Refactor RepoConfig and add test

libgitcash/src/config.rs

@@ -4,7 +4,7 @@ use serde::{Deserialize, Serialize};
 
 use crate::error::Error;
 
-#[derive(Debug, Deserialize, Serialize)]
+#[derive(Debug, Deserialize, Serialize, PartialEq)]
 pub struct RepoConfig {
     pub name: String,
     pub currency: Currency,
@@ -15,14 +15,43 @@ impl RepoConfig {
     pub fn load(repo_path: &Path) -> Result<Self, Error> {
         let config_string = std::fs::read_to_string(repo_path.join("gitcash.toml"))
             .map_err(|e| Error::RepoError(format!("Could not read gitcash.toml: {}", e)))?;
+        Self::from_str(&config_string)
+    }
+
+    pub fn from_str(config_string: &str) -> Result<Self, Error> {
         let config: RepoConfig = toml::from_str(&config_string)
             .map_err(|e| Error::RepoError(format!("Could not parse gitcash.toml: {}", e)))?;
         Ok(config)
     }
 }
 
-#[derive(Debug, Deserialize, Serialize)]
+#[derive(Debug, Deserialize, Serialize, PartialEq)]
 pub struct Currency {
     pub code: String,
     pub divisor: usize,
 }
+
+#[cfg(test)]
+mod tests {
+    use crate::{Currency, RepoConfig};
+
+    #[test]
+    fn test_from_str() {
+        let repo_config_str = r#"name = "foo"
+               [currency]
+               code = "CHF"
+               divisor = 100"#;
+        println!("{}", repo_config_str);
+        let repo_config = RepoConfig::from_str(repo_config_str).unwrap();
+        assert_eq!(
+            RepoConfig {
+                name: "foo".to_owned(),
+                currency: Currency {
+                    code: "CHF".to_owned(),
+                    divisor: 100
+                }
+            },
+            repo_config
+        );
+    }
+}