diff --git a/src/place_picker/place_picker_test.ts b/src/place_picker/place_picker_test.ts
index 6e11142..de6046e 100644
--- a/src/place_picker/place_picker_test.ts
+++ b/src/place_picker/place_picker_test.ts
@@ -5,7 +5,6 @@
  */
 
 // import 'jasmine'; (google3-only)
-import '../testing/fake_gmp_components.js';
 
 import {html, TemplateResult} from 'lit';
 
@@ -68,6 +67,10 @@ const FAKE_PLACES_LIBRARY = {
 describe('PlacePicker', () => {
   const env = new Environment();
 
+  beforeAll(() => {
+    env.defineFakeMapElement();
+  });
+
   async function prepareState(template?: TemplateResult) {
     const root =
         env.render(template ?? html`<gmpx-place-picker></gmpx-place-picker>`);
diff --git a/src/testing/environment.ts b/src/testing/environment.ts
index c7d472a..4cfceb7 100644
--- a/src/testing/environment.ts
+++ b/src/testing/environment.ts
@@ -9,7 +9,9 @@
 import {ReactiveElement, render as litRender, TemplateResult} from 'lit';
 
 import {APILoader} from '../api_loader/api_loader.js';
-import {FAKE_GOOGLE_MAPS} from '../testing/fake_google_maps.js';
+
+import {FakeMapElement} from './fake_gmp_components.js';
+import {FAKE_GOOGLE_MAPS} from './fake_google_maps.js';
 
 declare global {
   module jasmine {
@@ -97,6 +99,11 @@ export class Environment {
     return root;
   }
 
+  defineFakeMapElement() {
+    if (!customElements.get('gmp-map')) {
+      customElements.define('gmp-map', FakeMapElement);
+    }
+  }
 
   /**
    * Waits for all Lit `ReactiveElement` children of the given parent node to
diff --git a/src/testing/fake_gmp_components.ts b/src/testing/fake_gmp_components.ts
index 249bbbc..8cb2bc6 100644
--- a/src/testing/fake_gmp_components.ts
+++ b/src/testing/fake_gmp_components.ts
@@ -19,7 +19,6 @@
  */
 
 import {LitElement} from 'lit';
-import {customElement} from 'lit/decorators.js';
 
 declare global {
   interface HTMLElementTagNameMap {
@@ -27,7 +26,6 @@ declare global {
   }
 }
 
-@customElement('gmp-map')
 export class FakeMapElement extends LitElement {
   readonly innerMap = {} as google.maps.Map;
 }
diff --git a/src/testing/fake_lat_lng.ts b/src/testing/fake_lat_lng.ts
index 8b3750a..2097b25 100644
--- a/src/testing/fake_lat_lng.ts
+++ b/src/testing/fake_lat_lng.ts
@@ -15,8 +15,8 @@ type LatLngBoundsLiteral = google.maps.LatLngBoundsLiteral;
  */
 export class FakeLatLng implements LatLng {
   constructor(
-      private readonly latitude: number,
-      private readonly longitude: number,
+      private readonly latitude = 0,
+      private readonly longitude = 0,
   ) {}
 
   lat(): number {
diff --git a/src/testing/fake_route.ts b/src/testing/fake_route.ts
index 1f18206..5bf9d8e 100644
--- a/src/testing/fake_route.ts
+++ b/src/testing/fake_route.ts
@@ -4,9 +4,10 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-import {FakeLatLngBounds} from './fake_lat_lng.js';
+import {FakeLatLng, FakeLatLngBounds} from './fake_lat_lng.js';
 
 type DirectionsRoute = google.maps.DirectionsRoute;
+type DirectionsLeg = google.maps.DirectionsLeg;
 
 const EMPTY_FAKE_ROUTE: DirectionsRoute = {
   bounds: new FakeLatLngBounds(),
@@ -19,6 +20,16 @@ const EMPTY_FAKE_ROUTE: DirectionsRoute = {
   waypoint_order: [],
 };
 
+const EMPTY_FAKE_LEG: DirectionsLeg = {
+  end_address: '',
+  end_location: new FakeLatLng(),
+  start_address: '',
+  start_location: new FakeLatLng(),
+  steps: [],
+  traffic_speed_entry: [],
+  via_waypoints: [],
+};
+
 /**
  * Makes a fake `google.maps.DirectionsRoute` object for testing purposes.
  *
@@ -28,5 +39,17 @@ const EMPTY_FAKE_ROUTE: DirectionsRoute = {
  */
 export function makeFakeRoute(fields: Partial<DirectionsRoute> = {}):
     DirectionsRoute {
-  return {...EMPTY_FAKE_ROUTE, ...fields};
-}
+      return {...EMPTY_FAKE_ROUTE, ...fields};
+    }
+
+/**
+ * Makes a fake `google.maps.DirectionsLeg` object for testing purposes.
+ *
+ * @param fields - An object of fields of the `DirectionsLeg`. Any fields not
+ *     provided will default to empty strings, empty arrays, or the LatLng
+ *     (0, 0).
+ */
+export function makeFakeLeg(fields: Partial<DirectionsLeg> = {}):
+    DirectionsLeg {
+      return {...EMPTY_FAKE_LEG, ...fields};
+    }
diff --git a/src/utils/place_utils.ts b/src/utils/place_utils.ts
index 737e46a..ee8cd65 100644
--- a/src/utils/place_utils.ts
+++ b/src/utils/place_utils.ts
@@ -59,7 +59,7 @@ function isPlace(data: LatLng|LatLngLiteral|Place): data is Place {
   return data.hasOwnProperty('id');
 }
 
-function isLatLng(data: LatLng|LatLngLiteral): data is LatLng {
+export function isLatLng(data: LatLng|LatLngLiteral): data is LatLng {
   return typeof data.lat === 'function';
 }