Use directories from tempfile for unit testing

3 files changed, 482 insertions, 53 deletions

diff --git a/Cargo.lock b/Cargo.lock
index e54bf77..0118211 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3,5 +3,446 @@
 version = 4
 
 [[package]]
+name = "anyhow"
+version = "1.0.102"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7f202df86484c868dbad7eaa557ef785d5c66295e41b460ef922eca0723b842c"
+
+[[package]]
+name = "bitflags"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "84d7ced0ae9557296835c32bf1b1e02b44c746701f898460fb000d7eaa84f00a"
+
+[[package]]
+name = "cfg-if"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"
+
+[[package]]
+name = "equivalent"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "877a4ace8713b0bcf2a4e7eec82529c029f1d0619886d18145fea96c3ffe5c0f"
+
+[[package]]
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+version = "0.3.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "39cab71617ae0d63f51a36d69f866391735b51691dbda63cf6f96d042b63efeb"
+dependencies = [
+ "libc",
+ "windows-sys",
+]
+
+[[package]]
+name = "fastrand"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9f1f227452a390804cdb637b74a86990f2a7d7ba4b7d5693aac9b4dd6defd8d6"
+
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+checksum = "d9c4f5dac5e15c24eb999c26181a6ca40b39fe946cbe4c263c7209467bc83af2"
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+[[package]]
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+checksum = "0de51e6874e94e7bf76d726fc5d13ba782deca734ff60d5bb2fb2607c7406555"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "r-efi",
+ "wasip2",
+ "wasip3",
+]
+
+[[package]]
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+version = "0.15.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9229cfe53dfd69f0609a49f65461bd93001ea1ef889cd5529dd176593f5338a1"
+dependencies = [
+ "foldhash",
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+[[package]]
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+version = "0.17.1"
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+dependencies = [
+ "equivalent",
+ "hashbrown 0.17.1",
+ "serde",
+ "serde_core",
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+[[package]]
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+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "953f07c43838f8e6f9758cab68bf5bed85465e7587ebe0b823f1bcd81978ad3a"
+
+[[package]]
+name = "memchr"
+version = "2.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6b947ae49db0d222b1dbc6b113ce7248a3fc3a6ca21b696717bfc000ba4484d8"
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+[[package]]
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+version = "1.21.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9f7c3e4beb33f85d45ae3e3a1792185706c8e16d043238c593331cc7cd313b50"
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+[[package]]
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+checksum = "479ca8adacdd7ce8f1fb39ce9ecccbfe93a3f1344b3d0d97f20bc0196208f62b"
+dependencies = [
+ "proc-macro2",
+ "syn",
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+ "unicode-ident",
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+[[package]]
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+checksum = "41f2619966050689382d2b44f664f4bc593e129785a36d6ee376ddf37259b924"
+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
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+version = "6.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f8dcc9c7d52a811697d2151c701e0d08956f92b0e24136cf4cf27b57a6a0d9bf"
+
+[[package]]
 name = "repo2markdown"
 version = "0.1.0"
+dependencies = [
+ "tempfile",
+]
+
+[[package]]
+name = "rustix"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b6fe4565b9518b83ef4f91bb47ce29620ca828bd32cb7e408f0062e9930ba190"
+dependencies = [
+ "bitflags",
+ "errno",
+ "libc",
+ "linux-raw-sys",
+ "windows-sys",
+]
+
+[[package]]
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+version = "1.0.28"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8a7852d02fc848982e0c167ef163aaff9cd91dc640ba85e263cb1ce46fae51cd"
+
+[[package]]
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+checksum = "9a8e94ea7f378bd32cbbd37198a4a91436180c5bb472411e48b5ec2e2124ae9e"
+dependencies = [
+ "serde_core",
+]
+
+[[package]]
+name = "serde_core"
+version = "1.0.228"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "41d385c7d4ca58e59fc732af25c3983b67ac852c1a25000afe1175de458b67ad"
+dependencies = [
+ "serde_derive",
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+
+[[package]]
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+ "proc-macro2",
+ "quote",
+ "syn",
+]
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+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
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+[[package]]
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+version = "3.27.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "32497e9a4c7b38532efcdebeef879707aa9f794296a4f0244f6f69e9bc8574bd"
+dependencies = [
+ "fastrand",
+ "getrandom",
+ "once_cell",
+ "rustix",
+ "windows-sys",
+]
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+[[package]]
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+ "wit-bindgen 0.57.1",
+]
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+]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "990065f2fe63003fe337b932cfb5e3b80e0b4d0f5ff650e6985b1048f62c8319"
+dependencies = [
+ "leb128fmt",
+ "wasmparser",
+]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+ "wit-parser",
+]
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+ "heck",
+ "indexmap",
+ "prettyplease",
+ "syn",
+ "wasm-metadata",
+ "wit-bindgen-core",
+ "wit-component",
+]
+
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+ "proc-macro2",
+ "quote",
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+ "wit-bindgen-rust",
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+ "indexmap",
+ "log",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "wasm-encoder",
+ "wasm-metadata",
+ "wasmparser",
+ "wit-parser",
+]
+
+[[package]]
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+checksum = "ecc8ac4bc1dc3381b7f59c34f00b67e18f910c2c0f50015669dde7def656a736"
+dependencies = [
+ "anyhow",
+ "id-arena",
+ "indexmap",
+ "log",
+ "semver",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "unicode-xid",
+ "wasmparser",
+]
+
+[[package]]
+name = "zmij"
+version = "1.0.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8848ee67ecc8aedbaf3e4122217aff892639231befc6a1b58d29fff4c2cabaa"
diff --git a/Cargo.toml b/Cargo.toml
index 50004f0..032a183 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,3 +4,4 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
+tempfile = "3"
diff --git a/src/main.rs b/src/main.rs
index d2da889..de394a4 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -48,9 +48,11 @@ pub fn run<R: Read, W: Write>(
 
