From bd1a2b2514ce566ce0d07a18494f24faa4259c1c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Thorbj=C3=B8rn=20Lindeijer?= <bjorn@lindeijer.nl>
Date: Fri, 15 Sep 2023 16:52:59 +0200
Subject: [PATCH] Fixed potential division by zero in FIFO

Happened because somewhere in my data there was a 0 fee set, which should
not cause any issues.
---
 src/fifo.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/fifo.rs b/src/fifo.rs
index c760951..827e605 100644
--- a/src/fifo.rs
+++ b/src/fifo.rs
@@ -32,6 +32,10 @@ fn gains<'a>(holdings: &mut HashMap<&'a str, VecDeque<Entry>>, timestamp: NaiveD
 
     let mut capital_gains: Vec<CapitalGain> = Vec::new();
     let mut sold_quantity = outgoing.quantity;
+    if sold_quantity.is_zero() {
+        return Ok(capital_gains);
+    }
+
     let sold_unit_price = incoming_fiat / sold_quantity;
 
     while let Some(holding) = currency_holdings.front_mut() {