fix(infiniteHits): update lifecycle state (#3983)

Author: francoischalifour

src/connectors/infinite-hits/__tests__/connectInfiniteHits-test.ts

@@ -655,16 +655,36 @@ See documentation: https://www.algolia.com/doc/api-reference/widgets/infinite-hi
   });
 
   describe('getConfiguration', () => {
-    it('adds a `page` to the `SearchParameters`', () => {
+    it('returns `SearchParameters`', () => {
       const renderFn = (): void => {};
       const makeWidget = connectInfiniteHits(renderFn);
       const widget = makeWidget({});
 
-      const nextConfiguration = widget.getConfiguration!(
-        new SearchParameters()
+      expect(widget.getConfiguration!(new SearchParameters())).toBeInstanceOf(
+        SearchParameters
       );
+    });
+
+    it('adds a `page` to the `SearchParameters`', () => {
+      const renderFn = (): void => {};
+      const makeWidget = connectInfiniteHits(renderFn);
+      const widget = makeWidget({});
+
+      expect(widget.getConfiguration!(new SearchParameters()).page).toEqual(0);
+    });
+
+    it('supports previous `page` from the `SearchParameters`', () => {
+      const renderFn = (): void => {};
+      const makeWidget = connectInfiniteHits(renderFn);
+      const widget = makeWidget({});
+
+      expect(
+        widget.getConfiguration!(new SearchParameters({ page: 0 })).page
+      ).toEqual(0);
 
-      expect(nextConfiguration.page).toBe(0);
+      expect(
+        widget.getConfiguration!(new SearchParameters({ page: 6 })).page
+      ).toEqual(6);
     });
 
     it('adds the TAG_PLACEHOLDER to the `SearchParameters`', () => {

src/connectors/infinite-hits/connectInfiniteHits.ts

@@ -90,7 +90,7 @@ const connectInfiniteHits: InfiniteHitsConnector = (
 
       getConfiguration(config) {
         const parameters = {
-          page: 0,
+          page: config.page || 0,
         };
 
         if (!escapeHTML) {