chore: add smokescreen e2e test for all panels (#66230)

e2e/smoke-tests-suite/panels_smokescreen.spec.ts

@@ -0,0 +1,45 @@
+import { e2e } from '@grafana/e2e';
+import { GrafanaBootConfig } from '@grafana/runtime';
+
+e2e.scenario({
+  describeName: 'Panels smokescreen',
+  itName: 'Tests each panel type in the panel edit view to ensure no crash',
+  addScenarioDataSource: false,
+  addScenarioDashBoard: false,
+  skipScenario: false,
+  scenario: () => {
+    e2e.flows.addDashboard();
+
+    // TODO: Try and use e2e.flows.addPanel() instead of block below
+    try {
+      e2e.components.PageToolbar.itemButton('Add panel button').should('be.visible');
+      e2e.components.PageToolbar.itemButton('Add panel button').click();
+    } catch (e) {
+      // Depending on the screen size, the "Add panel" button might be hidden
+      e2e.components.PageToolbar.item('Show more items').click();
+      e2e.components.PageToolbar.item('Add panel button').last().click();
+    }
+    e2e.pages.AddDashboard.itemButton('Add new visualization menu item').should('be.visible');
+    e2e.pages.AddDashboard.itemButton('Add new visualization menu item').click();
+
+    e2e()
+      .window()
+      .then((win: Cypress.AUTWindow & { grafanaBootData: GrafanaBootConfig['bootData'] }) => {
+        // Loop through every panel type and ensure no crash
+        Object.entries(win.grafanaBootData.settings.panels).forEach(([_, panel]) => {
+          // TODO: Remove Flame Graph check as part of addressing #66803
+          if (!panel.hideFromList && panel.state !== 'deprecated' && panel.name !== 'Flame Graph') {
+            e2e.components.PanelEditor.toggleVizPicker().click();
+            e2e.components.PluginVisualization.item(panel.name).scrollIntoView().should('be.visible').click();
+
+            // Wait for panel to load (TODO: Better way to do this?)
+            cy.wait(500);
+
+            e2e.components.PanelEditor.toggleVizPicker().should((e) => expect(e).to.contain(panel.name));
+            // TODO: Come up with better check / better failure messaging to clearly indicate which panel failed
+            cy.contains('An unexpected error happened').should('not.exist');
+          }
+        });
+      });
+  },
+});