variable module

src/variable.rs

@@ -0,0 +1,37 @@
+#[derive(Debug, Eq, PartialEq)]
+pub struct Variable {
+    pub(crate) id: String,
+    pub(crate) initial_value: String,
+}
+
+impl From<String> for Variable {
+    fn from(string: String) -> Variable {
+        let id_value: Vec<&str> = string.split('\n').collect();
+        let id = id_value[0].replace("VAR ", "").to_string();
+        let initial_value = id_value[1].to_string();
+
+        Variable { id, initial_value }
+    }
+}
+
+impl ToString for Variable {
+    #[inline]
+    fn to_string(&self) -> String {
+        format!("VAR {}\n{}", self.id, self.initial_value)
+    }
+}
+
+#[test]
+fn test_variable_from_string() {
+    assert_eq!(
+        Variable::from("VAR a\n42".to_string()),
+        Variable { id: "a".to_string(), initial_value: "42".to_string()}
+    );
+}
+
+#[test]
+fn test_variable_to_string() {
+    let output = Variable { id: "c".to_string(), initial_value: "57".to_string() }.to_string();
+    let expected = "VAR c\n57".to_string();
+    assert_eq!(output, expected);
+}