 #[cfg(test)]
 mod tests {
+    use std::fs;
     use std::io::Cursor;
     use std::path::Path;
-    use std::{env, fs};
+
+    use tempfile::tempdir;
 
     use super::run;
 
@@ -65,27 +67,26 @@ mod tests {
 
     #[test]
     fn cli_with_empty_input_produces_empty_project() {
+        let temp_dir = tempdir().unwrap();
         let input = Cursor::new(b"");
         let mut output = Vec::new();
-        let root = Path::new(".");
-        let origin_base = Path::new(".");
+        let root = temp_dir.path();
+        let origin_base = temp_dir.path();
 
-        run(input, &mut output, root, origin_base).unwrap();
+        run(input, &mut output, &root, &origin_base).unwrap();
 
         assert_eq!(String::from_utf8(output).unwrap(), "# Project name\n");
     }
 
     #[test]
     fn cli_reads_single_file_from_stdin() {
-        // create a temporary file
-        let path = "test_main.rs";
-        fs::write(path, "fn main() {}").unwrap();
-
-        // null-delimited input
-        let input = Cursor::new(format!("{}\0", path).into_bytes());
+        let temp_dir = tempdir().unwrap();
+        let origin_base = temp_dir.path();
+        let input = Cursor::new(b"test_main.rs\0");
         let mut output = Vec::new();
-        let root = Path::new(".");
-        let origin_base = Path::new(".");
+        let root = temp_dir.path();
+
+        fs::write(origin_base.join("test_main.rs"), "fn main() {}").unwrap();
 
         run(input, &mut output, root, origin_base).unwrap();
 
@@ -93,20 +94,18 @@ mod tests {
 
         assert!(output_str.contains("### \"test_main.rs\""));
         assert!(output_str.contains("fn main() {}"));
-
-        // cleanup
-        fs::remove_file(path).unwrap();
     }
 
     #[test]
     fn cli_reads_multiple_files_in_order() {
-        fs::write("a.rs", "A").unwrap();
-        fs::write("b.rs", "B").unwrap();
-
+        let temp_dir = tempdir().unwrap();
+        let origin_base = temp_dir.path();
         let input = Cursor::new(b"a.rs\0b.rs\0");
         let mut output = Vec::new();
-        let root = Path::new(".");
-        let origin_base = Path::new(".");
+        let root = temp_dir.path();
+
+        fs::write(origin_base.join("a.rs"), "A").unwrap();
+        fs::write(origin_base.join("b.rs"), "B").unwrap();
 
         run(input, &mut output, root, origin_base).unwrap();
 
