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-rw-r--r--tests/FastRandom/CMakeLists.txt44
-rw-r--r--tests/FastRandom/FastRandomTest.cpp71
2 files changed, 115 insertions, 0 deletions
diff --git a/tests/FastRandom/CMakeLists.txt b/tests/FastRandom/CMakeLists.txt
new file mode 100644
index 000000000..a9d62bf94
--- /dev/null
+++ b/tests/FastRandom/CMakeLists.txt
@@ -0,0 +1,44 @@
+enable_testing()
+add_definitions(-DTEST_GLOBALS=1)
+
+include_directories(${CMAKE_SOURCE_DIR}/src/)
+
+add_definitions(-DTEST_GLOBALS=1)
+
+set (SHARED_SRCS
+ ${CMAKE_SOURCE_DIR}/src/FastRandom.cpp
+ ${CMAKE_SOURCE_DIR}/src/OSSupport/StackTrace.cpp
+)
+
+set (SHARED_HDRS
+ ${CMAKE_SOURCE_DIR}/src/FastRandom.h
+ ${CMAKE_SOURCE_DIR}/src/OSSupport/StackTrace.h
+)
+
+set (SRCS
+ FastRandomTest.cpp
+)
+
+if (MSVC)
+ # Add the MSVC-specific LeakFinder / StackTracer sources:
+ list (APPEND SHARED_SRCS ${CMAKE_SOURCE_DIR}/src/LeakFinder.cpp ${CMAKE_SOURCE_DIR}/src/StackWalker.cpp)
+ list (APPEND SHARED_HDRS ${CMAKE_SOURCE_DIR}/src/LeakFinder.h ${CMAKE_SOURCE_DIR}/src/StackWalker.h)
+endif()
+
+source_group("Shared" FILES ${SHARED_SRCS} ${SHARED_HDRS})
+source_group("Sources" FILES ${SRCS})
+add_executable(FastRandom-exe ${SRCS} ${SHARED_SRCS} ${SHARED_HDRS})
+if (WIN32)
+ target_link_libraries(FastRandom-exe ws2_32)
+endif()
+add_test(NAME FastRandom-test COMMAND FastRandom-exe)
+
+
+
+
+
+# Put the projects into solution folders (MSVC):
+set_target_properties(
+ FastRandom-exe
+ PROPERTIES FOLDER Tests
+)
diff --git a/tests/FastRandom/FastRandomTest.cpp b/tests/FastRandom/FastRandomTest.cpp
new file mode 100644
index 000000000..e7729382d
--- /dev/null
+++ b/tests/FastRandom/FastRandomTest.cpp
@@ -0,0 +1,71 @@
+
+// FastRandomTest.cpp
+
+// Tests the randomness of cFastRandom
+
+#include "Globals.h"
+#include "FastRandom.h"
+
+
+static void TestInts(void)
+{
+ cFastRandom rnd;
+ int sum = 0;
+ const int BUCKETS = 8;
+ int Counts[BUCKETS];
+ memset(Counts, 0, sizeof(Counts));
+ const int ITER = 10000;
+ for (int i = 0; i < ITER; i++)
+ {
+ int v = rnd.NextInt(1000);
+ assert_test(v >= 0);
+ assert_test(v < 1000);
+ Counts[v % BUCKETS]++;
+ sum += v;
+ }
+ double avg = static_cast<double>(sum) / ITER;
+ printf("avg: %f\n", avg);
+ for (int i = 0; i < BUCKETS; i++)
+ {
+ printf(" bucket %d: %d\n", i, Counts[i]);
+ }
+}
+
+
+static void TestFloats(void)
+{
+ cFastRandom rnd;
+ float sum = 0;
+ const int BUCKETS = 8;
+ int Counts[BUCKETS];
+ memset(Counts, 0, sizeof(Counts));
+ const int ITER = 10000;
+ for (int i = 0; i < ITER; i++)
+ {
+ float v = rnd.NextFloat(1000);
+ assert_test(v >= 0);
+ assert_test(v <= 1000);
+ Counts[static_cast<int>(v) % BUCKETS]++;
+ sum += v;
+ }
+ sum = sum / ITER;
+ printf("avg: %f\n", sum);
+ for (int i = 0; i < BUCKETS; i++)
+ {
+ printf(" bucket %d: %d\n", i, Counts[i]);
+ }
+}
+
+
+int main(void)
+{
+ LOGD("FastRandom Test started");
+
+ LOGD("Testing ints");
+ TestInts();
+
+ LOGD("Testing floats");
+ TestFloats();
+
+ LOG("FastRandom test finished");
+}