FIX: NOW shows now formatted output

base/src/test/test_now.rs

@@ -0,0 +1,30 @@
+#![allow(clippy::unwrap_used)]
+
+use crate::{mock_time, test::util::new_empty_model};
+
+// 14:44 20 Mar 2023 Berlin
+const TIMESTAMP_2023: i64 = 1679319865208;
+
+#[test]
+fn arguments() {
+    let mut model = new_empty_model();
+
+    model._set("A1", "=NOW(1)");
+    model.evaluate();
+
+    assert_eq!(
+        model._get_text("A1"),
+        "#ERROR!",
+        "NOW should not accept arguments"
+    );
+}
+
+#[test]
+fn returns_date_time() {
+    mock_time::set_mock_time(TIMESTAMP_2023);
+    let mut model = new_empty_model();
+    model._set("A1", "=NOW()");
+    model.evaluate();
+    let text = model._get_text("A1");
+    assert_eq!(text, *"20/03/2023 13:44:25");
+}