FIX: Adds tests

base/src/test/test_workbook.rs

@@ -0,0 +1,18 @@
+#![allow(clippy::unwrap_used)]
+
+use crate::{test::util::new_empty_model, types::SheetInfo};
+
+#[test]
+fn workbook_worksheets_info() {
+    let model = new_empty_model();
+    let sheets_info = model.workbook.get_worksheets_info();
+    assert_eq!(
+        sheets_info[0],
+        SheetInfo {
+            name: "Sheet1".to_string(),
+            state: "visible".to_string(),
+            sheet_id: 1,
+            color: None
+        }
+    );
+}