UPDATE: Dump of initial files

base/src/test/test_number_format.rs

@@ -0,0 +1,16 @@
+#![allow(clippy::unwrap_used)]
+
+use crate::number_format::format_number;
+
+#[test]
+fn test_simple_format() {
+    let formatted = format_number(2.3, "General", "en");
+    assert_eq!(formatted.text, "2.3".to_string());
+}
+
+#[test]
+#[ignore = "not yet implemented"]
+fn test_wrong_locale() {
+    let formatted = format_number(2.3, "General", "ens");
+    assert_eq!(formatted.text, "#ERROR!".to_string());
+}