UPDATE: Update README to include a minimal ROADMAD

base/src/test/test_get_cell_content.rs

@@ -0,0 +1,18 @@
+#![allow(clippy::unwrap_used)]
+
+use crate::test::util::new_empty_model;
+
+#[test]
+fn test_formulas() {
+    let mut model = new_empty_model();
+    model.set_user_input(0, 1, 1, "$100.348".to_string());
+    model.set_user_input(0, 1, 2, "=ISNUMBER(A1)".to_string());
+
+    model.evaluate();
+
+    assert_eq!(model.get_cell_content(0, 1, 1).unwrap(), "100.348");
+    assert_eq!(model.get_cell_content(0, 1, 2).unwrap(), "=ISNUMBER(A1)");
+    assert_eq!(model.get_cell_content(0, 5, 5).unwrap(), "");
+
+    assert!(model.get_cell_content(1, 1, 2).is_err());
+}