1 files changed, 41 insertions, 0 deletions
diff --git a/test/unit/app/util-test.js b/test/unit/app/util-test.js
new file mode 100644
index 000000000..670bc4d22
--- /dev/null
+++ b/test/unit/app/util-test.js
@@ -0,0 +1,41 @@
+const assert = require('assert')
+const { sufficientBalance } = require('../../../app/scripts/lib/util')
+
+
+describe('SufficientBalance', function () {
+  it('returns true if max tx cost is equal to balance.', function () {
+    const tx = {
+      'value': '0x1',
+      'gas': '0x2',
+      'gasPrice': '0x3',
+    }
+    const balance = '0x8'
+
+    const result = sufficientBalance(tx, balance)
+    assert.ok(result, 'sufficient balance found.')
+  })
+
+  it('returns true if max tx cost is less than balance.', function () {
+    const tx = {
+      'value': '0x1',
+      'gas': '0x2',
+      'gasPrice': '0x3',
+    }
+    const balance = '0x9'
+
+    const result = sufficientBalance(tx, balance)
+    assert.ok(result, 'sufficient balance found.')
+  })
+
+  it('returns false if max tx cost is more than balance.', function () {
+    const tx = {
+      'value': '0x1',
+      'gas': '0x2',
+      'gasPrice': '0x3',
+    }
+    const balance = '0x6'
+
+    const result = sufficientBalance(tx, balance)
+    assert.ok(!result, 'insufficient balance found.')
+  })
+})
+\ No newline at end of file