git ignore only cppwinrt output

.gitignore

@@ -3,4 +3,4 @@
 /target
 *.lock
 *.winmd
-winrt
+**/src/winrt

crates/tests/winrt/constructors/Cargo.toml

@@ -0,0 +1,24 @@
+[package]
+name = "test_constructors"
+version = "0.0.0"
+edition = "2021"
+publish = false
+
+[lib]
+crate-type = ["cdylib"]
+doc = false
+doctest = false
+
+[build-dependencies.windows-bindgen]
+workspace = true
+
+[dependencies.windows-core]
+workspace = true
+
+[dependencies.windows]
+workspace = true
+features = [
+    "implement",
+    "Foundation",
+    "Win32_System_WinRT",
+]

crates/tests/winrt/constructors/build.rs

@@ -0,0 +1,33 @@
+fn main() {
+    let mut command = std::process::Command::new("midlrt.exe");
+    command.args([
+        "/winrt",
+        "/nomidl",
+        "/h",
+        "nul",
+        "/metadata_dir",
+        "../../../libs/bindgen/default",
+        "/reference",
+        "../../../libs/bindgen/default/Windows.winmd",
+        "/winmd",
+        "metadata.winmd",
+        "src/metadata.idl",
+    ]);
+
+    if !command.status().unwrap().success() {
+        panic!("Failed to run midlrt");
+    }
+
+    windows_bindgen::bindgen([
+        "--in",
+        "metadata.winmd",
+        "--out",
+        "src/bindings.rs",
+        "--filter",
+        "test_constructors",
+        "--config",
+        "implement",
+        "no-bindgen-comment",
+    ])
+    .unwrap();
+}