Test 404 -* error handler for msearch fetch strategy

Fixes #5571

src/ui/public/courier/fetch/strategy/__tests__/search.js

@@ -31,6 +31,57 @@ describe('ui/courier/fetch/strategy/search', () => {
     });
   });
 
+  describe('#handleResponseError()', () => {
+    let error;
+    beforeEach(() => {
+      error = { status: 404, body: { error: { index: '[-*]' } } };
+    });
+
+    it('recovers 404 for index -* with empty response', () => {
+      let resp;
+      search.handleResponseError(reqsFetchParams, error).then(val => resp = val);
+      $rootScope.$apply();
+
+      expect(resp.responses).not.to.be(undefined);
+    });
+
+    it('mocks all of the bundled searches', () => {
+      let resp;
+      reqsFetchParams.push({});
+      search.handleResponseError(reqsFetchParams, error).then(val => resp = val);
+      $rootScope.$apply();
+
+      expect(Array.isArray(resp.responses)).to.be(true);
+      expect(resp.responses.length).to.be(2);
+      resp.responses.forEach(res => {
+        expect(res.hits.total).to.be(0);
+        expect(res.hits.hits.length).to.be(0);
+      });
+    });
+
+    context('when not a 404', () => {
+      it('rejects with the original response', () => {
+        error.status = 403;
+        let err;
+        search.handleResponseError(reqsFetchParams, error).catch(val => err = val);
+        $rootScope.$apply();
+
+        expect(err).to.be(error);
+      });
+    });
+
+    context('when not for -* index', () => {
+      it('rejects with the original response', () => {
+        error.body.error.index = '[foo-*]';
+        let err;
+        search.handleResponseError(reqsFetchParams, error).catch(val => err = val);
+        $rootScope.$apply();
+
+        expect(err).to.be(error);
+      });
+    });
+  });
+
   describe('#reqsFetchParamsToBody()', () => {
     it('filters out any body properties that begin with $', () => {
       let value;