add changelog and update tests

Author: Alex Luu

packages/web3-utils/CHANGELOG.md

@@ -224,4 +224,5 @@ Documentation:
 
 ### Fixed
 
-- `toWei` support numbers in scientific notation (#6908)
+- `toWei` support numbers in scientific notation (#6908)
+- `toWei` and `fromWei` trims according to ether unit successfuly (#7044)

packages/web3-utils/test/fixtures/converters.ts

@@ -292,12 +292,17 @@ const conversionBaseData: [[Numbers, EtherUnits], string][] = [
 	[['879123456788877661', 'tether'], '0.000000000000879123456788877661'],
 ];
 
-export const fromWeiValidData: [[Numbers, EtherUnits], string][] = [
+export const fromWeiValidData: [[Numbers, EtherUnits], Numbers][] = [
 	...conversionBaseData,
     [['0xff', 'wei'], '255'],
     [[1e+22, 'ether'], '10000'],
     [[19999999999999991611392, 'ether'], '19999.999999999991611392'],
     [[1.9999999999999991611392e+22, 'ether'], '19999.999999999991611392'],
+	[['1000000', 'ether'], 0.000000000001],
+	[['1123456789123456789', 'ether'], '1.123456789123456789'],
+	[['1123', 'kwei'], '1.123'],
+	[['1234100' ,'kwei'], '1234.1'],
+	[['3308685546611893', 'ether'], '0.003308685546611893']
 ];
 
 export const toWeiValidData: [[Numbers, EtherUnits], Numbers][] = [
@@ -309,7 +314,8 @@ export const toWeiValidData: [[Numbers, EtherUnits], Numbers][] = [
 	[['1123456789123456789', 'ether'], '1.123456789123456789123'],
 	[['1123', 'kwei'], '1.12345'],
 	[['1234100' ,'kwei'], '1234.1'],
-	[['3308685546611893', 'ether'], '0.0033086855466118933']
+	[['3308685546611893', 'ether'], '0.0033086855466118933'],
+	[['1123', 'kwei'], 1.12345],
 
 ];