From 75f7b778df7a13f81cd82ff580066439f0b11ad1 Mon Sep 17 00:00:00 2001
From: "glm-5.1" <glm-5.1@alk.dev>
Date: Thu, 11 Jun 2026 11:46:43 +0000
Subject: [PATCH] Add test infrastructure with fixtures, helpers, and
 integration tests

- Add [lib] target to enable integration test imports
- Add rcgen and reqwest dev-dependencies for TLS and HTTP test helpers
- Create src/config/test_fixtures.rs with test_static_config() and test_dynamic_config()
- Create tests/ with integration tests, HTTP test helper (TestUpstream), and TLS test helper (SelfSignedCert)
- Add Clone derives to StaticConfig and related structs for test fixture construction
- All existing tests continue to pass
---
 Cargo.lock                        | 666 +++++++++++++++++++++++++++++-
 Cargo.toml                        |  10 +-
 src/config/mod.rs                 |   1 +
 src/config/static_config.rs       |   8 +-
 src/config/test_fixtures.rs       |  65 +++
 src/lib.rs                        |   8 +
 src/main.rs                       |   9 -
 tests/helpers/http_test_helper.rs |  47 +++
 tests/helpers/mod.rs              |   2 +
 tests/helpers/tls_test_helper.rs  |  28 ++
 tests/integration_test.rs         |  32 ++
 11 files changed, 853 insertions(+), 23 deletions(-)
 create mode 100644 src/config/test_fixtures.rs
 create mode 100644 src/lib.rs
 create mode 100644 tests/helpers/http_test_helper.rs
 create mode 100644 tests/helpers/mod.rs
 create mode 100644 tests/helpers/tls_test_helper.rs
 create mode 100644 tests/integration_test.rs

diff --git a/Cargo.lock b/Cargo.lock
index 47788c4..b7909ec 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -315,7 +315,7 @@ dependencies = [
  "miniz_oxide",
  "object",
  "rustc-demangle",
- "windows-link",
+ "windows-link 0.2.1",
 ]
 
 [[package]]
@@ -381,7 +381,7 @@ checksum = "1aa79e62e7697b8e29b513a68abacf485adcd1fe8284a4316c5ae868e6633327"
 dependencies = [
  "iana-time-zone",
  "num-traits",
- "windows-link",
+ "windows-link 0.2.1",
 ]
 
 [[package]]
@@ -448,6 +448,26 @@ dependencies = [
  "crossbeam-utils",
 ]
 
+[[package]]
+name = "core-foundation"
+version = "0.9.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "91e195e091a93c46f7102ec7818a2aa394e1e1771c3ab4825963fa03e45afb8f"
+dependencies = [
+ "core-foundation-sys",
+ "libc",
+]
+
+[[package]]
+name = "core-foundation"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b2a6cd9ae233e7f62ba4e9353e81a88df7fc8a5987b8d445b4d90c879bd156f6"
+dependencies = [
+ "core-foundation-sys",
+ "libc",
+]
+
 [[package]]
 name = "core-foundation-sys"
 version = "0.8.7"
@@ -506,6 +526,15 @@ version = "1.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "92773504d58c093f6de2459af4af33faa518c13451eb8f2b5698ed3d36e7c813"
 
+[[package]]
+name = "encoding_rs"
+version = "0.8.35"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "75030f3c4f45dafd7586dd6780965a8c7e8e285a5ecb86713e63a79c5b2766f3"
+dependencies = [
+ "cfg-if",
+]
+
 [[package]]
 name = "equivalent"
 version = "1.0.2"
@@ -555,6 +584,27 @@ version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5baebc0774151f905a1a2cc41989300b1e6fbb29aff0ceffa1064fdd3088d582"
 
+[[package]]
+name = "fnv"
+version = "1.0.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
+
+[[package]]
+name = "foreign-types"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f6f339eb8adc052cd2ca78910fda869aefa38d22d5cb648e6485e4d3fc06f3b1"
+dependencies = [
+ "foreign-types-shared",
+]
+
+[[package]]
+name = "foreign-types-shared"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "00b0228411908ca8685dba7fc2cdd70ec9990a6e753e89b6ac91a84c40fbaf4b"
+
 [[package]]
 name = "form_urlencoded"
 version = "1.2.2"
@@ -711,6 +761,25 @@ version = "0.32.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e629b9b98ef3dd8afe6ca2bd0f89306cec16d43d907889945bc5d6687f2f13c7"
 
