///

### What is "Mounting" { #what-is-mounting }

"Mounting" means adding a complete "independent" application in a specific path, that then takes care of handling all the sub-paths.

This is different from using an `APIRouter` as a mounted application is completely independent. The OpenAPI and docs from your main application won't include anything from the mounted application, etc.

TFCI_BAZEL_BAZELRC_ARGS="--output_user_root=C:/x"
TFCI_BAZEL_COMMON_ARGS="--repo_env=HERMETIC_PYTHON_VERSION=$TFCI_PYTHON_VERSION --repo_env=USE_PYWRAP_RULES=True --config=windows_x86_cpu_2022"

# For RBE, we explicitly set invalid paths to force the auto-configuration to fail.
TFCI_BAZEL_VC="C:/RBE_ISOLATED_INVALID_PATH"
TFCI_BAZEL_LLVM="C:/RBE_ISOLATED_INVALID_PATH"
TFCI_BAZEL_SH="C:/tools/msys64/usr/bin/bash.exe"
TFCI_USE_CLANG_CL=0

    assert response.status_code == 200, response.text
    assert response.json() == snapshot(
        {
            "openapi": "3.1.0",
            "info": {"title": "FastAPI", "version": "0.1.0"},
            "paths": {
                "/users/me": {
                    "get": {
                        "responses": {
                            "200": {
                                "description": "Successful Response",

    assert response.status_code == 200, response.text
    assert response.json() == snapshot(
        {
            "openapi": "3.1.0",
            "info": {"title": "FastAPI", "version": "0.1.0"},
            "paths": {
                "/items/": {
                    "get": {
                        "responses": {
                            "200": {
                                "description": "Successful Response",

        // Should not match non-included path
        assertFalse(pattern.match("/other/path"));
    }

    @Test
    public void test_labelTypePattern_match_onlyIncluded() {
        LabelTypePattern pattern = new LabelTypePattern("test", "/test.*", null);

        // Should match included path
        assertTrue(pattern.match("/test/path"));

        // Should not match non-included path

    assert response.status_code == 200, response.text
    assert response.json() == snapshot(
        {
            "openapi": "3.1.0",
            "info": {"title": "FastAPI", "version": "0.1.0"},
            "paths": {
                "/users/me": {
                    "get": {
                        "responses": {
                            "200": {
                                "description": "Successful Response",

    assert response.status_code == 200, response.text
    assert response.json() == snapshot(
        {
            "openapi": "3.1.0",
            "info": {"title": "FastAPI", "version": "0.1.0"},
            "paths": {
                "/users/me": {
                    "get": {
                        "responses": {
                            "200": {
                                "description": "Successful Response",

    assert response.status_code == 200, response.text
    assert response.json() == snapshot(
        {
            "openapi": "3.1.0",
            "info": {"title": "FastAPI", "version": "0.1.0"},
            "paths": {
                "/users/me": {
                    "get": {
                        "responses": {
                            "200": {
                                "description": "Successful Response",

    @Override
    public String alignToBaseDirectory(String path, File basedir) {
        String result = path;

        if (path != null && basedir != null) {
            path = path.replace('\\', File.separatorChar).replace('/', File.separatorChar);

            File file = new File(path);
            if (file.isAbsolute()) {
                // path was already absolute, just normalize file separator and we're done

    assert response.status_code == 200, response.text
    assert response.json() == snapshot(
        {
            "openapi": "3.1.0",
            "info": {"title": "FastAPI", "version": "0.1.0"},
            "paths": {
                "/users/me": {
                    "get": {
                        "responses": {
                            "200": {
                                "description": "Successful Response",