v4 initial commit

tests/e2e/custom-commands/openHomepage.js

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+/**
+ * A basic Nightwatch custom command
+ *  which demonstrates usage of ES6 async/await instead of using callbacks.
+ *  The command name is the filename and the exported "command" function is the command.
+ *
+ * Example usage:
+ *   browser.openHomepage();
+ *
+ * For more information on writing custom commands see:
+ *   https://nightwatchjs.org/guide/extending-nightwatch/#writing-custom-commands
+ *
+ */
+module.exports = {
+  command: async function () {
+    // Other Nightwatch commands are available via "this"
+    // .init() simply calls .url() command with the value of the "launch_url" setting
+    this.init();
+    this.waitForElementVisible("#app");
+
+    const result = await this.elements("css selector", "#app ul");
+    this.assert.strictEqual(result.value.length, 3);
+  },
+};