diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
new file mode 100644
index 0000000..7858035
--- /dev/null
+++ b/.github/workflows/test.yml
@@ -0,0 +1,67 @@
+name: test
+on:
+  push: 
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  test-linux:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - run: rustup toolchain install stable --profile minimal
+      - name: "Cache cargo"
+        id: cache-cargo
+        uses: "actions/cache@v4"
+        with:
+          path: |
+            ~/.cargo/bin/
+            ~/.cargo/registry/index/
+            ~/.cargo/registry/cache/
+            ~/.cargo/git/db/
+            lib/target/
+          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: ${{ runner.os }}-cargo-
+      - uses: extractions/setup-just@v2
+      - run: just test
+  test-macos:
+    runs-on: macos-latest
+    steps:
+      - uses: actions/checkout@v4
+      - run: rustup toolchain install stable --profile minimal
+      - name: "Cache cargo"
+        id: cache-cargo
+        uses: "actions/cache@v4"
+        with:
+          path: |
+            ~/.cargo/bin/
+            ~/.cargo/registry/index/
+            ~/.cargo/registry/cache/
+            ~/.cargo/git/db/
+            lib/target/
+          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: ${{ runner.os }}-cargo-
+      - uses: extractions/setup-just@v2
+      - run: just test
+  test-windows:
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: "Cache cargo"
+        id: cache-cargo
+        uses: "actions/cache@v4"
+        with:
+          path: |
+            ~/.cargo/bin/
+            ~/.cargo/registry/index/
+            ~/.cargo/registry/cache/
+            ~/.cargo/git/db/
+            lib/target/
+          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: ${{ runner.os }}-cargo-
+      - uses: extractions/setup-just@v2
+      - run: just test
diff --git a/lib/src/lib.rs b/lib/src/lib.rs
index 8a2b7e2..a5f19b4 100644
--- a/lib/src/lib.rs
+++ b/lib/src/lib.rs
@@ -20,6 +20,9 @@ use std::fs::File;
 use std::io::{BufRead, BufReader, BufWriter, Cursor, Read, Seek, Write};
 use std::path::{Path, PathBuf};
 
+const LINE_ENDING: &str = if cfg!(unix) { "\n" } else { "\r\n" };
+
+
 fn open_file_read(file_path: &str) -> Result<SharedFileLock, Error> {
     let file = File::open(file_path)
         .map_err(|_| Error::FileError(format!("Failed to open file: {file_path}")))?;
@@ -153,14 +156,17 @@ where
 
     output[0] = original_lines[0].to_string();
 
-    let mut joined = output.join("\n");
-    if original.ends_with('\n') {
-        if !joined.ends_with('\n') {
-            joined.push('\n');
+    let mut joined = output.join(LINE_ENDING);
+    if original.ends_with(LINE_ENDING) {
+        if !joined.ends_with(LINE_ENDING) {
+            joined.push_str(LINE_ENDING);
         }
     } else {
-        if joined.ends_with('\n') {
-            joined.remove(joined.len() - 1);
+        if joined.ends_with(LINE_ENDING) {
+            joined = joined
+                .strip_suffix(LINE_ENDING)
+                .map(|x| x.to_string())
+                .unwrap_or(joined);
         }
     }
 
@@ -221,6 +227,7 @@ fn write_project(buf: &mut impl Write, element: &Element, indent: &str) -> Resul
 
         let config = EmitterConfig::new()
             .perform_indent(true)
+            .line_separator(LINE_ENDING)
             .indent_string(indent.to_string());
 
         element
@@ -255,11 +262,20 @@ fn write_project_to_string(element: &Element, indent: &str) -> Result<String, Er
 
 #[cfg(debug_assertions)]
 fn write_log<T: std::fmt::Display>(name: &str, input: T) -> Result<(), Error> {
+    let file_dir = if cfg!(unix) {
+        "/tmp/fs-tools.log".to_string()
+    } else {
+        Path::new(&std::env::var("TEMP").unwrap())
+            .join("fs-tools.log")
+            .to_string_lossy()
+            .to_string()
+    };
+
     let mut file = File::options()
         .create(true)
         .write(true)
         .append(true)
-        .open("/tmp/fs-tools.log")
+        .open(file_dir)
         .map_err(Error::IOError)?;
 
     writeln!(file, "{}: {}", name, input).map_err(Error::IOError)?;
diff --git a/lib/src/tests/mod.rs b/lib/src/tests/mod.rs
index 4f5d906..7a072e7 100644
--- a/lib/src/tests/mod.rs
+++ b/lib/src/tests/mod.rs
@@ -21,6 +21,8 @@ fn find_project() {
     let proj = crate::find_fsproj(files_dir.join("test_file.fs").to_str().unwrap(), 1);
     let expected = files_dir
         .join("project.fsproj")
+        .canonicalize()
+        .unwrap()
         .to_str()
         .unwrap()
         .to_owned();
@@ -29,13 +31,14 @@ fn find_project() {
 }
 
 #[test]
-fn find_project_nested() {
+fn find_project_nested() -> AnyResult<()> {
     let files_dir = get_files_dir();
 
     let test_file = files_dir.join("directory").join("inside_directory.fs");
 
     let expected = files_dir
         .join("project.fsproj")
+        .canonicalize()?
         .to_str()
         .unwrap()
         .to_owned();
@@ -45,6 +48,8 @@ fn find_project_nested() {
 
     let proj = crate::find_fsproj(test_file.to_str().unwrap(), 2);
     assert_eq!(proj, Some(expected));
+
+    Ok(())
 }
 
 #[test]
@@ -112,7 +117,7 @@ fn set_files() -> AnyResult<()> {
 
     let fixed = fix_start_and_end(Cursor::new(result_string), Cursor::new(expected_file))?;
 
-    assert_eq!(fixed, expected_file);
+    core::assert_eq!(fixed, expected_file);
 
     Ok(())
 }