1 files changed, 80 insertions, 0 deletions
diff --git a/toolsrc/src/tests.files.cpp b/toolsrc/src/tests.files.cpp
new file mode 100644
index 000000000..73c7eb5bc
--- /dev/null
+++ b/toolsrc/src/tests.files.cpp
@@ -0,0 +1,80 @@
+#include "tests.pch.h"
+
+#include <vcpkg/base/files.h>
+#include <vcpkg/base/strings.h>
+
+#include <iostream>
+#include <random>
+
+#include <windows.h>
+
+using namespace Microsoft::VisualStudio::CppUnitTestFramework;
+
+namespace UnitTest1 {
+    class FilesTest : public TestClass<FilesTest> {
+        using uid = std::uniform_int_distribution<std::uint64_t>;
+        
+        std::string get_random_filename()
+        {
+            std::random_device rd;
+            return vcpkg::Strings::b64url_encode(uid{}(rd));
+        }
+        
+        void create_directory_tree(
+            vcpkg::Files::Filesystem& fs,
+            std::uint64_t depth,
+            const fs::path& base)
+        {
+            std::random_device rd;
+            constexpr auto max_depth = std::uint64_t(3);
+            const auto width = depth ? uid{0, (max_depth - depth) * 3 / 2}(rd) : 5;
+
+            std::error_code ec;
+            if (width == 0) {
+                fs.write_contents(base, "", ec);
+                Assert::IsFalse(bool(ec));
+
+                return;
+            }
+
+            fs.create_directory(base, ec);
+            Assert::IsFalse(bool(ec));
+
+            for (int i = 0; i < width; ++i) {
+                create_directory_tree(fs, depth + 1, base / get_random_filename());
+            }
+        }
+		
+        TEST_METHOD(remove_all) {
+            fs::path temp_dir;
+
+            {
+                wchar_t* tmp = static_cast<wchar_t*>(calloc(32'767, 2));
+
+                if (!GetEnvironmentVariableW(L"TEMP", tmp, 32'767)) {
+                    Assert::Fail(L"GetEnvironmentVariable(\"TEMP\") failed");
+                }
+
+                temp_dir = tmp;
+
+                std::string dir_name = "vcpkg-tmp-dir-";
+                dir_name += get_random_filename();
+
+                temp_dir /= dir_name;
+            }
+
+            auto& fs = vcpkg::Files::get_real_filesystem();
+
+			std::cout << "temp dir is: " << temp_dir << '\n';
+
+            std::error_code ec;
+			create_directory_tree(fs, 0, temp_dir);
+
+            fs::path fp;
+            fs.remove_all(temp_dir, ec, fp);
+            Assert::IsFalse(bool(ec));
+
+            Assert::IsFalse(fs.exists(temp_dir));
+        }
+    };
+}