From cfc868bf4dc371b299801dd24917a695387546e2 Mon Sep 17 00:00:00 2001
From: Jacob Evans <jacob@dekz.net>
Date: Thu, 18 Jan 2018 18:17:22 +1100
Subject: Reject negative amounts in isValidBaseUnitAmount

---
 packages/assert/src/index.ts | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'packages/assert/src')

diff --git a/packages/assert/src/index.ts b/packages/assert/src/index.ts
index 56f663780..015ffe579 100644
--- a/packages/assert/src/index.ts
+++ b/packages/assert/src/index.ts
@@ -12,6 +12,8 @@ export const assert = {
     },
     isValidBaseUnitAmount(variableName: string, value: BigNumber) {
         assert.isBigNumber(variableName, value);
+        const isNegative = value.lessThan(0);
+        this.assert(!isNegative, `${variableName} should not be a negative number, found value: ${value.toNumber()}` );
         const hasDecimals = value.decimalPlaces() !== 0;
         this.assert(
             !hasDecimals,
-- 
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