1. update README; 2. make unit tests an optional feature.

CMakeLists.txt

@@ -2,8 +2,8 @@ cmake_minimum_required(VERSION 2.8)
 
 project(KnightKing)
 
-set(WITH_UNIT_TEST TRUE)
 set(KTK_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
+option(WITH_TESTS "Build unit test programs" OFF)
 
 include(knightking.cmake)
 
@@ -21,7 +21,7 @@ if(MPI_FOUND)
     include_directories(${MPI_INCLUDE_PATH})
 endif()
 
-if(WITH_UNIT_TEST)
+if(WITH_TESTS)
     enable_testing()
     include_directories("${CMAKE_CURRENT_SOURCE_DIR}/ext/gtest/googletest/include")
     add_subdirectory(ext/gtest)

README.md

@@ -57,6 +57,14 @@ The compiled executable files will be installed at the "bin" directory:
 ls ./bin
 ```
 
+[Optional] Run unit tests:
+
+```
+cmake -DWITH_TESTS=on ..
+ctest
+```
+note that the unit test may take about one hour.
+
 ### Run Built-in Applications
 
 Here we take node2vec as an example to show how to run the built-in applications. The usage of other three applications is quite similar.

knightking.cmake

@@ -17,7 +17,7 @@ foreach(prog "test_storage")
     add_test("${prog}" "${KTK_RUNTIME_OUTPUT_DIRECTORY}/${prog}")
 endforeach(prog)
 
-foreach(prog "test_graph" "test_path" "test_bound" "test_outlier" "test_deepwalk" "test_ppr" "test_metapath" "test_node2vec")
+foreach(prog "test_graph" "test_path" "test_walker" "test_bound" "test_outlier" "test_deepwalk" "test_ppr" "test_metapath" "test_node2vec")
     add_test("${prog}" "./bin/${prog}")
     add_test("distributed_${prog}" "mpirun" "-n" "2" "${KTK_RUNTIME_OUTPUT_DIRECTORY}/${prog}")
 endforeach(prog)

src/CMakeLists.txt

@@ -1,4 +1,4 @@
-IF(WITH_UNIT_TEST)
+IF(WITH_TESTS)
     add_subdirectory(tests)
 ENDIF()
 add_subdirectory(apps)