+[[package]]
+name = "h2"
+version = "0.4.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "171fefbc92fe4a4de27e0698d6a5b392d6a0e333506bc49133760b3bcf948733"
+dependencies = [
+ "atomic-waker",
+ "bytes",
+ "fnv",
+ "futures-core",
+ "futures-sink",
+ "http",
+ "indexmap",
+ "slab",
+ "tokio",
+ "tokio-util",
+ "tracing",
+]
+
 [[package]]
 name = "hashbrown"
 version = "0.17.1"
@@ -783,6 +852,7 @@ dependencies = [
  "bytes",
  "futures-channel",
  "futures-util",
+ "h2",
  "http",
  "http-body",
  "httparse",
@@ -791,6 +861,38 @@ dependencies = [
  "pin-project-lite",
  "smallvec",
  "tokio",
+ "want",
+]
+
+[[package]]
+name = "hyper-rustls"
+version = "0.27.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "33ca68d021ef39cf6463ab54c1d0f5daf03377b70561305bb89a8f83aab66e0f"
+dependencies = [
+ "http",
+ "hyper",
+ "hyper-util",
+ "rustls",
+ "tokio",
+ "tokio-rustls",
+ "tower-service",
+]
+
+[[package]]
+name = "hyper-tls"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70206fc6890eaca9fde8a0bf71caa2ddfc9fe045ac9e5c70df101a7dbde866e0"
+dependencies = [
+ "bytes",
+ "http-body-util",
+ "hyper",
+ "hyper-util",
+ "native-tls",
+ "tokio",
+ "tokio-native-tls",
+ "tower-service",
 ]
 
 [[package]]
@@ -799,14 +901,24 @@ version = "0.1.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3c6995591a8f1380fcb4ba966a252a4b29188d51d2b89e3a252f5305be65aea8"
 dependencies = [
+ "base64",
  "bytes",
+ "futures-channel",
  "futures-core",
+ "futures-util",
  "http",
  "http-body",
  "hyper",
+ "ipnet",
+ "libc",
+ "percent-encoding",
  "pin-project-lite",
+ "socket2",
+ "system-configuration",
  "tokio",
  "tower-service",
+ "tracing",
+ "windows-registry",
 ]
 
 [[package]]
@@ -833,6 +945,109 @@ dependencies = [
  "cc",
 ]
 
+[[package]]
+name = "icu_collections"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2984d1cd16c883d7935b9e07e44071dca8d917fd52ecc02c04d5fa0b5a3f191c"
+dependencies = [
+ "displaydoc",
+ "potential_utf",
+ "utf8_iter",
+ "yoke",
+ "zerofrom",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_locale_core"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "92219b62b3e2b4d88ac5119f8904c10f8f61bf7e95b640d25ba3075e6cac2c29"
+dependencies = [
+ "displaydoc",
+ "litemap",
+ "tinystr",
+ "writeable",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_normalizer"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c56e5ee99d6e3d33bd91c5d85458b6005a22140021cc324cea84dd0e72cff3b4"
+dependencies = [
+ "icu_collections",
+ "icu_normalizer_data",
+ "icu_properties",
+ "icu_provider",
+ "smallvec",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_normalizer_data"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "da3be0ae77ea334f4da67c12f149704f19f81d1adf7c51cf482943e84a2bad38"
+
+[[package]]
+name = "icu_properties"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bee3b67d0ea5c2cca5003417989af8996f8604e34fb9ddf96208a033901e70de"
+dependencies = [
+ "icu_collections",
+ "icu_locale_core",
+ "icu_properties_data",
+ "icu_provider",
+ "zerotrie",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_properties_data"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e2bbb201e0c04f7b4b3e14382af113e17ba4f63e2c9d2ee626b720cbce54a14"
+
+[[package]]
+name = "icu_provider"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "139c4cf31c8b5f33d7e199446eff9c1e02decfc2f0eec2c8d71f65befa45b421"
+dependencies = [
+ "displaydoc",
+ "icu_locale_core",
+ "writeable",
+ "yoke",
+ "zerofrom",
+ "zerotrie",
+ "zerovec",
+]
+
+[[package]]
+name = "idna"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3b0875f23caa03898994f6ddc501886a45c7d3d62d04d2d90788d47be1b1e4de"
+dependencies = [
+ "idna_adapter",
+ "smallvec",
+ "utf8_iter",
+]
+
+[[package]]
+name = "idna_adapter"
+version = "1.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cb68373c0d6620ef8105e855e7745e18b0d00d3bdb07fb532e434244cdb9a714"
+dependencies = [
+ "icu_normalizer",
+ "icu_properties",
+]
+
 [[package]]
 name = "indexmap"
 version = "2.14.0"
@@ -843,6 +1058,12 @@ dependencies = [
  "hashbrown",
 ]
 