@@ -116,43 +115,39 @@ mod tests {
         let b_pos = output.find("b.rs").unwrap();
 
         assert!(a_pos < b_pos);
-
-        fs::remove_file("a.rs").unwrap();
-        fs::remove_file("b.rs").unwrap();
     }
 
     #[test]
     fn cli_normalizes_paths_before_rendering() {
-        fs::create_dir_all("test").unwrap();
-        fs::write("test/main.rs", "fn main() {}").unwrap();
-
+        let temp_dir = tempdir().unwrap();
+        let origin_base = temp_dir.path();
         let input = Cursor::new(b"test/./main.rs\0");
         let mut output = Vec::new();
-        let root = Path::new(".");
-        let origin_base = Path::new(".");
+        let root = temp_dir.path();
+
+        let write_dir = temp_dir.path().join("test");
+        fs::create_dir_all(&write_dir).unwrap();
+        fs::write(write_dir.join("main.rs"), "fn main() {}").unwrap();
 
         run(input, &mut output, root, origin_base).unwrap();
 
         let output = String::from_utf8(output).unwrap();
 
         assert!(output.contains("### \"test/main.rs\""));
-
-        fs::remove_file("test/main.rs").unwrap();
-        fs::remove_dir("test").unwrap();
     }
 
     #[test]
     fn cli_reads_from_origin_but_outputs_relative_to_root() {
-        fs::create_dir_all("sandbox/src").unwrap();
-        fs::write("sandbox/src/main.rs", "fn main() {}").unwrap();
-
-        // stdin provides path relative to origin_base
+        let temp_dir = tempdir().unwrap();
+        let origin_base = temp_dir.path().join("sandbox/src");
         let input = Cursor::new(b"main.rs\0");
         let mut output = Vec::new();
-        let root = Path::new("project");
-        let origin_base = Path::new("sandbox/src");
+        let root = temp_dir.path().join("project");
 
-        run(input, &mut output, root, origin_base).unwrap();
+        fs::create_dir_all(&origin_base).unwrap();
+        fs::write(origin_base.join("main.rs"), "fn main() {}").unwrap();
+
+        run(input, &mut output, &root, &origin_base).unwrap();
 
         let output = String::from_utf8(output).unwrap();
 
@@ -161,32 +156,24 @@ mod tests {
 
         // Must contain normalized path → proves normalization applied
         assert!(output.contains("sandbox/src/main.rs"));
-
-        fs::remove_file("sandbox/src/main.rs").unwrap();
-        fs::remove_dir("sandbox/src").unwrap();
-        fs::remove_dir("sandbox").unwrap();
     }
 
     #[test]
     fn cli_ignores_origin_when_input_path_is_absolute() {
-        let temp_dir = env::temp_dir();
-        let filepath = temp_dir.join("test_main.rs");
-        fs::create_dir_all(temp_dir).unwrap();
-        fs::write(&filepath, "fn main() {}").unwrap();
-
-        // stdin provides path relative to origin_base
+        let temp_dir1 = tempdir().unwrap();
+        let temp_dir2 = tempdir().unwrap();
+        let origin_base = temp_dir2.path();
+        let filepath = temp_dir1.path().join("test_main.rs");
         let input = Cursor::new(paths_to_null_sep_bytes(&[&filepath]));
         let mut output = Vec::new();
-        let root = Path::new("project");
-        let origin_base = Path::new("sandbox/src");
+        let root = temp_dir2.path();
+        fs::write(&filepath, "fn main() {}").unwrap();
 
-        run(input, &mut output, root, origin_base).unwrap();
+        run(input, &mut output, &root, &origin_base).unwrap();
 
         let output = String::from_utf8(output).unwrap();
 
         // Must contain file content → proves correct reading
         assert!(output.contains("fn main() {}"));
-
-        fs::remove_file(filepath).unwrap();
     }
 }