From 3246137545defb294824f22f9cb284fd221d5457 Mon Sep 17 00:00:00 2001
From: Elsa Minsut <elsaminsut@gmail.com>
Date: Wed, 12 Nov 2025 01:25:13 +0100
Subject: [PATCH] update: adds unit test for COMBIN and COMBINA

---
 base/src/test/test_combin_combina | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 base/src/test/test_combin_combina

diff --git a/base/src/test/test_combin_combina b/base/src/test/test_combin_combina
new file mode 100644
index 0000000..3876299
--- /dev/null
+++ b/base/src/test/test_combin_combina
@@ -0,0 +1,27 @@
+#![allow(clippy::unwrap_used)]
+
+use crate::test::util::new_empty_model;
+
+#[test]
+fn arguments() {
+    let mut model = new_empty_model();
+    model._set("A1", "=COMBIN(5,2)");
+    model._set("A2", "=COMBINA(5,2)");
+    model._set("A3", "=COMBIN()");
+    model._set("A4", "=COMBINA()");
+    model._set("A5", "=COMBIN(2)");
+    model._set("A6", "=COMBINA(2)");
+    model._set("A5", "=COMBIN(1, 2, 3)");
+    model._set("A6", "=COMBINA(1, 2, 3)");
+
+    model.evaluate();
+
+    assert_eq!(model._get_text("A1"), *"10");
+    assert_eq!(model._get_text("A2"), *"15");
+    assert_eq!(model._get_text("A3"), *"#ERROR!");
+    assert_eq!(model._get_text("A4"), *"#ERROR!");
+    assert_eq!(model._get_text("A5"), *"#ERROR!");
+    assert_eq!(model._get_text("A6"), *"#ERROR!");
+    assert_eq!(model._get_text("A7"), *"#ERROR!");
+    assert_eq!(model._get_text("A8"), *"#ERROR!");
+}
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