Add integration tests (#6)

### Changed
- Added current_dir param to segments to make them more testable
- Moved all existing integration tests to a `tests/` dir

### Added
- A whole bunch of new integration tests

1 files changed, 4 insertions, 48 deletions

diff --git a/src/modules/directory.rs b/src/modules/directory.rs
index 2b5e52722..8048a3620 100644
--- a/src/modules/directory.rs
+++ b/src/modules/directory.rs
@@ -3,7 +3,6 @@ use ansi_term::Color;
 use clap::ArgMatches;
 use dirs;
 use git2::Repository;
-use std::env;
 use std::path::Path;
 
 /// Creates a segment with the current directory
@@ -15,28 +14,25 @@ use std::path::Path;
 ///
 /// **Truncation**
 /// Paths will be limited in length to `3` path components by default.
-pub fn segment(_: &ArgMatches) -> Option<Segment> {
+pub fn segment(current_dir: &Path, _args: &ArgMatches) -> Option<Segment> {
     const HOME_SYMBOL: &str = "~";
     const DIR_TRUNCATION_LENGTH: usize = 3;
     const SECTION_COLOR: Color = Color::Cyan;
 
     let mut segment = Segment::new("dir");
 
-    // TODO: Currently gets the physical directory. Get the logical directory.
-    let current_path = env::current_dir().expect("Unable to identify current directory");
-
     let dir_string;
-    if let Ok(repo) = git2::Repository::discover(&current_path) {
+    if let Ok(repo) = git2::Repository::discover(current_dir) {
         // Contract the path to the git repo root
         let repo_root = get_repo_root(&repo);
         let repo_folder_name = repo_root.file_name().unwrap().to_str().unwrap();
 
-        dir_string = contract_path(&current_path, repo_root, repo_folder_name);
+        dir_string = contract_path(current_dir, repo_root, repo_folder_name);
     } else {
         // Contract the path to the home directory
         let home_dir = dirs::home_dir().unwrap();
 
-        dir_string = contract_path(&current_path, &home_dir, HOME_SYMBOL);
+        dir_string = contract_path(current_dir, &home_dir, HOME_SYMBOL);
     }
 
     // Truncate the dir string to the maximum number of path components
@@ -107,48 +103,8 @@ fn truncate(dir_string: String, length: usize) -> String {
 
 #[cfg(test)]
 mod tests {
-    // TODO: Look into stubbing `env` so that tests can be run in parallel
     use super::*;
 
-    // #[test]
-    // fn truncate_home_dir() {
-    //     let args = App::new("starship")
-    //         .arg(Arg::with_name("status_code"))
-    //         .get_matches_from(vec!["starship", "0"]);
-
-    //     let home_dir = dirs::home_dir().unwrap();
-    //     env::set_current_dir(&home_dir).unwrap();
-
-    //     let segment = segment(&args).unwrap();
-    //     assert_eq!(segment.output(), "~");
-    // }
-
-    // #[test]
-    // fn dont_truncate_non_home_dir() {
-    //     let args = App::new("starship")
-    //         .arg(Arg::with_name("status_code"))
-    //         .get_matches_from(vec!["starship", "0"]);
-
-    //     let root_dir = Path::new("/");
-    //     env::set_current_dir(&root_dir).unwrap();
-
-    //     let segment = segment(&args).unwrap();
-    //     assert_eq!(segment.output(), "/");
-    // }
-
-    // #[test]
-    // fn do_not_canonicalize_paths() {
-    //     let args = App::new("starship")
-    //         .arg(Arg::with_name("status_code"))
-    //         .get_matches_from(vec!["starship", "0"]);
-
-    //     let root_dir = Path::new("/var");
-    //     env::set_current_dir(&root_dir).unwrap();
-
-    //     let segment = segment(&args).unwrap();
-    //     assert_eq!(segment.output(), "/var");
-    // }
-
     #[test]
     fn contract_home_directory() {
         let full_path = Path::new("/Users/astronaut/schematics/rocket");