[Maps] fix point to point source regression (elastic#60930)

* [Maps] fix pew pew regression

* add functional test for pew pew source

x-pack/legacy/plugins/maps/public/layers/sources/es_search_source/es_search_source.js

@@ -149,11 +149,14 @@ export class ESSearchSource extends AbstractESSource {
   }
 
   renderSourceSettingsEditor({ onChange }) {
+    const getGeoField = () => {
+      return this._getGeoField();
+    };
     return (
       <UpdateSourceEditor
         source={this}
         indexPatternId={this.getIndexPatternId()}
-        getGeoField={this._getGeoField}
+        getGeoField={getGeoField}
         onChange={onChange}
         tooltipFields={this._tooltipFields}
         sortField={this._descriptor.sortField}

x-pack/legacy/plugins/maps/public/layers/sources/es_source.js

@@ -231,7 +231,7 @@ export class AbstractESSource extends AbstractVectorSource {
     }
   }
 
-  _getGeoField = async () => {
+  async _getGeoField() {
     const indexPattern = await this.getIndexPattern();
     const geoField = indexPattern.fields.getByName(this._descriptor.geoField);
     if (!geoField) {
@@ -243,7 +243,7 @@ export class AbstractESSource extends AbstractVectorSource {
       );
     }
     return geoField;
-  };
+  }
 
   async getDisplayName() {
     try {

x-pack/test/functional/apps/maps/es_pew_pew_source.js

@@ -0,0 +1,39 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+import expect from '@kbn/expect';
+
+export default function({ getPageObjects, getService }) {
+  const PageObjects = getPageObjects(['maps']);
+  const inspector = getService('inspector');
+
+  const VECTOR_SOURCE_ID = '67c1de2c-2fc5-4425-8983-094b589afe61';
+
+  describe('point to point source', () => {
+    before(async () => {
+      await PageObjects.maps.loadSavedMap('pew pew demo');
+    });
+
+    it('should request source clusters for destination locations', async () => {
+      await inspector.open();
+      await inspector.openInspectorRequestsView();
+      const requestStats = await inspector.getTableData();
+      const hits = PageObjects.maps.getInspectorStatRowHit(requestStats, 'Hits');
+      const totalHits = PageObjects.maps.getInspectorStatRowHit(requestStats, 'Hits (total)');
+      await inspector.close();
+
+      expect(hits).to.equal('0');
+      expect(totalHits).to.equal('4');
+    });
+
+    it('should render lines', async () => {
+      const mapboxStyle = await PageObjects.maps.getMapboxStyle();
+      const features = mapboxStyle.sources[VECTOR_SOURCE_ID].data.features;
+      expect(features.length).to.equal(2);
+      expect(features[0].geometry.type).to.equal('LineString');
+    });
+  });
+}

x-pack/test/functional/apps/maps/index.js

@@ -41,6 +41,7 @@ export default function({ loadTestFile, getService }) {
     describe('', function() {
       this.tags('ciGroup10');
       loadTestFile(require.resolve('./es_geo_grid_source'));
+      loadTestFile(require.resolve('./es_pew_pew_source'));
       loadTestFile(require.resolve('./joins'));
       loadTestFile(require.resolve('./add_layer_panel'));
       loadTestFile(require.resolve('./import_geojson'));