Add UnitTest for DP

Conflicts:
	CMakeLists.txt

CMakeLists.txt

@@ -41,7 +41,7 @@ add_custom_command(OUTPUT ${CMAKE_SOURCE_DIR}/Util/FingerPrint.cpp FingerPrint.c
   VERBATIM)
 
 add_custom_target(FingerPrintConfigure DEPENDS ${CMAKE_SOURCE_DIR}/Util/FingerPrint.cpp)
-add_custom_target(tests DEPENDS datastructure-tests)
+add_custom_target(tests DEPENDS datastructure-tests algorithm-tests)
 add_custom_target(benchmarks DEPENDS rtree-bench)
 
 set(BOOST_COMPONENTS date_time filesystem iostreams program_options regex system thread unit_test_framework)
@@ -72,6 +72,7 @@ file(GLOB AlgorithmGlob Algorithms/*.cpp)
 file(GLOB HttpGlob Server/Http/*.cpp)
 file(GLOB LibOSRMGlob Library/*.cpp)
 file(GLOB DataStructureTestsGlob UnitTests/DataStructures/*.cpp DataStructures/HilbertValue.cpp)
+file(GLOB AlgorithmTestsGlob UnitTests/Algorithms/*.cpp)
 
 set(
   OSRMSources
@@ -93,6 +94,7 @@ add_executable(osrm-datastore datastore.cpp $<TARGET_OBJECTS:COORDINATE> $<TARGE
 
 # Unit tests
 add_executable(datastructure-tests EXCLUDE_FROM_ALL UnitTests/datastructure_tests.cpp ${DataStructureTestsGlob} $<TARGET_OBJECTS:COORDINATE> $<TARGET_OBJECTS:LOGGER> $<TARGET_OBJECTS:PHANTOMNODE>)
+add_executable(algorithm-tests EXCLUDE_FROM_ALL UnitTests/algorithm_tests.cpp ${AlgorithmTestsGlob} $<TARGET_OBJECTS:COORDINATE> $<TARGET_OBJECTS:LOGGER> $<TARGET_OBJECTS:PHANTOMNODE>)
 
 # Benchmarks
 add_executable(rtree-bench EXCLUDE_FROM_ALL Benchmarks/StaticRTreeBench.cpp $<TARGET_OBJECTS:COORDINATE> $<TARGET_OBJECTS:LOGGER> $<TARGET_OBJECTS:PHANTOMNODE>)
@@ -195,6 +197,7 @@ target_link_libraries(osrm-prepare ${Boost_LIBRARIES})
 target_link_libraries(osrm-routed ${Boost_LIBRARIES} ${OPTIONAL_SOCKET_LIBS} OSRM)
 target_link_libraries(osrm-datastore ${Boost_LIBRARIES})
 target_link_libraries(datastructure-tests ${Boost_LIBRARIES})
+target_link_libraries(algorithm-tests ${Boost_LIBRARIES} ${OPTIONAL_SOCKET_LIBS} OSRM)
 target_link_libraries(rtree-bench ${Boost_LIBRARIES})
 
 find_package(Threads REQUIRED)
@@ -203,6 +206,7 @@ target_link_libraries(osrm-datastore ${CMAKE_THREAD_LIBS_INIT})
 target_link_libraries(osrm-prepare ${CMAKE_THREAD_LIBS_INIT})
 target_link_libraries(OSRM ${CMAKE_THREAD_LIBS_INIT})
 target_link_libraries(datastructure-tests ${CMAKE_THREAD_LIBS_INIT})
+target_link_libraries(algorithm-tests ${CMAKE_THREAD_LIBS_INIT})
 target_link_libraries(rtree-bench ${CMAKE_THREAD_LIBS_INIT})
 
 find_package(TBB REQUIRED)
@@ -214,6 +218,7 @@ target_link_libraries(osrm-extract ${TBB_LIBRARIES})
 target_link_libraries(osrm-prepare ${TBB_LIBRARIES})
 target_link_libraries(osrm-routed ${TBB_LIBRARIES})
 target_link_libraries(datastructure-tests ${TBB_LIBRARIES})
+target_link_libraries(algorithm-tests ${TBB_LIBRARIES})
 target_link_libraries(rtree-bench ${TBB_LIBRARIES})
 include_directories(${TBB_INCLUDE_DIR})
 

