[Lens] Add tests for index pattern switching

x-pack/test/functional/apps/lens/persistent_context.ts

@@ -67,6 +67,13 @@ export default function ({ getService, getPageObjects }: FtrProviderContext) {
       await filterBar.hasFilter('ip', '97.220.3.248', false, true);
     });
 
+    it('keeps selected index pattern after refresh', async () => {
+      await PageObjects.lens.switchDataPanelIndexPattern('otherpattern');
+      await browser.refresh();
+      await PageObjects.header.waitUntilLoadingHasFinished();
+      expect(await PageObjects.lens.getDataPanelIndexPattern()).to.equal('otherpattern');
+    });
+
     it('keeps time range and pinned filters after refreshing directly after saving', async () => {
       // restore defaults so visualization becomes saveable
       await security.testUser.restoreDefaults();

x-pack/test/functional/apps/lens/smokescreen.ts

@@ -308,5 +308,11 @@ export default function ({ getService, getPageObjects }: FtrProviderContext) {
       expect(await PageObjects.lens.getDatatableHeaderText(1)).to.eql('Average of bytes');
       expect(await PageObjects.lens.getDatatableCellText(0, 1)).to.eql('6,011.351');
     });
+
+    it('should allow to change index pattern', async () => {
+      await PageObjects.lens.switchFirstLayerIndexPattern('otherpattern');
+      expect(await PageObjects.lens.getFirstLayerIndexPattern()).to.equal('otherpattern');
+      expect(await PageObjects.lens.isShowingNoResults()).to.equal(true);
+    });
   });
 }

x-pack/test/functional/page_objects/lens_page.ts

@@ -293,6 +293,38 @@ export function LensPageProvider({ getService, getPageObjects }: FtrProviderCont
       await testSubjects.click('lnsLayerAddButton');
     },
 
+    /**
+     * Changes the index pattern in the data panel
+     */
+    async switchDataPanelIndexPattern(name: string) {
+      await testSubjects.click('indexPattern-switch-link');
+      await find.clickByCssSelector(`[title="${name}"]`);
+      await PageObjects.header.waitUntilLoadingHasFinished();
+    },
+
+    /**
+     * Changes the index pattern for the first layer
+     */
+    async switchFirstLayerIndexPattern(name: string) {
+      await testSubjects.click('lns_layerIndexPatternLabel');
+      await find.clickByCssSelector(`[title="${name}"]`);
+      await PageObjects.header.waitUntilLoadingHasFinished();
+    },
+
+    /**
+     * Returns the current index pattern of the data panel
+     */
+    async getDataPanelIndexPattern() {
+      return await (await testSubjects.find('indexPattern-switch-link')).getAttribute('title');
+    },
+
+    /**
+     * Returns the current index pattern of the first layer
+     */
+    async getFirstLayerIndexPattern() {
+      return await (await testSubjects.find('lns_layerIndexPatternLabel')).getAttribute('title');
+    },
+
     async linkedToOriginatingApp() {
       await PageObjects.header.waitUntilLoadingHasFinished();
       await testSubjects.existOrFail('lnsApp_saveAndReturnButton');
@@ -316,6 +348,12 @@ export function LensPageProvider({ getService, getPageObjects }: FtrProviderCont
       return await trigger.getVisibleText();
     },
 
+    async isShowingNoResults() {
+      return (
+        (await (await testSubjects.find('lnsWorkspace')).getVisibleText()) === 'No results found'
+      );
+    },
+
     /**
      * Gets text of the specified datatable header cell
      *