From c4ceeb8382efed33a57f0b8062306e0d44ac1a3f Mon Sep 17 00:00:00 2001
From: Jaco <jacogr@gmail.com>
Date: Mon, 20 Jun 2022 07:09:51 +0200
Subject: [PATCH] Additional float conversion tests (#1550)

---
 packages/util/src/float/toU8a.spec.ts |  1 +
 packages/util/src/u8a/toFloat.spec.ts | 13 +++++++++++++
 2 files changed, 14 insertions(+)

diff --git a/packages/util/src/float/toU8a.spec.ts b/packages/util/src/float/toU8a.spec.ts
index 28b2bbcef..a43cc4f58 100644
--- a/packages/util/src/float/toU8a.spec.ts
+++ b/packages/util/src/float/toU8a.spec.ts
@@ -54,6 +54,7 @@ describe('floatToU8a', (): void => {
           foo = 'bar';
         }
 
+        // https://www.h-schmidt.net/FloatConverter/IEEE754.html
         expect(
           u8aToHex(floatToU8a(new Test(123.456)))
         ).toEqual('0x79e9f642');
diff --git a/packages/util/src/u8a/toFloat.spec.ts b/packages/util/src/u8a/toFloat.spec.ts
index 9283c27eb..09ab741ac 100644
--- a/packages/util/src/u8a/toFloat.spec.ts
+++ b/packages/util/src/u8a/toFloat.spec.ts
@@ -41,6 +41,19 @@ describe('u8aToFloat', (): void => {
         u8aToFloat(hexToU8a('0x0000c07f'))
       ).toEqual(Number.NaN);
     });
+
+    // https://www.h-schmidt.net/FloatConverter/IEEE754.html
+    it('decodes a known number', (): void => {
+      expect(
+        u8aToFloat(hexToU8a('0x79e9f642')).toFixed(3)
+      ).toEqual('123.456');
+    });
+
+    it('decodes a known number (BE)', (): void => {
+      expect(
+        u8aToFloat(hexToU8a('0x42f6e979'), { isLe: false }).toFixed(3)
+      ).toEqual('123.456');
+    });
   });
 
   describe('64-bit', (): void => {