From 669496f0ba4924b19c911220b9290aa45db9f89c Mon Sep 17 00:00:00 2001
From: Florian Klink <flokli@flokli.de>
Date: Wed, 25 Jan 2023 12:16:55 +0100
Subject: test(tvix/eval): add test for total_fmt_float

Change-Id: If6c478ee3d2e4ecf5ef92289614f86535ad05cb7
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7927
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
Autosubmit: flokli <flokli@flokli.de>
---
 tvix/eval/src/value/mod.rs | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/tvix/eval/src/value/mod.rs b/tvix/eval/src/value/mod.rs
index 12b3592e1625..0f515109f5c7 100644
--- a/tvix/eval/src/value/mod.rs
+++ b/tvix/eval/src/value/mod.rs
@@ -656,6 +656,34 @@ mod tests {
     use super::*;
     use imbl::vector;
 
+    mod floats {
+        use crate::value::total_fmt_float;
+
+        #[test]
+        fn format_float() {
+            let ff = vec![
+                (0f64, "0"),
+                (1.0f64, "1"),
+                (-0.01, "-0.01"),
+                (5e+22, "5e+22"),
+                (1e6, "1e+06"),
+                (-2E-2, "-0.02"),
+                (6.626e-34, "6.626e-34"),
+                (9_224_617.445_991_228_313, "9.22462e+06"),
+            ];
+            for (n, expected) in ff.iter() {
+                let mut buf = String::new();
+                let res = total_fmt_float(*n, &mut buf);
+                assert!(res.is_ok());
+                assert_eq!(
+                    expected, &buf,
+                    "{} should be formatted as {}, but got {}",
+                    n, expected, &buf
+                );
+            }
+        }
+    }
+
     mod nix_eq {
         use crate::observer::NoOpObserver;
 
-- 
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