diff --git a/CMakeLists.txt b/CMakeLists.txt
index 70d0a5af..3eef6981 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -76,8 +76,11 @@ if(CLICE_ENABLE_TEST)
 
     # add googletest
     add_subdirectory("${CMAKE_SOURCE_DIR}/deps/googletest")
-    target_include_directories(clice_test PRIVATE "${CMAKE_SOURCE_DIR}/deps/googletest/googletest/include")
-    target_link_libraries(clice_test PRIVATE gtest_main)
+    target_include_directories(clice_test PRIVATE 
+        "${CMAKE_SOURCE_DIR}/deps/googletest/googletest/include"
+        "${CMAKE_SOURCE_DIR}/deps/spdlog/include"
+    )
+    target_link_libraries(clice_test PRIVATE gtest_main spdlog::spdlog)
 
     target_clang(clice_test)
     file(GLOB_RECURSE AST_SRC_FILES 
@@ -86,6 +89,6 @@ if(CLICE_ENABLE_TEST)
         "${CMAKE_SOURCE_DIR}/src/Feature/*.cpp" 
         "${CMAKE_SOURCE_DIR}/src/Support/*.cpp"
     )
-    file(GLOB_RECURSE TEST_SRC_FILES "${CMAKE_SOURCE_DIR}/tests/*/*.cpp")
+    file(GLOB TEST_SRC_FILES "${CMAKE_SOURCE_DIR}/tests/*/*.cpp")
     target_sources(clice_test PRIVATE ${AST_SRC_FILES} ${TEST_SRC_FILES} ${CMAKE_SOURCE_DIR}/tests/main.cpp)
 endif()
diff --git a/include/Compiler/Selection.h b/include/Compiler/Selection.h
index 7c4edaf1..ae2ebeb5 100644
--- a/include/Compiler/Selection.h
+++ b/include/Compiler/Selection.h
@@ -13,11 +13,10 @@ namespace clice {
 
 class SelectionTree {
 public:
-
-
-    SelectionTree(clang::ASTContext& context, const clang::syntax::TokenBuffer& tokens, unsigned start, unsigned end);
-
-private:
+    SelectionTree(clang::ASTContext& context,
+                  const clang::syntax::TokenBuffer& tokens,
+                  clang::SourceLocation begin,
+                  clang::SourceLocation end);
 };
 
 }  // namespace clice
diff --git a/src/Compiler/Selection.cpp b/src/Compiler/Selection.cpp
index 0584b165..2130c324 100644
--- a/src/Compiler/Selection.cpp
+++ b/src/Compiler/Selection.cpp
@@ -6,57 +6,47 @@ namespace {
 
 class SelectionBuilder {
 public:
+    SelectionBuilder(clang::SourceRange input, clang::ASTContext& context) : input(input), context(context) {}
+
     void push() {}
 
     void pop() {}
 
-    template <typename Callback>
-    bool hook(const clang::Stmt* stmt, const Callback& callback) {
-        auto range = stmt->getSourceRange();
+    template <typename Node>
+    bool isSkippable(const Node* node) {
+        if constexpr(std::is_same_v<Node, clang::Decl>) {
+            if(llvm::dyn_cast<clang::TranslationUnitDecl>(node)) {
+                return false;
+            }
+        }
+
+        clang::SourceRange range;
+        if constexpr(std::is_base_of_v<Node, clang::Attr>) {
+            range = node->getRange();
+        } else {
+            range = node->getSourceRange();
+        }
+
+        if(range.isInvalid()) {
+            return true;
+        }
+
+        range.dump(context.getSourceManager());
+        return input.getBegin() > range.getEnd() || input.getEnd() < range.getBegin();
+    }
+
+    template <typename Node, typename Callback>
+    bool hook(const Node* node, const Callback& callback) {
+        if(isSkippable(node)) {
+            return true;
+        }
+
         return callback();
     }
 
