UPDATE: Adds LOG10 and LN for Elsa

base/src/test/test_log.rs

@@ -0,0 +1,19 @@
+#![allow(clippy::unwrap_used)]
+
+use crate::test::util::new_empty_model;
+
+#[test]
+fn arguments() {
+    let mut model = new_empty_model();
+    model._set("A1", "=LOG(100)");
+    model._set("A2", "=LOG()");
+    model._set("A3", "=LOG(10000, 10)");
+    model._set("A4", "=LOG(100, 10, 1)");
+
+    model.evaluate();
+
+    assert_eq!(model._get_text("A1"), *"2");
+    assert_eq!(model._get_text("A2"), *"#ERROR!");
+    assert_eq!(model._get_text("A3"), *"4");
+    assert_eq!(model._get_text("A4"), *"#ERROR!");
+}