fix: let strings be strings

Author: daviddias

src/pubsub.js

@@ -286,7 +286,7 @@ module.exports = (common) => {
               expect(subscription).to.exist
 
               subscription.on('data', (msg) => {
-                expect(msg.data).to.equal(expectedString)
+                expect(msg.data.toString()).to.equal(expectedString)
                 subscription.cancel(() => subscription2.cancel(done))
               })
 
@@ -317,7 +317,7 @@ module.exports = (common) => {
 
                 if (receivedMessages.length === expectedMessages) {
                   receivedMessages.forEach((msg) => {
-                    expect(msg).to.be.equal('hi')
+                    expect(msg.toString()).to.be.equal('hi')
                   })
                   subscription.cancel(() => subscription2.cancel(done))
                 }
@@ -357,7 +357,7 @@ module.exports = (common) => {
               }
 
               subscription.on('data', (d) => {
-                expect(d.data).to.equal(expectedString)
+                expect(d.data.toString()).to.equal(expectedString)
                 receivedCount++
                 outputProgress()
                 if (receivedCount >= count) {