Adding new example counting formulas and errors (#6)

base/examples/formulas_and_errors.rs

@@ -0,0 +1,46 @@
+use ironcalc_base::{model::Model, types::CellType};
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let mut model = Model::new_empty("formulas-and-errors", "en", "UTC")?;
+    // A1
+    model.set_user_input(0, 1, 1, "1".to_string());
+    // A2
+    model.set_user_input(0, 2, 1, "2".to_string());
+    // A3
+    model.set_user_input(0, 3, 1, "3".to_string());
+    // B1
+    model.set_user_input(0, 1, 2, "=SUM(A1:A3)".to_string());
+    // B2
+    model.set_user_input(0, 2, 2, "=B1/0".to_string());
+    // Evaluate
+    model.evaluate();
+
+    let cells = model.get_all_cells();
+
+    let mut cells_count = 0;
+    let mut formula_count = 0;
+    let mut error_count = 0;
+
+    for cell in cells {
+        if let Some(cell) = model
+            .workbook
+            .worksheet(cell.index)?
+            .cell(cell.row, cell.column)
+        {
+            if cell.get_type() == CellType::ErrorValue {
+                error_count += 1;
+            }
+            if cell.has_formula() {
+                formula_count += 1;
+            }
+
+            cells_count += 1;
+        }
+    }
+
+    assert_eq!(cells_count, 5);
+    assert_eq!(formula_count, 2);
+    assert_eq!(error_count, 1);
+
+    Ok(())
+}