Run windows on ci (#150)

**Stack**:
- #152
- #151
- #150 ⬅
- #149


⚠️ *Part of a stack created by [spr](https://github.com/ejoffe/spr). Do
not merge manually using the UI - doing so may have unexpected results.*

Author: ksew1

.github/workflows/ci.yml

@@ -9,14 +9,17 @@ on:
 jobs:
   tests:
     name: Tests
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ ubuntu-latest, windows-latest ]
     steps:
       - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable
       - uses: Swatinem/rust-cache@f0deed1e0edfc6a9be95417288c0e1099b1eeec3
-      - uses: hrishikesh-kadam/setup-lcov@v1
+      - uses: hrishikesh-kadam/setup-lcov@6c1aa0cc9e1c02f9f58f01ac599f1064ccc83470 # v1.1.0
       - uses: software-mansion/setup-scarb@v1
-      - uses: foundry-rs/setup-snfoundry@v3
+      - uses: foundry-rs/setup-snfoundry@v4
       - run: cargo test --release
 
   rustfmt:

Cargo.lock

@@ -30,3 +30,4 @@ indoc = "2.0.5"
 regex = "1.11.1"
 rayon = "1.10.0"
 walkdir = "2.5.0"
+which = "7.0.2"

Cargo.toml

@@ -14,4 +14,5 @@ walkdir.workspace = true
 [dev-dependencies]
 cairo-coverage-test-utils = { path = "../cairo-coverage-test-utils" }
 assert_fs.workspace = true
-snapbox.workspace = true
+snapbox.workspace = true
+which.workspace = true

crates/cairo-coverage/Cargo.toml

@@ -5,6 +5,7 @@ use camino::Utf8PathBuf;
 use snapbox::cmd::{cargo_bin, Command as SnapboxCommand};
 use std::fs;
 use std::path::PathBuf;
+use which::which;
 
 pub struct TestProject {
     dir: TempDir,
@@ -92,7 +93,9 @@ impl TestProject {
     }
 
     fn run_genhtml(self) -> Self {
-        SnapboxCommand::new("genhtml")
+        // on windows, we need to use the full path to genhtml or otherwise this will fail
+        let path = which("genhtml").unwrap();
+        SnapboxCommand::new(path)
             .arg(self.output_lcov_path())
             .arg("--output-directory")
             .arg(self.dir.path())
@@ -114,6 +117,16 @@ impl TestProjectOutput {
                 "{dir}",
                 &self.0.dir.canonicalize().unwrap().display().to_string(),
             );
+
+        let expected = if cfg!(target_os = "windows") {
+            expected
+                .replace("\r\n", "\n") // Normalize line endings
+                .replace('/', r"\") // Convert Unix-style paths to Windows
+                .replace(r"\\?\", "") // Remove extended path prefix
+        } else {
+            expected
+        };
+
         assert_eq!(content, expected);
     }