+[[package]]
+name = "ipnet"
+version = "2.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d98f6fed1fde3f8c21bc40a1abb88dd75e67924f9cffc3ef95607bad8017f8e2"
+
 [[package]]
 name = "is_terminal_polyfill"
 version = "1.70.2"
@@ -894,6 +1115,12 @@ version = "0.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "32a66949e030da00e8c7d4434b251670a91556f4144941d37452769c25d58a53"
 
+[[package]]
+name = "litemap"
+version = "0.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "92daf443525c4cce67b150400bc2316076100ce0b3686209eb8cf3c31612e6f0"
+
 [[package]]
 name = "lock_api"
 version = "0.4.14"
@@ -953,6 +1180,23 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
+[[package]]
+name = "native-tls"
+version = "0.2.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "465500e14ea162429d264d44189adc38b199b62b1c21eea9f69e4b73cb03bbf2"
+dependencies = [
+ "libc",
+ "log",
+ "openssl",
+ "openssl-probe",
+ "openssl-sys",
+ "schannel",
+ "security-framework",
+ "security-framework-sys",
+ "tempfile",
+]
+
 [[package]]
 name = "nom"
 version = "7.1.3"
@@ -1037,6 +1281,49 @@ version = "1.70.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "384b8ab6d37215f3c5301a95a4accb5d64aa607f1fcb26a11b5303878451b4fe"
 
+[[package]]
+name = "openssl"
+version = "0.10.80"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a45fa2aa886c42762255da344f0a0d313e254066c46aad76f300c3d3da62d967"
+dependencies = [
+ "bitflags",
+ "cfg-if",
+ "foreign-types",
+ "libc",
+ "openssl-macros",
+ "openssl-sys",
+]
+
+[[package]]
+name = "openssl-macros"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a948666b637a0f465e8564c73e89d4dde00d72d4d473cc972f390fc3dcee7d9c"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "openssl-probe"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7c87def4c32ab89d880effc9e097653c8da5d6ef28e6b539d313baaacfbafcbe"
+
+[[package]]
+name = "openssl-sys"
+version = "0.9.116"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f28a22dc7140cda5f096e5e7724a6962ca81a7f8bfd2979f9b18c11af56318c4"
+dependencies = [
+ "cc",
+ "libc",
+ "pkg-config",
+ "vcpkg",
+]
+
 [[package]]
 name = "overload"
 version = "0.1.1"
@@ -1069,7 +1356,7 @@ dependencies = [
  "libc",
  "redox_syscall",
  "smallvec",
- "windows-link",
+ "windows-link 0.2.1",
 ]
 
 [[package]]
@@ -1105,6 +1392,12 @@ dependencies = [
  "futures-io",
 ]
 
+[[package]]
+name = "pkg-config"
+version = "0.3.33"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "19f132c84eca552bf34cab8ec81f1c1dcc229b811638f9d283dceabe58c5569e"
+
 [[package]]
 name = "polling"
 version = "3.11.0"
@@ -1119,6 +1412,15 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
+[[package]]
+name = "potential_utf"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0103b1cef7ec0cf76490e969665504990193874ea05c85ff9bab8b911d0a0564"
+dependencies = [
+ "zerovec",
+]
+
 [[package]]
 name = "powerfmt"
 version = "0.2.0"
@@ -1157,6 +1459,7 @@ checksum = "75e669e5202259b5314d1ea5397316ad400819437857b90861765f24c4cf80a2"
 dependencies = [
  "aws-lc-rs",
  "pem",
+ "ring",
  "rustls-pki-types",
  "time",
  "yasna",
@@ -1171,6 +1474,46 @@ dependencies = [
  "bitflags",
 ]
 
