Make web tests no longer mutate original files

server/tests/test_util/mod.rs

@@ -1,5 +1,11 @@
+use std::fs::{create_dir, copy};
+use std::path::Path;
+use std::io;
+
 use rouille::Request;
 
+use walkdir::WalkDir;
+
 use librojo::web::Server;
 
 pub trait HttpTestUtil {
@@ -20,3 +26,29 @@ impl HttpTestUtil for Server {
         body
     }
 }
+
+pub fn copy_recursive(from: &Path, to: &Path) -> io::Result<()> {
+    for entry in WalkDir::new(from) {
+        let entry = entry?;
+        let path = entry.path();
+        let new_path = to.join(path.strip_prefix(from).unwrap());
+
+        let file_type = entry.file_type();
+
+        if file_type.is_dir() {
+            match create_dir(new_path) {
+                Ok(_) => {},
+                Err(err) => match err.kind() {
+                    io::ErrorKind::AlreadyExists => {},
+                    _ => panic!(err),
+                }
+            }
+        } else if file_type.is_file() {
+            copy(path, new_path)?;
+        } else {
+            unimplemented!("no symlinks please");
+        }
+    }
+
+    Ok(())
+}