-    template <typename Callback>
-    bool hook(const clang::TypeLoc& loc, const Callback& callback) {
-        auto range = loc.getSourceRange();
-        return callback();
-    }
-
-    template <typename Callback>
-    bool hook(const clang::Attr* attr, const Callback& callback) {
-        auto range = attr->getRange();
-        return callback();
-    }
-
-    template <typename Callback>
-    bool hook(const clang::Decl* decl, const Callback& callback) {
-        auto range = decl->getSourceRange();
-        return callback();
-    }
-
-    template <typename Callback>
-    bool hook(const clang::NestedNameSpecifierLoc& NNS, const Callback& callback) {
-        auto range = NNS.getSourceRange();
-        return callback();
-    }
-
-    template <typename Callback>
-    bool hook(const clang::TemplateArgumentLoc& argument, const Callback& callback) {
-        auto range = argument.getSourceRange();
-        return callback();
-    }
-
-    template <typename Callback>
-    bool hook(const clang::CXXBaseSpecifier& base, const Callback& callback) {
-        auto range = base.getSourceRange();
-        return callback();
-    }
-
-    template <typename Callback>
-    bool hook(const clang::CXXCtorInitializer* init, const Callback& callback) {
-        auto range = init->getSourceRange();
-        return callback();
-    }
+private:
+    clang::SourceRange input;
+    clang::ASTContext& context;
 };
 
 class SelectionCollector : public clang::RecursiveASTVisitor<SelectionCollector> {
@@ -78,7 +68,7 @@ public:
     }
 
     bool TraverseTypeLoc(clang::TypeLoc loc) {
-        return builder.hook(loc, [&] {
+        return builder.hook(&loc, [&] {
             return Base::TraverseTypeLoc(loc);
         });
     }
@@ -102,19 +92,19 @@ public:
     }
 
     bool TraverseNestedNameSpecifierLoc(clang::NestedNameSpecifierLoc NNS) {
-        return builder.hook(NNS, [&] {
+        return builder.hook(&NNS, [&] {
             return Base::TraverseNestedNameSpecifierLoc(NNS);
         });
     }
 
     bool TraverseTemplateArgumentLoc(const clang::TemplateArgumentLoc& argument) {
-        return builder.hook(argument, [&] {
+        return builder.hook(&argument, [&] {
             return Base::TraverseTemplateArgumentLoc(argument);
         });
     }
 
     bool TraverseCXXBaseSpecifier(const clang::CXXBaseSpecifier& base) {
-        return builder.hook(base, [&] {
+        return builder.hook(&base, [&] {
             return Base::TraverseCXXBaseSpecifier(base);
         });
     }
@@ -136,4 +126,15 @@ private:
 
 }  // namespace
 
+SelectionTree::SelectionTree(clang::ASTContext& context,
+                             const clang::syntax::TokenBuffer& tokens,
+                             clang::SourceLocation begin,
+                             clang::SourceLocation end) {
+
+    SelectionBuilder builder({begin, end}, context);
+    SelectionCollector collector(builder);
+    collector.TraverseAST(context);
+    // context.getTranslationUnitDecl()->dump();
+}
+
 }  // namespace clice
diff --git a/tests/AST/Resolver.cpp b/tests/AST/Resolver.cpp
index 22f9f1b8..03ef15ab 100644
--- a/tests/AST/Resolver.cpp
+++ b/tests/AST/Resolver.cpp
@@ -58,23 +58,11 @@ void match(clang::QualType type, std::string name, std::initializer_list<std::st
 }
 
 TEST(clice, TemplateResolver) {
-    // FIXME: more flexible
-    auto path = test_dir() + "/TemplateResolver";
-    std::error_code error;
-    fs::directory_iterator iter(path, error);
-    fs::directory_iterator end;
-    while(!error && iter != end) {
-        auto file = iter->path();
-        llvm::outs() << "test: " << file << " " << error.message() << "\n";
-        auto buffer = llvm::MemoryBuffer::getFile(file);
-        if(!buffer) {
-            llvm::outs() << "failed to open file: " << buffer.getError().message() << file << "\n";
-        }
-        auto content = buffer.get()->getBuffer();
+    foreachFile("TemplateResolver", [&](std::string file, llvm::StringRef content) {
         Visitor visitor(content);
         visitor.test();
-        iter.increment(error);
-    }
+        llvm::outs() << fmt::format(fg(fmt::color::yellow_green), "[TemplateResolver: {}]\n", file);
+    });
 }
 
