chore: move tooling to vue-cli v3.0.0-rc.2

tests/e2e/custom-assertions/elementCount.js

@@ -0,0 +1,19 @@
+// 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 = val => val === count
+  this.value = res => res.value
+  function evaluator (_selector) {
+    return document.querySelectorAll(_selector).length
+  }
+  this.command = cb => this.api.execute(evaluator, [selector], cb)
+}