+[[package]]
+name = "reqwest"
+version = "0.12.28"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eddd3ca559203180a307f12d114c268abf583f59b03cb906fd0b3ff8646c1147"
+dependencies = [
+ "base64",
+ "bytes",
+ "encoding_rs",
+ "futures-core",
+ "h2",
+ "http",
+ "http-body",
+ "http-body-util",
+ "hyper",
+ "hyper-rustls",
+ "hyper-tls",
+ "hyper-util",
+ "js-sys",
+ "log",
+ "mime",
+ "native-tls",
+ "percent-encoding",
+ "pin-project-lite",
+ "rustls-pki-types",
+ "serde",
+ "serde_json",
+ "serde_urlencoded",
+ "sync_wrapper",
+ "tokio",
+ "tokio-native-tls",
+ "tower",
+ "tower-http",
+ "tower-service",
+ "url",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "web-sys",
+]
+
 [[package]]
 name = "reverse-proxy"
 version = "0.1.0"
@@ -1180,6 +1523,8 @@ dependencies = [
  "axum",
  "clap",
  "hyper",
+ "rcgen",
+ "reqwest",
  "rustls",
  "rustls-acme",
  "rustls-pemfile",
@@ -1320,12 +1665,44 @@ version = "1.0.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9774ba4a74de5f7b1c1451ed6cd5285a32eddb5cccb8cc655a4e50009e06477f"
 
+[[package]]
+name = "schannel"
+version = "0.1.29"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "91c1b7e4904c873ef0710c1f407dde2e6287de2bebc1bbbf7d430bb7cbffd939"
+dependencies = [
+ "windows-sys 0.61.2",
+]
+
 [[package]]
 name = "scopeguard"
 version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
 
+[[package]]
+name = "security-framework"
+version = "3.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b7f4bc775c73d9a02cde8bf7b2ec4c9d12743edf609006c7facc23998404cd1d"
+dependencies = [
+ "bitflags",
+ "core-foundation 0.10.1",
+ "core-foundation-sys",
+ "libc",
+ "security-framework-sys",
+]
+
+[[package]]
+name = "security-framework-sys"
+version = "2.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6ce2691df843ecc5d231c0b14ece2acc3efb62c0a398c7e1d875f3983ce020e3"
+dependencies = [
+ "core-foundation-sys",
+ "libc",
+]
+
 [[package]]
 name = "serde"
 version = "1.0.228"
@@ -1458,6 +1835,12 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "stable_deref_trait"
+version = "1.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6ce2be8dc25455e1f91df71bfa12ad37d7af1092ae736f3a6cd0e37bc7810596"
+
 [[package]]
 name = "strsim"
 version = "0.11.1"
@@ -1486,6 +1869,9 @@ name = "sync_wrapper"
 version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0bf256ce5efdfa370213c1dabab5935a12e49f2c58d15e9eac2870d3b4f27263"
+dependencies = [
+ "futures-core",
+]
 
 [[package]]
 name = "synstructure"
@@ -1498,6 +1884,40 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "system-configuration"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3c879d448e9d986b661742763247d3693ed13609438cf3d006f51f5368a5ba6b"
+dependencies = [
+ "bitflags",
+ "core-foundation 0.9.4",
+ "system-configuration-sys",
+]
+
+[[package]]
+name = "system-configuration-sys"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e1d1b10ced5ca923a1fcb8d03e96b8d3268065d724548c0211415ff6ac6bac4"
+dependencies = [
+ "core-foundation-sys",
+ "libc",
+]
+
+[[package]]
+name = "tempfile"
+version = "3.27.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "32497e9a4c7b38532efcdebeef879707aa9f794296a4f0244f6f69e9bc8574bd"
+dependencies = [
+ "fastrand",
+ "getrandom 0.3.4",
+ "once_cell",
+ "rustix",
+ "windows-sys 0.61.2",
+]
+
 [[package]]
 name = "thiserror"
 version = "1.0.69"
@@ -1578,6 +1998,16 @@ dependencies = [
  "time-core",
 ]
 
+[[package]]
+name = "tinystr"
+version = "0.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c8323304221c2a851516f22236c5722a72eaa19749016521d6dff0824447d96d"
+dependencies = [
+ "displaydoc",
+ "zerovec",
+]
+
 [[package]]
 name = "tokio"
 version = "1.45.1"
@@ -1607,6 +2037,16 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "tokio-native-tls"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bbae76ab933c85776efabc971569dd6119c580d8f5d448769dec1764bf796ef2"
+dependencies = [
+ "native-tls",
+ "tokio",
+]
+
 [[package]]
 name = "tokio-rustls"
 version = "0.26.2"
@@ -1617,6 +2057,19 @@ dependencies = [
  "tokio",
 ]
 
+[[package]]
+name = "tokio-util"
+version = "0.7.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ae9cec805b01e8fc3fd2fe289f89149a9b66dd16786abd8b19cfa7b48cb0098"
+dependencies = [
+ "bytes",
+ "futures-core",
+ "futures-sink",
+ "pin-project-lite",
+ "tokio",
+]
+
 [[package]]
 name = "toml"
 version = "0.8.23"
@@ -1674,6 +2127,24 @@ dependencies = [
  "tracing",
 ]
 
