diff --git a/Conversions/HexToDecimal.js b/Conversions/HexToDecimal.js
index 31ae13932f..e402421399 100644
--- a/Conversions/HexToDecimal.js
+++ b/Conversions/HexToDecimal.js
@@ -1,4 +1,7 @@
function hexToInt(hexNum) {
+ if (!/^[0-9A-F]+$/.test(hexNum)) {
+ throw new Error('Invalid hex string.')
+ }
const numArr = hexNum.split('') // converts number to array
return numArr.map((item, index) => {
switch (item) {
@@ -29,4 +32,4 @@ function hexToDecimal(hexNum) {
}, 0)
}
-export { hexToInt, hexToDecimal }
+export { hexToDecimal }
diff --git a/Conversions/test/HexToDecimal.test.js b/Conversions/test/HexToDecimal.test.js
new file mode 100644
index 0000000000..816c70511d
--- /dev/null
+++ b/Conversions/test/HexToDecimal.test.js
@@ -0,0 +1,24 @@
+import { hexToDecimal } from '../HexToDecimal'
+
+describe('Testing HexToDecimal', () => {
+ it.each([
+ ['0', 0],
+ ['1', 1],
+ ['A', 10],
+ ['B', 11],
+ ['C', 12],
+ ['D', 13],
+ ['E', 14],
+ ['F', 15],
+ ['10', 16],
+ ['859', 2137],
+ ['4D2', 1234],
+ ['81323ABD92', 554893491602]
+ ])('check with %s', (hexStr, expected) => {
+ expect(hexToDecimal(hexStr)).toBe(expected)
+ })
+
+ it.each(['a', '-1', 'G', ''])('throws for %s', (hexStr) => {
+ expect(() => hexToDecimal(hexStr)).toThrowError()
+ })
+})
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