fix(init): handle already existing path (#815)

* fix(init):  handle already existing path

* chore: add tests

src/cmd/init.rs

@@ -86,9 +86,23 @@ pub fn create_new_project(name: &str) -> Result<()> {
         .replace("%SEARCH%", &format!("{}", search))
         .replace("%HIGHLIGHT%", &format!("{}", highlight));
 
-    create_dir(path)?;
-    create_file(&path.join("config.toml"), &config)?;
+    populate(&path, compile_sass, &config)?;
 
+    println!();
+    console::success(&format!("Done! Your site was created in {:?}", canonicalize(path).unwrap()));
+    println!();
+    console::info(
+        "Get started by moving into the directory and using the built-in server: `zola serve`",
+    );
+    println!("Visit https://www.getzola.org for the full documentation.");
+    Ok(())
+}
+
+fn populate(path: &Path, compile_sass: bool, config: &str) -> Result<()> {
+    if !path.exists() {
+        create_dir(path)?;
+    }
+    create_file(&path.join("config.toml"), &config)?;
     create_dir(path.join("content"))?;
     create_dir(path.join("templates"))?;
     create_dir(path.join("static"))?;
@@ -97,13 +111,6 @@ pub fn create_new_project(name: &str) -> Result<()> {
         create_dir(path.join("sass"))?;
     }
 
-    println!();
-    console::success(&format!("Done! Your site was created in {:?}", canonicalize(path).unwrap()));
-    println!();
-    console::info(
-        "Get started by moving into the directory and using the built-in server: `zola serve`",
-    );
-    println!("Visit https://www.getzola.org for the full documentation.");
     Ok(())
 }
 
@@ -162,4 +169,59 @@ mod tests {
         remove_dir(&dir).unwrap();
         assert_eq!(true, allowed);
     }
+
+    #[test]
+    fn populate_existing_directory() {
+        let mut dir = temp_dir();
+        dir.push("test_existing_dir");
+        if dir.exists() {
+            remove_dir_all(&dir).expect("Could not free test directory");
+        }
+        create_dir(&dir).expect("Could not create test directory");
+        populate(&dir, true, "").expect("Could not populate zola directories");
+
+        assert_eq!(true, dir.join("config.toml").exists());
+        assert_eq!(true, dir.join("content").exists());
+        assert_eq!(true, dir.join("templates").exists());
+        assert_eq!(true, dir.join("static").exists());
+        assert_eq!(true, dir.join("themes").exists());
+        assert_eq!(true, dir.join("sass").exists());
+
+        remove_dir_all(&dir).unwrap();
+    }
+
+    #[test]
+    fn populate_non_existing_directory() {
+        let mut dir = temp_dir();
+        dir.push("test_non_existing_dir");
+        if dir.exists() {
+            remove_dir_all(&dir).expect("Could not free test directory");
+        }
+        populate(&dir, true, "").expect("Could not populate zola directories");
+
+        assert_eq!(true, dir.exists());
+        assert_eq!(true, dir.join("config.toml").exists());
+        assert_eq!(true, dir.join("content").exists());
+        assert_eq!(true, dir.join("templates").exists());
+        assert_eq!(true, dir.join("static").exists());
+        assert_eq!(true, dir.join("themes").exists());
+        assert_eq!(true, dir.join("sass").exists());
+
+        remove_dir_all(&dir).unwrap();
+    }
+
+    #[test]
+    fn populate_without_sass() {
+        let mut dir = temp_dir();
+        dir.push("test_wihout_sass_dir");
+        if dir.exists() {
+            remove_dir_all(&dir).expect("Could not free test directory");
+        }
+        create_dir(&dir).expect("Could not create test directory");
+        populate(&dir, false, "").expect("Could not populate zola directories");
+
+        assert_eq!(false, dir.join("sass").exists());
+
+        remove_dir_all(&dir).unwrap();
+    }
 }