+[[package]]
+name = "tower-http"
+version = "0.6.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4cfcf7e2740e6fc6d4d688b4ef00650406bb94adf4731e43c096c3a19fe40840"
+dependencies = [
+ "bitflags",
+ "bytes",
+ "futures-util",
+ "http",
+ "http-body",
+ "pin-project-lite",
+ "tower",
+ "tower-layer",
+ "tower-service",
+ "url",
+]
+
 [[package]]
 name = "tower-layer"
 version = "0.3.3"
@@ -1744,6 +2215,12 @@ dependencies = [
  "tracing-log",
 ]
 
+[[package]]
+name = "try-lock"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e421abadd41a4225275504ea4d6566923418b7f05506fbc9c0fe86ba7396114b"
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.24"
@@ -1756,6 +2233,24 @@ version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8ecb6da28b8a351d773b68d5825ac39017e680750f980f3a1a85cd8dd28a47c1"
 
+[[package]]
+name = "url"
+version = "2.5.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ff67a8a4397373c3ef660812acab3268222035010ab8680ec4215f38ba3d0eed"
+dependencies = [
+ "form_urlencoded",
+ "idna",
+ "percent-encoding",
+ "serde",
+]
+
+[[package]]
+name = "utf8_iter"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b6c140620e7ffbb22c2dee59cafe6084a59b5ffc27a8859a5f0d494b5d52b6be"
+
 [[package]]
 name = "utf8parse"
 version = "0.2.2"
@@ -1768,6 +2263,21 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ba73ea9cf16a25df0c8caa16c51acb937d5712a8429db78a3ee29d5dcacd3a65"
 
+[[package]]
+name = "vcpkg"
+version = "0.2.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "accd4ea62f7bb7a82fe23066fb0957d48ef677f6eeb8215f372f52e48bb32426"
+
+[[package]]
+name = "want"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bfa7760aed19e106de2c7c0b581b509f2f25d3dacaf737cb82ac61bc6d760b0e"
+dependencies = [
+ "try-lock",
+]
+
 [[package]]
 name = "wasi"
 version = "0.11.1+wasi-snapshot-preview1"
@@ -1796,6 +2306,16 @@ dependencies = [
  "wasm-bindgen-shared",
 ]
 
+[[package]]
+name = "wasm-bindgen-futures"
+version = "0.4.73"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "54568702fabf5d4849ce2b90fadfa64168a097eaf4b351ce9df8b687a0086aaf"
+dependencies = [
+ "js-sys",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "wasm-bindgen-macro"
 version = "0.2.123"
@@ -1828,6 +2348,16 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "web-sys"
+version = "0.3.100"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6e0871acf327f283dc6da28a1696cdc64fb355ba9f935d052021fa77f35cce69"
+dependencies = [
+ "js-sys",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "webpki-roots"
 version = "0.26.11"
@@ -1876,9 +2406,9 @@ checksum = "b8e83a14d34d0623b51dce9581199302a221863196a1dde71a7663a4c2be9deb"
 dependencies = [
  "windows-implement",
  "windows-interface",
- "windows-link",
- "windows-result",
- "windows-strings",
+ "windows-link 0.2.1",
+ "windows-result 0.4.1",
+ "windows-strings 0.5.1",
 ]
 
 [[package]]
@@ -1903,19 +2433,54 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "windows-link"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5e6ad25900d524eaabdbbb96d20b4311e1e7ae1699af4fb28c17ae66c80d798a"
+
 [[package]]
 name = "windows-link"
 version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f0805222e57f7521d6a62e36fa9163bc891acd422f971defe97d64e70d0a4fe5"
 
+[[package]]
+name = "windows-registry"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5b8a9ed28765efc97bbc954883f4e6796c33a06546ebafacbabee9696967499e"
+dependencies = [
+ "windows-link 0.1.3",
+ "windows-result 0.3.4",
+ "windows-strings 0.4.2",
+]
+
+[[package]]
+name = "windows-result"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "56f42bd332cc6c8eac5af113fc0c1fd6a8fd2aa08a0119358686e5160d0586c6"
+dependencies = [
+ "windows-link 0.1.3",
+]
+
 [[package]]
 name = "windows-result"
 version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7781fa89eaf60850ac3d2da7af8e5242a5ea78d1a11c49bf2910bb5a73853eb5"
 dependencies = [
- "windows-link",
+ "windows-link 0.2.1",
+]
+
+[[package]]
+name = "windows-strings"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "56e6c93f3a0c3b36176cb1327a4958a0353d5d166c2a35cb268ace15e91d3b57"
+dependencies = [
+ "windows-link 0.1.3",
 ]
 
