diff --git a/test/helpers.money.test.ts b/test/helpers.money.test.ts
index ff426ed..1f13e21 100644
--- a/test/helpers.money.test.ts
+++ b/test/helpers.money.test.ts
@@ -94,4 +94,90 @@ describe('convertSubunitsToFloat', () => {
             expect(sdk.helpers.money.convertSubunitsToFloat(subunits, currency)).toBe(float);
         });
     });
+});
+
+describe('formatMoney', () => {
+    it('should not show the currency, when the currency matches locale', () => {
+        const currencyAndLocaleList = [
+            {
+                money: {
+                    currency: 'CAD',
+                    amount: 123456,
+                    formatted: '$1,234.56'
+                },
+                locale: 'en-CA',
+            },
+            {
+                money: {
+                    currency: 'GBP',
+                    amount: 123456,
+                    formatted: '£1,234.56'
+                },
+                locale: 'en-GB',
+            },
+            {
+                money: {
+                    currency: 'USD',
+                    amount: 123456,
+                    formatted: '$1,234.56'
+                },
+                locale: 'en-US',
+            },
+        ];
+
+        currencyAndLocaleList.forEach(({ money, locale }) => {
+            expect(sdk.helpers.money.formatMoney(money, locale)).toBe(money.formatted);
+        });
+    });
+
+    it('should show the currency, when the currency does not match locale', () => {
+        // Note: this is only true for currencies that share a symbol, like "$".
+        // a currency like GBP will not show the currency; the £ symbol is sufficient
+        const currencyAndLocaleList = [
+            {
+                money: {
+                    currency: 'CAD',
+                    amount: 123456,
+                    formatted: 'CA$1,234.56'
+                },
+                locale: 'en-US',
+            },
+            {
+                money: {
+                    currency: 'USD',
+                    amount: 123456,
+                    formatted: 'US$1,234.56'
+                },
+                locale: 'en-CA',
+            },
+        ];
+
+        currencyAndLocaleList.forEach(({ money, locale }) => {
+            expect(sdk.helpers.money.formatMoney(money, locale)).toBe(money.formatted);
+        });
+    });
+    it('should default to en-US, when the locale is invalid', () => {
+        const currencyAndLocaleList = [
+            {
+                money: {
+                    currency: 'CAD',
+                    amount: 123456,
+                    formatted: 'CA$1,234.56'
+                },
+                locale: 'fake-FAKE',
+            },
+            {
+                money: {
+                    currency: 'USD',
+                    amount: 123456,
+                    formatted: '$1,234.56'
+                },
+                locale: 'fake-FAKE',
+            },
+        ];
+
+        currencyAndLocaleList.forEach(({ money, locale }) => {
+            expect(sdk.helpers.money.formatMoney(money, locale)).toBe(money.formatted);
+        });
+    });
 });
\ No newline at end of file