UnitTests/Algorithms/DouglasPeuckerTest.cpp

@@ -0,0 +1,83 @@
+#include "../../Algorithms/DouglasPeucker.h"
+#include "../../DataStructures/SegmentInformation.h"
+#include "../../Include/osrm/Coordinate.h"
+
+#include <boost/test/unit_test.hpp>
+#include <boost/test/test_case_template.hpp>
+#include <boost/mpl/list.hpp>
+
+#include <iostream>
+
+BOOST_AUTO_TEST_SUITE(douglas_peucker)
+
+SegmentInformation getTestInfo(int lat, int lon, bool necessary)
+{
+    return SegmentInformation(FixedPointCoordinate(lat, lon),
+                              0, 0, 0, TurnInstruction::HeadOn, necessary, false, 0);
+}
+
+BOOST_AUTO_TEST_CASE(all_necessary_test)
+{
+    /*
+     *     x
+     *    / \
+     *   x   \
+     *  /     \
+     * x       x
+     */
+    std::vector<SegmentInformation> info = {
+        getTestInfo(5, 5, true),
+        getTestInfo(6, 6, true),
+        getTestInfo(10, 10, true),
+        getTestInfo(5, 15, true)
+    };
+    DouglasPeucker dp;
+    for (unsigned z = 0; z < 20; z++)
+    {
+        dp.Run(info, z);
+        for (const auto& i : info)
+        {
+            BOOST_CHECK_EQUAL(i.necessary, true);
+        }
+    }
+}
+
+BOOST_AUTO_TEST_CASE(remove_second_node_test)
+{
+    DouglasPeucker dp;
+    for (unsigned z = 0; z < 19; z++)
+    {
+        /*
+         *   x--x
+         *   |   \
+         * x-x    x
+         *        |
+         *        x
+         */
+        std::vector<SegmentInformation> info = {
+            getTestInfo(5  * COORDINATE_PRECISION,
+                        5  * COORDINATE_PRECISION, true),
+            getTestInfo(5  * COORDINATE_PRECISION,
+                        5  * COORDINATE_PRECISION + DOUGLAS_PEUCKER_THRESHOLDS[z], false),
+            getTestInfo(10 * COORDINATE_PRECISION,
+                        10 * COORDINATE_PRECISION, false),
+            getTestInfo(10 * COORDINATE_PRECISION,
+                        10 + COORDINATE_PRECISION + DOUGLAS_PEUCKER_THRESHOLDS[z] * 2, false),
+            getTestInfo(5  * COORDINATE_PRECISION,
+                        15 * COORDINATE_PRECISION, false),
+            getTestInfo(5  * COORDINATE_PRECISION + DOUGLAS_PEUCKER_THRESHOLDS[z],
+                        15 * COORDINATE_PRECISION, true),
+        };
+        std::cout << "Threshold: " << DOUGLAS_PEUCKER_THRESHOLDS[z] << std::endl;
+        dp.Run(info, z);
+        std::cout << "z: " << z << std::endl;
+        BOOST_CHECK_EQUAL(info[0].necessary, true);
+        BOOST_CHECK_EQUAL(info[1].necessary, false);
+        BOOST_CHECK_EQUAL(info[2].necessary, true);
+        BOOST_CHECK_EQUAL(info[3].necessary, true);
+        BOOST_CHECK_EQUAL(info[4].necessary, false);
+        BOOST_CHECK_EQUAL(info[5].necessary, true);
+    }
+}
+
+BOOST_AUTO_TEST_SUITE_END()

UnitTests/algorithm_tests.cpp

@@ -0,0 +1,8 @@
+#define BOOST_TEST_MODULE algorithm tests
+
+#include <boost/test/unit_test.hpp>
+
+/*
+ * This file will contain an automatically generated main function.
+ */
+