Mostly set up

tests/e2e/custom-assertions/elementCount.js

@@ -0,0 +1,25 @@
+// A custom Nightwatch assertion.
+// The assertion name is the filename.
+// Example usage:
+//
+//   browser.assert.elementCount(selector, count)
+//
+// For more information on custom assertions see:
+// http://nightwatchjs.org/guide#writing-custom-assertions
+
+exports.assertion = function elementCount (selector, count) {
+  this.message = 'Testing if element "' + selector + '" has count: ' + count;
+  this.expected = count;
+  this.pass = (value) => {
+    return value === count;
+  };
+  this.value = (result) => {
+    return result.value;
+  };
+  function evaluator (_selector) {
+    return document.querySelectorAll(_selector).length;
+  }
+  this.command = (cb) => {
+    return this.api.execute(evaluator, [selector], cb);
+  };
+};