 [[package]]
@@ -1924,7 +2489,7 @@ version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7837d08f69c77cf6b07689544538e017c1bfcf57e34b4c0ff58e6c2cd3b37091"
 dependencies = [
- "windows-link",
+ "windows-link 0.2.1",
 ]
 
 [[package]]
@@ -1942,7 +2507,7 @@ version = "0.61.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ae137229bcbd6cdf0f7b80a31df61766145077ddf49416a728b02cb3921ff3fc"
 dependencies = [
- "windows-link",
+ "windows-link 0.2.1",
 ]
 
 [[package]]
@@ -2024,6 +2589,12 @@ version = "0.57.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1ebf944e87a7c253233ad6766e082e3cd714b5d03812acc24c318f549614536e"
 
+[[package]]
+name = "writeable"
+version = "0.6.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1ffae5123b2d3fc086436f8834ae3ab053a283cfac8fe0a0b8eaae044768a4c4"
+
 [[package]]
 name = "x509-parser"
 version = "0.16.0"
@@ -2050,12 +2621,89 @@ dependencies = [
  "time",
 ]
 
+[[package]]
+name = "yoke"
+version = "0.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "709fe23a0424b6a435d82152b1bd3fdfb0833487d5fa90d05d42762a9891fef5"
+dependencies = [
+ "stable_deref_trait",
+ "yoke-derive",
+ "zerofrom",
+]
+
+[[package]]
+name = "yoke-derive"
+version = "0.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "de844c262c8848816172cef550288e7dc6c7b7814b4ee56b3e1553f275f1858e"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "synstructure",
+]
+
+[[package]]
+name = "zerofrom"
+version = "0.1.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0ec05a11813ea801ff6d75110ad09cd0824ddba17dfe17128ea0d5f68e6c5272"
+dependencies = [
+ "zerofrom-derive",
+]
+
+[[package]]
+name = "zerofrom-derive"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "11532158c46691caf0f2593ea8358fed6bbf68a0315e80aae9bd41fbade684a1"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "synstructure",
+]
+
 [[package]]
 name = "zeroize"
 version = "1.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b97154e67e32c85465826e8bcc1c59429aaaf107c1e4a9e53c8d8ccd5eff88d0"
 
+[[package]]
+name = "zerotrie"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0f9152d31db0792fa83f70fb2f83148effb5c1f5b8c7686c3459e361d9bc20bf"
+dependencies = [
+ "displaydoc",
+ "yoke",
+ "zerofrom",
+]
+
+[[package]]
+name = "zerovec"
+version = "0.11.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "90f911cbc359ab6af17377d242225f4d75119aec87ea711a880987b18cd7b239"
+dependencies = [
+ "yoke",
+ "zerofrom",
+ "zerovec-derive",
+]
+
+[[package]]
+name = "zerovec-derive"
+version = "0.11.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "625dc425cab0dca6dc3c3319506e6593dcb08a9f387ea3b284dbd52a92c40555"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "zmij"
 version = "1.0.21"
diff --git a/Cargo.toml b/Cargo.toml
index 8fc3a52..b886953 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,6 +4,10 @@ version = "0.1.0"
 edition = "2021"
 license = "MIT OR Apache-2.0"
 
+[lib]
+name = "reverse_proxy"
+path = "src/lib.rs"
+
 [[bin]]
 name = "reverse-proxy"
 path = "src/main.rs"
@@ -26,4 +30,8 @@ rustls-pki-types = "=1.12.0"
 clap = { version = "=4.6.1", features = ["derive"] }
 signal-hook = "=0.3.18"
 anyhow = "=1.0.102"
-thiserror = "=2.0.18"
\ No newline at end of file
+thiserror = "=2.0.18"
+
+[dev-dependencies]
+rcgen = "=0.13"
+reqwest = { version = "=0.12", features = ["json"] }
\ No newline at end of file
diff --git a/src/config/mod.rs b/src/config/mod.rs
index 022a6a3..072ddc9 100644
--- a/src/config/mod.rs
+++ b/src/config/mod.rs
@@ -1,3 +1,4 @@
 pub mod dynamic_config;
 pub mod static_config;
+pub mod test_fixtures;
 pub mod validation;
diff --git a/src/config/static_config.rs b/src/config/static_config.rs
index 4f26c95..3949ca5 100644
--- a/src/config/static_config.rs
+++ b/src/config/static_config.rs
@@ -1,7 +1,7 @@
 use serde::Deserialize;
 
