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-rw-r--r--packages/0x.js/src/0x.ts2
-rw-r--r--packages/0x.js/test/0x.js_test.ts6
2 files changed, 7 insertions, 1 deletions
diff --git a/packages/0x.js/src/0x.ts b/packages/0x.js/src/0x.ts
index 7393cc814..596d6ffba 100644
--- a/packages/0x.js/src/0x.ts
+++ b/packages/0x.js/src/0x.ts
@@ -128,7 +128,7 @@ export class ZeroEx {
* @return The amount in units.
*/
public static toUnitAmount(amount: BigNumber, decimals: number): BigNumber {
- assert.isBigNumber('amount', amount);
+ assert.isValidBaseUnitAmount('amount', amount);
assert.isNumber('decimals', decimals);
const aUnit = new BigNumber(10).pow(decimals);
diff --git a/packages/0x.js/test/0x.js_test.ts b/packages/0x.js/test/0x.js_test.ts
index 8d62b3518..9bf504909 100644
--- a/packages/0x.js/test/0x.js_test.ts
+++ b/packages/0x.js/test/0x.js_test.ts
@@ -114,6 +114,12 @@ describe('ZeroEx library', () => {
});
});
describe('#toUnitAmount', () => {
+ it('should throw if invalid baseUnit amount supplied as argument', () => {
+ const invalidBaseUnitAmount = new BigNumber(1000000000.4);
+ const decimals = 6;
+ expect(() => ZeroEx.toUnitAmount(invalidBaseUnitAmount, decimals))
+ .to.throw('amount should be in baseUnits (no decimals), found value: 1000000000.4');
+ });
it('Should return the expected unit amount for the decimals passed in', () => {
const baseUnitAmount = new BigNumber(1000000000);
const decimals = 6;