UPDATE: Dump of initial files

base/src/test/test_fn_average.rs

@@ -0,0 +1,31 @@
+#![allow(clippy::unwrap_used)]
+
+use crate::test::util::new_empty_model;
+
+#[test]
+fn test_fn_average_arguments() {
+    let mut model = new_empty_model();
+    model._set("A1", "=AVERAGE()");
+    model._set("A2", "=AVERAGEA()");
+    model.evaluate();
+
+    assert_eq!(model._get_text("A1"), *"#ERROR!");
+    assert_eq!(model._get_text("A2"), *"#ERROR!");
+}
+
+#[test]
+fn test_fn_average_minimal() {
+    let mut model = new_empty_model();
+    model._set("B1", "1");
+    model._set("B2", "2");
+    model._set("B3", "3");
+    model._set("B4", "'2");
+    // B5 is empty
+    model._set("B6", "true");
+    model._set("A1", "=AVERAGE(B1:B6)");
+    model._set("A2", "=AVERAGEA(B1:B6)");
+    model.evaluate();
+
+    assert_eq!(model._get_text("A1"), *"2");
+    assert_eq!(model._get_text("A2"), *"1.4");
+}