Fix PR #1600

tests/CMakeLists.txt

@@ -0,0 +1,38 @@
+enable_testing()
+add_test(NAME dummy_test COMMAND dummy_test)
+
+# Find GTest
+
+add_executable(dummy_test dummy_test.cpp)
+
+find_package(GTest)
+
+if(NOT GTEST_FOUND)
+    IF(NOT EXISTS "${CMAKE_BINARY_DIR}/gtest-build")
+        message(STATUS "Downloading googletest")
+        configure_file("${CMAKE_SOURCE_DIR}/cmake/gtest-CMakeLists.txt.in" "${CMAKE_BINARY_DIR}/gtest-download/CMakeLists.txt")
+        execute_process(COMMAND ${CMAKE_COMMAND} -G "${CMAKE_GENERATOR}" .
+                WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/gtest-download )
+        execute_process(COMMAND ${CMAKE_COMMAND} --build .
+                WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/gtest-download )
+    ELSE()
+        message(STATUS "GoogleTest directory exists")
+    ENDIF()
+
+    # Add gtest directly to our build
+    add_subdirectory(${CMAKE_BINARY_DIR}/gtest-src
+            ${CMAKE_BINARY_DIR}/gtest-build
+            EXCLUDE_FROM_ALL )
+
+    # Add the gtest include directory, since gtest
+    # doesn't add that dependency to its gtest target
+    target_include_directories(gtest INTERFACE
+            "${CMAKE_BINARY_DIR}/gtest-src/include" )
+
+    SET(GTEST_INCLUDE_DIRS "${CMAKE_BINARY_DIR}/gtest-src/include")
+    SET(GTEST_BOTH_LIBRARIES gtest)
+    add_dependencies(dummy_test gtest)
+endif()
+
+include_directories(${GTEST_INCLUDE_DIRS})
+target_link_libraries(dummy_test ${GTEST_BOTH_LIBRARIES})

tests/dummy_test.cpp

@@ -0,0 +1,16 @@
+#include "gtest/gtest.h"
+
+namespace {
+    class FooTest : public ::testing::Test {
+
+    };
+
+    TEST(DummyTest, Works) {
+        ASSERT_EQ(1, 1) << "One is not equal to one";
+    }
+}
+
+int main(int argc, char **argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}