statistic helper classes

test-cases
modified grid importance for better trap-detection

tests/grid/TestGridWalk2HeadingControl.cpp

@@ -30,6 +30,7 @@
 
 
 struct MyNode12456012 : public GridPoint, public GridNode {
+	float getWalkImportance() const {return 1;}
 	MyNode12456012() {;}
 	MyNode12456012(const int x, const int y, const int z) : GridPoint(x,y,z) {;}
 };

tests/grid/TestGridWalk2RelPressure.cpp

@@ -28,6 +28,7 @@
 
 
 struct MyNode124234 : public GridPoint, public GridNode {
+	float getWalkImportance() const {return 1;}
 	MyNode124234() {;}
 	MyNode124234(const int x, const int y, const int z) : GridPoint(x,y,z) {;}
 };

tests/math/TestStats.cpp

@@ -0,0 +1,92 @@
+#ifdef WITH_TESTS
+
+#include "../Tests.h"
+#include "../../math/Stats.h"
+
+using namespace Stats;
+
+TEST(Statistics, minimum) {
+
+	Minimum<float> min;
+
+	min.add(+999);
+	ASSERT_EQ(999, min.get());
+
+	min.add(1);
+	ASSERT_EQ(1, min.get());
+
+	min.add(2);
+	ASSERT_EQ(1, min.get());
+
+	min.add(0);
+	ASSERT_EQ(0, min.get());
+
+	min.add(-99);
+	ASSERT_EQ(-99, min.get());
+
+}
+
+TEST(Statistics, maximum) {
+
+	Maximum<float> max;
+
+	max.add(-999);
+	ASSERT_EQ(-999, max.get());
+
+	max.add(1);
+	ASSERT_EQ(1, max.get());
+
+	max.add(2);
+	ASSERT_EQ(2, max.get());
+
+	max.add(1);
+	ASSERT_EQ(2, max.get());
+
+	max.add(99);
+	ASSERT_EQ(99, max.get());
+
+}
+
+TEST(Statistics, median) {
+
+	Median<float> med;
+
+	ASSERT_THROW(med.get(), std::exception);
+
+	med.add(1);
+	ASSERT_EQ(1, med.get());
+
+	med.add(2);
+	ASSERT_EQ(1.5, med.get());
+
+	med.add(3);
+	ASSERT_EQ(2, med.get());
+
+	med.add(99);
+	ASSERT_EQ(2.5, med.get());
+
+
+}
+
+TEST(Statistics, average) {
+
+	Average<float> avg;
+
+	ASSERT_THROW(avg.get(), std::exception);
+
+	avg.add(1);
+	ASSERT_EQ(1, avg.get());
+
+	avg.add(2);
+	ASSERT_EQ(1.5, avg.get());
+
+	avg.add(3);
+	ASSERT_EQ(2, avg.get());
+
+	avg.add(99);
+	ASSERT_EQ(26.25, avg.get());
+
+}
+
+
+#endif