feat: Add ability to use an alternate directory truncation style (#239)

* Add ability to use an alternate directory truncation style

tests/testsuite/directory.rs

@@ -61,6 +61,28 @@ fn truncated_directory_in_home() -> io::Result<()> {
     Ok(())
 }
 
+#[test]
+#[ignore]
+fn fish_directory_in_home() -> io::Result<()> {
+    let dir = home_dir().unwrap().join("starship/engine/schematics");
+    fs::create_dir_all(&dir)?;
+
+    let output = common::render_module("directory")
+        .use_config(toml::toml! {
+            [directory]
+            truncation_length = 1
+            fish_style_pwd_dir_length = 2
+        })
+        .arg("--path")
+        .arg(dir)
+        .output()?;
+    let actual = String::from_utf8(output.stdout).unwrap();
+
+    let expected = format!("in {} ", Color::Cyan.bold().paint("~/st/en/schematics"));
+    assert_eq!(expected, actual);
+    Ok(())
+}
+
 #[test]
 fn root_directory() -> io::Result<()> {
     let output = common::render_module("directory")
@@ -141,6 +163,31 @@ fn truncated_directory_config_large() -> io::Result<()> {
     Ok(())
 }
 
+#[test]
+#[ignore]
+fn fish_style_directory_config_large() -> io::Result<()> {
+    let dir = Path::new("/tmp/starship/thrusters/rocket");
+    fs::create_dir_all(&dir)?;
+
+    let output = common::render_module("directory")
+        .use_config(toml::toml! {
+            [directory]
+            truncation_length = 1
+            fish_style_pwd_dir_length = 100
+        })
+        .arg("--path")
+        .arg(dir)
+        .output()?;
+    let actual = String::from_utf8(output.stdout).unwrap();
+
+    let expected = format!(
+        "in {} ",
+        Color::Cyan.bold().paint("/tmp/starship/thrusters/rocket")
+    );
+    assert_eq!(expected, actual);
+    Ok(())
+}
+
 #[test]
 #[ignore]
 fn truncated_directory_config_small() -> io::Result<()> {
@@ -162,6 +209,28 @@ fn truncated_directory_config_small() -> io::Result<()> {
     Ok(())
 }
 
+#[test]
+#[ignore]
+fn fish_directory_config_small() -> io::Result<()> {
+    let dir = Path::new("/tmp/starship/thrusters/rocket");
+    fs::create_dir_all(&dir)?;
+
+    let output = common::render_module("directory")
+        .use_config(toml::toml! {
+            [directory]
+            truncation_length = 2
+            fish_style_pwd_dir_length = 1
+        })
+        .arg("--path")
+        .arg(dir)
+        .output()?;
+    let actual = String::from_utf8(output.stdout).unwrap();
+
+    let expected = format!("in {} ", Color::Cyan.bold().paint("/t/s/thrusters/rocket"));
+    assert_eq!(expected, actual);
+    Ok(())
+}
+
 #[test]
 #[ignore]
 fn git_repo_root() -> io::Result<()> {
@@ -255,6 +324,70 @@ fn directory_in_git_repo_truncate_to_repo_false() -> io::Result<()> {
     Ok(())
 }
 
+#[test]
+#[ignore]
+fn fish_path_directory_in_git_repo_truncate_to_repo_false() -> io::Result<()> {
+    let tmp_dir = TempDir::new_in(dirs::home_dir().unwrap())?;
+    let repo_dir = tmp_dir.path().join("above-repo").join("rocket-controls");
+    let dir = repo_dir.join("src/meters/fuel-gauge");
+    fs::create_dir_all(&dir)?;
+    Repository::init(&repo_dir).unwrap();
+
+    let output = common::render_module("directory")
+        .use_config(toml::toml! {
+            [directory]
+            // Don't truncate the path at all.
+            truncation_length = 5
+            truncate_to_repo = false
+            fish_style_pwd_dir_length = 1
+        })
+        .arg("--path")
+        .arg(dir)
+        .output()?;
+    let actual = String::from_utf8(output.stdout).unwrap();
+
+    let expected = format!(
+        "in {} ",
+        Color::Cyan
+            .bold()
+            .paint("~/.t/above-repo/rocket-controls/src/meters/fuel-gauge")
+    );
+    assert_eq!(expected, actual);
+    Ok(())
+}
+
+#[test]
+#[ignore]
+fn fish_path_directory_in_git_repo_truncate_to_repo_true() -> io::Result<()> {
+    let tmp_dir = TempDir::new_in(dirs::home_dir().unwrap())?;
+    let repo_dir = tmp_dir.path().join("above-repo").join("rocket-controls");
+    let dir = repo_dir.join("src/meters/fuel-gauge");
+    fs::create_dir_all(&dir)?;
+    Repository::init(&repo_dir).unwrap();
+
+    let output = common::render_module("directory")
+        .use_config(toml::toml! {
+            [directory]
+            // `truncate_to_repo = true` should display the truncated path
+            truncation_length = 5
+            truncate_to_repo = true
+            fish_style_pwd_dir_length = 1
+        })
+        .arg("--path")
+        .arg(dir)
+        .output()?;
+    let actual = String::from_utf8(output.stdout).unwrap();
+
+    let expected = format!(
+        "in {} ",
+        Color::Cyan
+            .bold()
+            .paint("~/.t/a/rocket-controls/src/meters/fuel-gauge")
+    );
+    assert_eq!(expected, actual);
+    Ok(())
+}
+
 #[test]
 #[ignore]
 fn directory_in_git_repo_truncate_to_repo_true() -> io::Result<()> {