Setup initial layout of codebase. Began work on cd utility for shell.…

… Created tests for cd.

.gitignore

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+target

Cargo.toml

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+[package]
+name = "rusty"
+version = "0.1.0"
+authors = ["Michael Gattozzi <mgattozzi@gmail.com>"]

src/lib.rs

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+pub mod utils;

src/main.rs

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+
+extern crate rusty;
+
+use rusty::utils::cd;
+use std::path::Path;
+
+fn main() {
+    println!("Hello, world!");
+    cd::change_directory(Path::new(".."));
+}

src/utils/cd.rs

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+use std::path::Path;
+use std::env;
+
+pub fn change_directory(directory: &Path){
+    let mut dir = directory;
+    if dir.is_relative(){
+        println!("dir is relative");
+    } else {
+        println!("dir is absolute");
+    }
+
+    env::set_current_dir(dir).unwrap();
+}
+
+
+
+#[cfg(test)]
+mod tests {
+    use std::path::Path;
+    use std::env;
+    use super::*;
+
+    #[test]
+    #[should_panic]
+    fn test_change_directory_ok(){
+        let mut dir = Path::new("/tmp").to_str();
+        change_directory(Path::new("/"));
+        let new_dir = env::current_dir().unwrap();
+        let new_dir = new_dir.to_str();
+        assert_eq!(dir, new_dir); 
+    }
+
+    #[test]
+    fn test_change_directory_fail(){
+        let mut dir = Path::new("/").to_str();
+        change_directory(Path::new("/"));
+        let new_dir = env::current_dir().unwrap();
+        let new_dir = new_dir.to_str();
+        assert_eq!(dir, new_dir); 
+    }
+
+}
+

src/utils/mod.rs

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+pub mod cd;