From: Chris Duncan <chris@zoso.dev>
Date: Tue, 8 Oct 2024 16:40:03 +0000 (-0700)
Subject: Add test for converting small amounts of raw to fractional nano. Fix issue found... 
X-Git-Tag: v0.0.6~1
X-Git-Url: https://zoso.dev/?a=commitdiff_plain;h=4ae6d4caa94f9734af6cd1d17f0ae6613a01cf39;p=libnemo.git

Add test for converting small amounts of raw to fractional nano. Fix issue found with said test.
---

diff --git a/src/lib/tools.ts b/src/lib/tools.ts
index fb5c13d..22b0176 100644
--- a/src/lib/tools.ts
+++ b/src/lib/tools.ts
@@ -53,7 +53,7 @@ export async function convert (amount: bigint | string, inputUnit: string, outpu
 
 	// convert to desired denomination
 	if (UNITS[outputUnit] !== 0) {
-		f = i.slice(-UNITS[outputUnit]) + f
+		f = i.padStart(40, '0').slice(-UNITS[outputUnit]) + f
 		i = i.slice(0, -UNITS[outputUnit])
 	}
 	i = i.replace(/^0*/g, '') ?? '0'
diff --git a/test/tools.test.mjs b/test/tools.test.mjs
index d2c1b6f..08de50d 100644
--- a/test/tools.test.mjs
+++ b/test/tools.test.mjs
@@ -23,6 +23,11 @@ describe('unit conversion tests', async () => {
 		assert.equal(result, '1')
 	})
 
+	it('should convert 1 raw to 10^-29 nano', async () => {
+		const result = await Tools.convert('1', 'RAW', 'NANO')
+		assert.equal(result, '.000000000000000000000000000001')
+	})
+
 	it('should ignore leading and trailing zeros', async () => {
 		const result = await Tools.convert('0011002200.0033004400', 'nano', 'nano')
 		assert.equal(result, '11002200.00330044')