implement file.mkdir (#252)

* implement file.mkdir

* remove extra remove_dir

* documentation of file.mkdir

* Adding error cases to documentation

---------

Co-authored-by: 1nv8rZim <msf9542@rit.edu>

docs/_docs/user-guide/eldritch.md

@@ -178,7 +178,7 @@ Here is an example of the Dict layout:
 ### file.mkdir
 `file.mkdir(path: str) -> None`
 
-The <b>file.mkdir</b> method is very cool, and will be even cooler when Nick documents it.
+The <b>file.mkdir</b> method is make a new dirctory at `path`. If the parent directory does not exist or the directory cannot be otherwise be created, it will creat an error.
 
 ### file.moveto
 `file.moveto(src: str, dst: str) -> None`

implants/lib/eldritch/src/file/mkdir_impl.rs

@@ -1,5 +1,53 @@
 use anyhow::Result;
+use std::fs;
 
-pub fn mkdir(_path: String) -> Result<()> {
-    unimplemented!("Method unimplemented")
+pub fn mkdir(path: String) -> Result<()> {
+    match fs::create_dir(&path) {
+        Ok(_) => return Ok(()),
+        Err(_) => return Err(anyhow::anyhow!(format!("Failed to create directory at path: {}", path))),
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use std::fs;
+    use anyhow::Ok;
+    use tempfile::tempdir;
+    use std::path::Path;
+
+    #[test]
+    fn test_successful_mkdir() -> Result<()> {
+        let tmp_dir_parent = tempdir()?;
+        let path_dir = String::from(tmp_dir_parent.path().to_str().unwrap()).clone();
+        tmp_dir_parent.close()?;
+
+        let result = mkdir(path_dir.clone());
+        assert!(result.is_ok(), "Expected mkdir to succeed, but it failed: {:?}", result);
+
+        let binding = path_dir.clone();
+        let res = Path::new(&binding);
+        assert!(res.is_dir(), "Directory not created successfully.");
+
+        fs::remove_dir_all(path_dir.clone()).ok();
+
+        Ok(())
+    } 
+
+    #[test]
+    fn test_error_mkdir() -> Result<()>{
+        let tmp_dir_parent = tempdir()?;
+        let path_dir = String::from(tmp_dir_parent.path().to_str().unwrap()).clone();
+        tmp_dir_parent.close()?;
+
+        let result = mkdir(format!("{}/{}", path_dir, "dir".to_string()));
+
+        assert!(
+            result.is_err(),
+            "Expected mkdir to fail, but it succeeded: {:?}",
+            result
+        );
+
+        Ok(())
+    }
 }