diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0cd5ec8..5e931c7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -41,6 +41,7 @@ if(INSTALL_COZ)
 endif()
 
 add_subdirectory(libcoz)
+add_subdirectory(test)
 
 option(BUILD_BENCHMARKS "Build benchmarks" OFF)
 if(BUILD_BENCHMARKS)
diff --git a/libcoz/CMakeLists.txt b/libcoz/CMakeLists.txt
index a3a9ea9..b671f4d 100644
--- a/libcoz/CMakeLists.txt
+++ b/libcoz/CMakeLists.txt
@@ -2,7 +2,6 @@ set(sources
     ${PROJECT_SOURCE_DIR}/include/coz.h
     inspect.cpp
     inspect.h
-    libcoz.cpp
     perf.cpp
     perf.h
     profiler.cpp
@@ -14,7 +13,8 @@ set(sources
     util.h
     )
 
-add_library(coz MODULE ${sources} ${public_headers})
+add_library(coz MODULE libcoz.cpp ${sources} ${public_headers})
+add_library(coz_nopre SHARED ${sources} ${public_headers})
 if(CONAN_PACKAGE_VERSION)
     set_target_properties(coz PROPERTIES VERSION ${CONAN_PACKAGE_VERSION})
 endif()
@@ -23,6 +23,7 @@ target_include_directories(coz
         $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
         $<INSTALL_INTERFACE:include>)
 target_link_libraries(coz PRIVATE ${CMAKE_DL_LIBS} rt Threads::Threads libelfin::libelfin)
+target_link_libraries(coz_nopre PRIVATE ${CMAKE_DL_LIBS} rt Threads::Threads libelfin::libelfin)
 
 add_library(coz-instrumentation INTERFACE)
 target_include_directories(coz-instrumentation
@@ -39,3 +40,4 @@ if(INSTALL_COZ)
         RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
     install(DIRECTORY ${PROJECT_SOURCE_DIR}/include/. DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
 endif()
+
diff --git a/libcoz/inspect.h b/libcoz/inspect.h
index 31d1c12..c52614f 100644
--- a/libcoz/inspect.h
+++ b/libcoz/inspect.h
@@ -145,6 +145,10 @@ class memory_map {
   
   static memory_map& get_instance();
   
+  /// Find a debug version of provided file and add all of its in-scope lines to the map
+  bool process_file(const std::string& name, uintptr_t load_address,
+                    const std::unordered_set<std::string>& source_scope);
+
 private:
   memory_map() : _files(std::map<std::string, std::shared_ptr<file>>()),
                  _ranges(std::map<interval, std::shared_ptr<line>>()) {}
@@ -164,10 +168,6 @@ class memory_map {
   
   void add_range(std::string filename, size_t line_no, interval range);
   
-  /// Find a debug version of provided file and add all of its in-scope lines to the map
-  bool process_file(const std::string& name, uintptr_t load_address,
-                    const std::unordered_set<std::string>& source_scope);
-  
   /// Add entries for all inlined calls
   void process_inlines(const dwarf::die& d,
                        const dwarf::line_table& table,
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
new file mode 100644
index 0000000..c58038f
--- /dev/null
+++ b/test/CMakeLists.txt
@@ -0,0 +1,33 @@
+cmake_minimum_required(VERSION 3.13.0)
+project(coz VERSION 0.2.2 LANGUAGES C CXX)
+
+enable_testing()
+
+set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CONAN_CMAKE_SILENT_OUTPUT ON)
+
+include(FetchContent)
+FetchContent_Declare(
+  googletest
+  GIT_REPOSITORY https://github.com/google/googletest.git
+  GIT_TAG        58d77fa8070e8cec2dc1ed015d66b454c8d78850 # release-1.12.1
+)
+# For Windows: Prevent overriding the parent project's compiler/linker settings
+set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
+FetchContent_MakeAvailable(googletest)
+
+add_executable(
+    load_basic_test
+    load_basic_test.cpp
+)
+target_link_libraries(
+    load_basic_test
+    PRIVATE
+    GTest::gtest_main
+    #libcoz.so
+    coz_nopre
+)
+
+include(GoogleTest)
+gtest_discover_tests(load_basic_test)
diff --git a/test/load_basic_test.cpp b/test/load_basic_test.cpp
new file mode 100644
index 0000000..2e02898
--- /dev/null
+++ b/test/load_basic_test.cpp
@@ -0,0 +1,18 @@
+#include <sstream>
+#include <string>
+#include <unordered_set>
+
+#include <gtest/gtest.h>
+
+#include "../libcoz/inspect.h"
+
+using namespace std;
+
+TEST(BasicTestCases, TestMapForPrebuiltToy) {
+    auto toy_file = "../benchmarks/toy/toy";
+    unordered_set<string> source_scope{"%/toy.cpp"};
+    auto& mm = memory_map::get_instance();
+    mm.process_file(toy_file, 0, source_scope);
+    auto x = mm.find_line("toy.cpp:17");
+    EXPECT_EQ(x->get_line(), 17);
+}