[vcpkg] Refactor end-to-end tests (#15081)

* [vcpkg] Refactor end-to-end tests

* [vcpkg] Cherry-pick x-builtin-ports-root from #14999

* [vcpkg] Move create test from unit tests to e2e

Co-authored-by: Robert Schumacher <roschuma@microsoft.com>

2 files changed, 4 insertions, 1 deletions

diff --git a/toolsrc/include/vcpkg/vcpkgcmdarguments.h b/toolsrc/include/vcpkg/vcpkgcmdarguments.h
index 16e433d63..f18f4843c 100644
--- a/toolsrc/include/vcpkg/vcpkgcmdarguments.h
+++ b/toolsrc/include/vcpkg/vcpkgcmdarguments.h
@@ -132,6 +132,8 @@ namespace vcpkg
         std::unique_ptr<std::string> packages_root_dir;
         constexpr static StringLiteral SCRIPTS_ROOT_DIR_ARG = "x-scripts-root";
         std::unique_ptr<std::string> scripts_root_dir;
+        constexpr static StringLiteral BUILTIN_PORTS_ROOT_DIR_ARG = "x-builtin-ports-root";
+        std::unique_ptr<std::string> builtin_ports_root_dir;
 
         constexpr static StringLiteral DEFAULT_VISUAL_STUDIO_PATH_ENV = "VCPKG_VISUAL_STUDIO_PATH";
         std::unique_ptr<std::string> default_visual_studio_path;
diff --git a/toolsrc/include/vcpkg/vcpkgpaths.h b/toolsrc/include/vcpkg/vcpkgpaths.h
index 257ecf7bb..e71f28b0a 100644
--- a/toolsrc/include/vcpkg/vcpkgpaths.h
+++ b/toolsrc/include/vcpkg/vcpkgpaths.h
@@ -91,6 +91,7 @@ namespace vcpkg
         fs::path community_triplets;
         fs::path scripts;
         fs::path prefab;
+        fs::path builtin_ports;
 
         fs::path tools;
         fs::path buildsystems;
@@ -142,7 +143,7 @@ namespace vcpkg
 
         // the directory of the builtin ports
         // this should be used only for helper commands, not core commands like `install`.
-        fs::path builtin_ports_directory() const { return root / fs::u8path("ports"); }
+        fs::path builtin_ports_directory() const { return this->builtin_ports; }
 
     private:
         std::unique_ptr<details::VcpkgPathsImpl> m_pimpl;