Automated browser testing (#1415)

* Move automated api tests to api directory

* First pass at automated browser testing

test/automated/browser/lib/errors.js

@@ -0,0 +1,48 @@
+async function listenForErrors(browser, page) {
+  const ignoredErrors = [
+    'ERR_ABORTED',
+    'MEDIA_ERR_SRC_NOT_SUPPORTED',
+  ];
+
+  // Emitted when the page emits an error event (for example, the page crashes)
+  page.on('error', (error) => {
+    throw new Error(`❌ ${error}`);
+  });
+
+  browser.on('error', (error) => {
+    throw new Error(`❌ ${error}`);
+  });
+
+  // Emitted when a script within the page has uncaught exception
+  page.on('pageerror', (error) => {
+    throw new Error(`❌ ${error}`);
+  });
+
+  // Catch all failed requests like 4xx..5xx status codes
+  page.on('requestfailed', (request) => {
+    const ignoreError = ignoredErrors.some(e => request.failure().errorText.includes(e));
+    if (!ignoreError) {
+      throw new Error(
+        `❌ url: ${request.url()}, errText: ${
+          request.failure().errorText
+        }, method: ${request.method()}`
+      );
+    }
+  });
+
+  // Listen for console errors in the browser.
+  page.on('console', msg => {
+    const type = msg._type;
+    if (type !== 'error') {
+        return;
+    }
+
+    const ignoreError = ignoredErrors.some(e => msg._text.includes(e));
+    if (!ignoreError) {
+      throw new Error(`❌ ${msg._text}`);
+    }
+});
+
+}
+
+module.exports.listenForErrors = listenForErrors;