutoDiffIntervalTest.cs

@@ -1 +1 @@
 using System;
+using System.Collections.Generic;
 using HeuristicLab.Problems.DataAnalysis.Symbolic;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
@@ -31 +32 @@
         Assert.IsTrue(double.IsNaN(b.LowerBound.Value));
       } else {
-        Assert.AreEqual(a.LowerBound.Value.Value, b.LowerBound.Value.Value, 1e-10);
+        Assert.AreEqual(a.LowerBound.Value.Value, b.LowerBound.Value.Value, Math.Abs(a.LowerBound.Value.Value)*1e-4); // relative error < 0.1%
       }
 
@@ -37 +38 @@
         Assert.IsTrue(double.IsNaN(b.UpperBound.Value));
       } else {
-        Assert.AreEqual(a.UpperBound.Value.Value, b.UpperBound.Value.Value, 1e-10);
+        Assert.AreEqual(a.UpperBound.Value.Value, b.UpperBound.Value.Value, Math.Abs(a.UpperBound.Value.Value) * 1e-4);
       }
     }

branches/2994-AutoDiffForIntervals/HeuristicLab.Tests/HeuristicLab.Problems.DataAnalysis.Symbolic-3.4/AutoDiffIntervalInterpreterTest.cs

@@ -209 +209 @@
       EvaluateTest("sqr(R/r)", new Interval(0.2 * 0.2 / (0.8 * 0.8), 0.5 * 0.5 / (0.5 * 0.5)), dataIntervals);
     }
+
+
+
+    [TestMethod]
+    [TestCategory("Problems.DataAnalysis")]
+    [TestProperty("Time", "short")]
+    public void TestExpressions() {
+      var parser = new InfixExpressionParser();
+      var evaluator = new IntervalEvaluator();
+      var intervals = new Dictionary<string, Interval>() {
+        {"x", new Interval(1, 2) }
+      };
+
+      var t = parser.Parse("SQR(EXP(CUBE((2.10981074965936*'x'))))");
+      var r = evaluator.Evaluate(t, intervals);
+      AssertInterval(143638040.396283, 1.81198989971641E+65, r);
+    }
+
+    private void AssertInterval(double expectedLow, double expectedHigh, Interval r) {
+      Assert.AreEqual(expectedLow, r.LowerBound, Math.Abs(expectedLow * 1e-5));
+      Assert.AreEqual(expectedHigh, r.UpperBound, Math.Abs(expectedHigh* 1e-5));
+    }
   }
 }