 }  // namespace
diff --git a/tests/AST/Selection.cpp b/tests/AST/Selection.cpp
new file mode 100644
index 00000000..53278154
--- /dev/null
+++ b/tests/AST/Selection.cpp
@@ -0,0 +1,28 @@
+#include "../Test.h"
+#include <Compiler/Selection.h>
+
+namespace {
+
+std::vector<const char*> compileArgs = {
+    "clang++",
+    "-std=c++20",
+    "main.cpp",
+    "-resource-dir",
+    "/home/ykiko/C++/clice2/build/lib/clang/20",
+};
+
+using namespace clice;
+
+TEST(clice, SelectionTree) {
+    foreachFile("SelectionTree", [](std::string file, llvm::StringRef content) {
+        auto AST = ParsedAST::build("main.cpp", content, compileArgs);
+        auto id = AST->getFileID("main.cpp");
+        auto& sm = AST->context.getSourceManager();
+        auto begin = sm.translateLineCol(id, 1, 5);
+        auto end = sm.translateLineCol(id, 1, 8);
+        SelectionTree tree(AST->context, AST->tokenBuffer, begin, end);
+    });
+}
+
+}  // namespace
+
diff --git a/tests/Source/SelectionTree/test.cpp b/tests/Source/SelectionTree/test.cpp
new file mode 100644
index 00000000..676a651f
--- /dev/null
+++ b/tests/Source/SelectionTree/test.cpp
@@ -0,0 +1 @@
+int foo = 122;
\ No newline at end of file
diff --git a/tests/Test.h b/tests/Test.h
index cbed29d4..076e840f 100644
--- a/tests/Test.h
+++ b/tests/Test.h
@@ -1,5 +1,33 @@
+#pragma once
+
 #include <gtest/gtest.h>
 
 #include <Support/FileSystem.h>
+#include <spdlog/fmt/bundled/color.h>
 
+namespace clice {
 std::string test_dir();
+
+template <typename Callback>
+inline void foreachFile(std::string name, const Callback& callback) {
+    llvm::SmallString<128> path;
+    path += test_dir();
+    path::append(path, name);
+    std::error_code error;
+    fs::directory_iterator iter(path, error);
+    fs::directory_iterator end;
+    while(!error && iter != end) {
+        auto file = iter->path();
+        auto buffer = llvm::MemoryBuffer::getFile(file);
+        if(!buffer) {
+            llvm::outs() << "failed to open file: " << buffer.getError().message() << file << "\n";
+            // TODO:
+        }
+        auto content = buffer.get()->getBuffer();
+        callback(file, content);
+        iter.increment(error);
+    }
+}
+
+}  // namespace clice
+
diff --git a/tests/main.cpp b/tests/main.cpp
index ee85a7a0..7500346f 100644
--- a/tests/main.cpp
+++ b/tests/main.cpp
@@ -1,6 +1,8 @@
 #include <gtest/gtest.h>
 #include <llvm/Support/CommandLine.h>
 
+namespace clice {
+
 llvm::cl::opt<std::string> test_dir_path("test-dir",
                                          llvm::cl::desc("specify the test source directory path"),
                                          llvm::cl::value_desc("path"),
@@ -10,6 +12,8 @@ std::string test_dir() {
     return test_dir_path;
 }
 
+}  // namespace clice
+
 int main(int argc, char** argv) {
     testing::InitGoogleTest(&argc, argv);
     llvm::cl::ParseCommandLineOptions(argc, argv, "clice test\n");