UPDATE: Update README to include a minimal ROADMAD

base/src/test/mod.rs

@@ -47,5 +47,6 @@ mod test_number_format;
 
 mod test_escape_quotes;
 mod test_fn_type;
+mod test_get_cell_content;
 mod test_percentage;
 mod test_today;

base/src/test/test_frozen_rows_and_columns.rs

@@ -0,0 +1,71 @@
+#![allow(clippy::unwrap_used)]
+
+use crate::expressions::utils::{LAST_COLUMN, LAST_ROW};
+use crate::test::util::new_empty_model;
+
+#[test]
+fn test_empty_model() {
+    let mut model = new_empty_model();
+    assert_eq!(model.get_frozen_rows(0), Ok(0));
+    assert_eq!(model.get_frozen_columns(0), Ok(0));
+
+    let e = model.set_frozen_rows(0, 3);
+    assert!(e.is_ok());
+    assert_eq!(model.get_frozen_rows(0), Ok(3));
+    assert_eq!(model.get_frozen_columns(0), Ok(0));
+
+    let e = model.set_frozen_columns(0, 53);
+    assert!(e.is_ok());
+    assert_eq!(model.get_frozen_rows(0), Ok(3));
+    assert_eq!(model.get_frozen_columns(0), Ok(53));
+
+    // Set them back to zero
+    let e = model.set_frozen_rows(0, 0);
+    assert!(e.is_ok());
+    let e = model.set_frozen_columns(0, 0);
+    assert!(e.is_ok());
+    assert_eq!(model.get_frozen_rows(0), Ok(0));
+    assert_eq!(model.get_frozen_columns(0), Ok(0));
+}
+
+#[test]
+fn test_invalid_sheet() {
+    let mut model = new_empty_model();
+    assert_eq!(model.get_frozen_rows(1), Err("Invalid sheet".to_string()));
+    assert_eq!(
+        model.get_frozen_columns(3),
+        Err("Invalid sheet".to_string())
+    );
+
+    assert_eq!(
+        model.set_frozen_rows(3, 3),
+        Err("Invalid sheet".to_string())
+    );
+    assert_eq!(
+        model.set_frozen_columns(3, 5),
+        Err("Invalid sheet".to_string())
+    );
+}
+
+#[test]
+fn test_invalid_rows_columns() {
+    let mut model = new_empty_model();
+
+    assert_eq!(
+        model.set_frozen_rows(0, -3),
+        Err("Frozen rows cannot be negative".to_string())
+    );
+    assert_eq!(
+        model.set_frozen_columns(0, -5),
+        Err("Frozen columns cannot be negative".to_string())
+    );
+
+    assert_eq!(
+        model.set_frozen_rows(0, LAST_ROW),
+        Err("Too many rows".to_string())
+    );
+    assert_eq!(
+        model.set_frozen_columns(0, LAST_COLUMN),
+        Err("Too many columns".to_string())
+    );
+}

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());
+}