Adding image snapshots for graphs

e2e/helpers/util.js

@@ -0,0 +1,13 @@
+import { Base64 } from 'js-base64'
+
+const mermaidUrl = (graphStr, options) => {
+  const obj = {
+    code: graphStr,
+    mermaid: options
+  }
+  const objStr = JSON.stringify(obj)
+  // console.log(Base64)
+  return 'http://localhost:9000/e2e.html?graph=' + Base64.encodeURI(objStr)
+}
+
+export default mermaidUrl