UPDATE: Adds Web browser wasm bindings (#30)

* UPDATE: Adds Web browser wasm bindings

* FIX: install wasm-pack in the GitHub actions

base/src/test/user_model/test_to_from_bytes.rs

@@ -0,0 +1,30 @@
+#![allow(clippy::unwrap_used)]
+
+use crate::{test::util::new_empty_model, UserModel};
+
+#[test]
+fn basic() {
+    let mut model1 = UserModel::from_model(new_empty_model());
+    let width = model1.get_column_width(0, 3).unwrap() * 3.0;
+    model1.set_column_width(0, 3, width).unwrap();
+    model1.set_user_input(0, 1, 2, "Hello IronCalc!").unwrap();
+
+    let model_bytes = model1.to_bytes();
+
+    let model2 = UserModel::from_bytes(&model_bytes).unwrap();
+
+    assert_eq!(model2.get_column_width(0, 3), Ok(width));
+    assert_eq!(
+        model2.get_formatted_cell_value(0, 1, 2),
+        Ok("Hello IronCalc!".to_string())
+    );
+}
+
+#[test]
+fn errors() {
+    let model_bytes = "Early in the morning, late in the century, Cricklewood Broadway.";
+    assert_eq!(
+        &UserModel::from_bytes(model_bytes).unwrap_err(),
+        "Error parsing workbook"
+    );
+}