UPDATE: Dump of initial files

base/src/test/test_fn_count.rs

@@ -0,0 +1,37 @@
+#![allow(clippy::unwrap_used)]
+
+use crate::test::util::new_empty_model;
+
+#[test]
+fn test_fn_count_arguments() {
+    let mut model = new_empty_model();
+    model._set("A1", "=COUNT()");
+    model._set("A2", "=COUNTA()");
+    model._set("A3", "=COUNTBLANK()");
+    model._set("A4", "=COUNTBLANK(C1:D1, H3:H4)");
+    model.evaluate();
+
+    assert_eq!(model._get_text("A1"), *"#ERROR!");
+    assert_eq!(model._get_text("A2"), *"#ERROR!");
+    assert_eq!(model._get_text("A3"), *"#ERROR!");
+    assert_eq!(model._get_text("A4"), *"#ERROR!");
+}
+
+#[test]
+fn test_fn_count_minimal() {
+    let mut model = new_empty_model();
+    model._set("B1", "3.1415926");
+    model._set("B2", "Tomorrow's the day my bride's gonna come");
+    model._set("B3", "");
+    model._set("A1", "=COUNT(B1:B5)");
+    model._set("A2", "=COUNTA(B1:B5)");
+    model._set("A3", "=COUNTBLANK(B1:B5)");
+    model.evaluate();
+
+    // There is only one number
+    assert_eq!(model._get_text("A1"), *"1");
+    // Thre are three non-empty cells
+    assert_eq!(model._get_text("A2"), *"3");
+    // There are 3 blank cells B4, B5 and B3 that contains the empty string
+    assert_eq!(model._get_text("A3"), *"3");
+}