 #[allow(dead_code)]
-#[derive(Debug, Deserialize)]
+#[derive(Debug, Clone, Deserialize)]
 pub struct StaticConfig {
     pub listeners: Vec<ListenerConfig>,
     #[serde(default)]
@@ -32,7 +32,7 @@ fn default_shutdown_timeout_secs() -> u64 {
 }
 
 #[allow(dead_code)]
-#[derive(Debug, Deserialize)]
+#[derive(Debug, Clone, Deserialize)]
 pub struct ListenerConfig {
     pub bind_addr: String,
     #[serde(default = "default_http_port")]
@@ -55,7 +55,7 @@ fn default_https_port() -> u16 {
 }
 
 #[allow(dead_code)]
-#[derive(Debug, Deserialize)]
+#[derive(Debug, Clone, Deserialize)]
 pub struct TlsConfig {
     pub mode: String,
     #[serde(default)]
@@ -76,7 +76,7 @@ fn default_acme_directory() -> String {
 }
 
 #[allow(dead_code)]
-#[derive(Debug, Deserialize)]
+#[derive(Debug, Clone, Deserialize)]
 pub struct LoggingConfig {
     #[serde(default = "default_log_level")]
     pub level: String,
diff --git a/src/config/test_fixtures.rs b/src/config/test_fixtures.rs
new file mode 100644
index 0000000..c29a6cc
--- /dev/null
+++ b/src/config/test_fixtures.rs
@@ -0,0 +1,65 @@
+use crate::config::dynamic_config::{BodyConfig, DynamicConfig, RateLimitConfig, SiteConfig};
+use crate::config::static_config::{ListenerConfig, LoggingConfig, StaticConfig, TlsConfig};
+
+pub fn test_static_config() -> StaticConfig {
+    StaticConfig {
+        listeners: vec![ListenerConfig {
+            bind_addr: "127.0.0.1".to_string(),
+            http_port: 80,
+            https_port: 443,
+            tls: TlsConfig {
+                mode: "manual".to_string(),
+                acme_domains: vec![],
+                acme_cache_dir: String::new(),
+                acme_directory: "production".to_string(),
+                cert_path: "/tmp/test-cert.pem".to_string(),
+                key_path: "/tmp/test-key.pem".to_string(),
+            },
+            sites: vec![],
+        }],
+        allow_wildcard_bind: false,
+        health_check_port: 9900,
+        admin_socket_path: "/tmp/reverse-proxy-test/admin.sock".to_string(),
+        shutdown_timeout_secs: 30,
+        logging: LoggingConfig::default(),
+    }
+}
+
+pub fn test_dynamic_config() -> DynamicConfig {
+    DynamicConfig {
+        sites: vec![SiteConfig {
+            host: "test.local".to_string(),
+            upstream: "127.0.0.1:8080".to_string(),
+            upstream_scheme: "http".to_string(),
+            upstream_connect_timeout_secs: 5,
+            upstream_request_timeout_secs: 60,
+        }],
+        rate_limit: RateLimitConfig {
+            requests_per_second: 10,
+            burst: 20,
+        },
+        body: BodyConfig {
+            limit_bytes: 104857600,
+        },
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_static_config_fixture_is_valid() {
+        let config = test_static_config();
+        assert!(!config.listeners.is_empty());
+        assert_eq!(config.health_check_port, 9900);
+    }
+
+    #[test]
+    fn test_dynamic_config_fixture_is_valid() {
+        let config = test_dynamic_config();
+        assert!(!config.sites.is_empty());
+        assert_eq!(config.rate_limit.requests_per_second, 10);
+        assert_eq!(config.body.limit_bytes, 104857600);
+    }
+}
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..59977c2
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,8 @@
+pub mod admin;
+pub mod config;
+pub mod health;
+pub mod logging;
+pub mod proxy;
+pub mod rate_limit;
+pub mod shutdown;
+pub mod tls;
diff --git a/src/main.rs b/src/main.rs
index 4b91096..7df3ca4 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,12 +1,3 @@
-mod admin;
-mod config;
-mod health;
-mod logging;
-mod proxy;
-mod rate_limit;
-mod shutdown;
-mod tls;
-
 fn main() {
     tracing::info!("reverse-proxy starting");
 }
diff --git a/tests/helpers/http_test_helper.rs b/tests/helpers/http_test_helper.rs
