Changeset 16757 for trunk/HeuristicLab.Tests/HeuristicLab.Problems.DataAnalysis.Symbolic-3.4/IntervalInterpreterTest.cs

Timestamp:

04/04/19 13:20:34 (5 years ago)

Author:

gkronber

Message:

#2966: fixed bug in interval calculation for cos(x) and added/fixed unit tests for sin and cos

File:

• trunk/HeuristicLab.Tests/HeuristicLab.Problems.DataAnalysis.Symbolic-3.4/IntervalInterpreterTest.cs (modified) (2 diffs)

trunk/HeuristicLab.Tests/HeuristicLab.Problems.DataAnalysis.Symbolic-3.4/IntervalInterpreterTest.cs

@@ -79 +79 @@
       EvaluateTest("sin(x1+x2)", new Interval(-1, 1), variableRanges);
       EvaluateTest("sin(1+2)", new Interval(Math.Sin(3), Math.Sin(3)));
+
+      var localVarRanges = new Dictionary<string, Interval>();
+      localVarRanges.Add("x1", new Interval(-1, 1));
+      localVarRanges.Add("x2", new Interval(-(Math.PI / 2), 0));
+      localVarRanges.Add("x3", new Interval(0, Math.PI / 2));
+      localVarRanges.Add("x4", new Interval(-Math.PI, Math.PI));
+      localVarRanges.Add("x5", new Interval(Math.PI/4, Math.PI*3.0/4));
+
+      EvaluateTest("sin(x1)", new Interval(Math.Sin(-1), Math.Sin(1)), localVarRanges);
+      EvaluateTest("sin(x2)", new Interval(-1, 0), localVarRanges);
+      EvaluateTest("sin(x3)", new Interval(0, 1), localVarRanges);
+      EvaluateTest("sin(x4)", new Interval(-1, 1), localVarRanges);
+      EvaluateTest("sin(x5)", new Interval(Math.Sin(Math.PI/4), 1), localVarRanges);
     }
 
@@ -87 +100 @@
       EvaluateTest("cos(x1+x2)", new Interval(-1, 1));
       EvaluateTest("cos(x1+x2)", new Interval(-1, 1), variableRanges);
-      EvaluateTest("cos(1+2)", new Interval(Math.Sin(3 - Math.PI / 2), Math.Sin(3 - Math.PI / 2)));
+      EvaluateTest("cos(1+2)", new Interval(Math.Sin(3 + Math.PI / 2), Math.Sin(3 + Math.PI / 2)));
+
+      var localVarRanges = new Dictionary<string, Interval>();
+      localVarRanges.Add("x1", new Interval(-1, 1));
+      localVarRanges.Add("x2", new Interval(-(Math.PI / 2), 0));
+      localVarRanges.Add("x3", new Interval(0, Math.PI / 2));
+      localVarRanges.Add("x4", new Interval(-Math.PI, Math.PI));
+      localVarRanges.Add("x5", new Interval(Math.PI / 4, Math.PI * 3.0 / 4));
+
+      EvaluateTest("cos(x1)", new Interval(Math.Cos(-1), 1), localVarRanges);
+      EvaluateTest("cos(x2)", new Interval(0, 1), localVarRanges);
+      EvaluateTest("cos(x3)", new Interval(0, 1), localVarRanges);
+      EvaluateTest("cos(x4)", new Interval(-1, 1), localVarRanges);
+      EvaluateTest("cos(x5)", new Interval(Math.Cos(Math.PI *3.0/ 4), Math.Cos(Math.PI/ 4)), localVarRanges);
+
     }