Update tests for parallelism

tests/setupTests.js

@@ -0,0 +1,21 @@
+import expect from 'expect'
+
+expect.extend({
+    toMatchSnapshot(received, original) {
+
+      if(received.data.equals(original.data)){
+        return {
+          message: () => `snapshots are equal`,
+          pass: true
+        }
+      }
+
+    //   console.log(received.data.toString('hex'))
+    //   console.log(original.data.toString('hex'))
+
+      return {
+        message: () => `snapshots are not equal`,
+        pass: false
+      }
+    },
+  });