Handling errors

src/ConvertBTC.js

@@ -1,9 +1,16 @@
 const request = require('request');
 
+/* eslint consistent-return: 0 */
 function convertBTC(currency = 'USD', amount = 1) {
   const url = `https://apiv2.bitcoinaverage.com/convert/global?from=BTC&to=${currency}&amount=${amount}`;
   request(url, (error, response, body) => {
-    const apiResponse = JSON.parse(body);
+    let apiResponse;
+    try {
+      apiResponse = JSON.parse(body);
+    } catch (parseError) {
+      console.log('Something went wrong with the API. Try in a few minutes.');
+      return parseError;
+    }
     console.log(`${amount} BTC to ${currency} = ${apiResponse.price}`);
   });
 }

tests/ConvertBTC.spec.js

@@ -62,4 +62,17 @@ describe('ConvertBTC', () => {
       done();
     }, 300);
   });
+
+  it('should message user when api reply with error', (done) => {
+    nock('https://apiv2.bitcoinaverage.com')
+      .get('/convert/global')
+      .query({ from: 'BTC', to: 'BRL', amount: 1 })
+      .replyWithError('Error');
+
+    convertBTC('BRL');
+    setTimeout(() => {
+      expect(consoleStub).to.be.calledWith('Something went wrong with the API. Try in a few minutes.');
+      done();
+    }, 300);
+  });
 });