new file mode 100644
index 0000000..511a9c0
--- /dev/null
+++ b/tests/helpers/http_test_helper.rs
@@ -0,0 +1,47 @@
+use std::net::SocketAddr;
+
+use axum::routing::get;
+use axum::Router;
+use tokio::net::TcpListener;
+
+pub struct TestUpstream {
+    pub addr: SocketAddr,
+    pub shutdown_tx: tokio::sync::oneshot::Sender<()>,
+}
+
+impl TestUpstream {
+    pub async fn spawn<F>(handler_factory: F) -> Self
+    where
+        F: FnOnce() -> Router,
+    {
+        let listener = TcpListener::bind("127.0.0.1:0").await.unwrap();
+        let addr = listener.local_addr().unwrap();
+        let (shutdown_tx, shutdown_rx) = tokio::sync::oneshot::channel::<()>();
+
+        let app = handler_factory();
+        tokio::spawn(async move {
+            axum::serve(listener, app)
+                .with_graceful_shutdown(async {
+                    let _ = shutdown_rx.await;
+                })
+                .await
+                .unwrap();
+        });
+
+        Self { addr, shutdown_tx }
+    }
+
+    pub async fn spawn_ok() -> Self {
+        Self::spawn(|| Router::new().route("/", get(|| async { "ok" }))).await
+    }
+
+    #[allow(dead_code)]
+    pub fn url(&self) -> String {
+        format!("http://{}", self.addr)
+    }
+
+    #[allow(dead_code)]
+    pub fn upstream_addr(&self) -> String {
+        format!("127.0.0.1:{}", self.addr.port())
+    }
+}
diff --git a/tests/helpers/mod.rs b/tests/helpers/mod.rs
new file mode 100644
index 0000000..fc1ffbd
--- /dev/null
+++ b/tests/helpers/mod.rs
@@ -0,0 +1,2 @@
+pub mod http_test_helper;
+pub mod tls_test_helper;
diff --git a/tests/helpers/tls_test_helper.rs b/tests/helpers/tls_test_helper.rs
new file mode 100644
index 0000000..417746a
--- /dev/null
+++ b/tests/helpers/tls_test_helper.rs
@@ -0,0 +1,28 @@
+use rcgen::{CertificateParams, DistinguishedName, KeyPair};
+
+pub struct SelfSignedCert {
+    pub cert_pem: String,
+    pub key_pem: String,
+}
+
+pub fn generate_self_signed_cert(domains: &[&str]) -> SelfSignedCert {
+    let mut params = CertificateParams::new(
+        domains
+            .iter()
+            .map(|s| s.to_string())
+            .collect::<Vec<String>>(),
+    )
+    .unwrap();
+    params.distinguished_name = DistinguishedName::new();
+    params
+        .distinguished_name
+        .push(rcgen::DnType::CommonName, "test.local");
+
+    let key_pair = KeyPair::generate().unwrap();
+    let cert = params.self_signed(&key_pair).unwrap();
+
+    SelfSignedCert {
+        cert_pem: cert.pem(),
+        key_pem: key_pair.serialize_pem(),
+    }
+}
diff --git a/tests/integration_test.rs b/tests/integration_test.rs
new file mode 100644
index 0000000..bdac0e0
--- /dev/null
+++ b/tests/integration_test.rs
@@ -0,0 +1,32 @@
+mod helpers;
+
+#[tokio::test]
+async fn test_upstream_spawn_and_connect() {
+    let upstream = helpers::http_test_helper::TestUpstream::spawn_ok().await;
+    let client = reqwest::Client::new();
+    let resp = client
+        .get(format!("http://127.0.0.1:{}/", upstream.addr.port()))
+        .send()
+        .await
+        .unwrap();
+    assert_eq!(resp.status(), reqwest::StatusCode::OK);
+    let _ = upstream.shutdown_tx.send(());
+}
+
+#[test]
+fn test_self_signed_cert_generation() {
+    let cert = helpers::tls_test_helper::generate_self_signed_cert(&["test.local"]);
+    assert!(!cert.cert_pem.is_empty());
+    assert!(!cert.key_pem.is_empty());
+    assert!(cert.cert_pem.contains("BEGIN CERTIFICATE"));
+    assert!(cert.key_pem.contains("BEGIN"));
+}
+
+#[test]
+fn test_config_fixtures() {
+    let static_config = reverse_proxy::config::test_fixtures::test_static_config();
+    assert!(!static_config.listeners.is_empty());
+
+    let dynamic_config = reverse_proxy::config::test_fixtures::test_dynamic_config();
+    assert!(!dynamic_config.sites.is_empty());
+}