Added utility unit tests

src/tests/CMakeLists.txt

@@ -1,6 +1,6 @@
 enable_testing()
 
-ADD_EXECUTABLE( unittests runtests.cpp  )
+ADD_EXECUTABLE( unittests test_api.cpp test_utility.cpp  )
 
 TARGET_LINK_LIBRARIES(unittests
 

src/tests/test_utility.cpp

@@ -0,0 +1,38 @@
+/* 
+ * File:   utility_tests.cpp
+ * Author: mhill
+ *
+ * Created on October 23, 2014, 10:16 PM
+ */
+
+#include <cstdlib>
+#include "utility.h"
+#include "catch.hpp"
+
+using namespace std;
+using namespace cv;
+
+
+
+TEST_CASE( "LineSegment Test", "[2d primitives]" ) {
+
+  // Test a flat horizontal line
+  LineSegment flat_horizontal(1,1, 21,1);
+  REQUIRE( flat_horizontal.angle == 0 );
+  REQUIRE( flat_horizontal.slope == 0 );
+  REQUIRE( flat_horizontal.length == 20 );
+  REQUIRE( flat_horizontal.midpoint().y == 1 );
+  REQUIRE( flat_horizontal.midpoint().x == 11 );
+  REQUIRE( flat_horizontal.getPointAt(11) == 1 );
+  
+  // Test distance between points calculation
+  REQUIRE( distanceBetweenPoints(Point(10,10), Point(20,20)) == Approx(14.1421) );
+  REQUIRE( distanceBetweenPoints(Point(-5,10), Point(20,-12)) == Approx(33.3017) );
+  
+  int testarray1[] = {1, 2, 3, 3, 4, 5 };
+  int testarray2[] = {0, 2, -3, 3, -4, 5 };
+  int testarray3[] = { };
+  REQUIRE( median(testarray1, 6) == 3 );
+  REQUIRE( median(testarray2, 6) == 1 );
+  REQUIRE( median(testarray3, 0) == 0 );
+}