MM-16543 Fix Elasticsearch only returning one page of results (#11528)

* MM-16543 Add mocking for einterfaces packages

* MM-16543 Fix Elasticsearch only returning one page of results

* Remove license checks for einterface mocks

einterfaces/mocks/MessageExportInterface.go

@@ -0,0 +1,56 @@
+// Code generated by mockery v1.0.0. DO NOT EDIT.
+
+// Regenerate this file using `make einterfaces-mocks`.
+
+package mocks
+
+import context "context"
+
+import mock "github.com/stretchr/testify/mock"
+import model "github.com/mattermost/mattermost-server/model"
+
+// MessageExportInterface is an autogenerated mock type for the MessageExportInterface type
+type MessageExportInterface struct {
+	mock.Mock
+}
+
+// RunExport provides a mock function with given fields: format, since
+func (_m *MessageExportInterface) RunExport(format string, since int64) *model.AppError {
+	ret := _m.Called(format, since)
+
+	var r0 *model.AppError
+	if rf, ok := ret.Get(0).(func(string, int64) *model.AppError); ok {
+		r0 = rf(format, since)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*model.AppError)
+		}
+	}
+
+	return r0
+}
+
+// StartSynchronizeJob provides a mock function with given fields: ctx, exportFromTimestamp
+func (_m *MessageExportInterface) StartSynchronizeJob(ctx context.Context, exportFromTimestamp int64) (*model.Job, *model.AppError) {
+	ret := _m.Called(ctx, exportFromTimestamp)
+
+	var r0 *model.Job
+	if rf, ok := ret.Get(0).(func(context.Context, int64) *model.Job); ok {
+		r0 = rf(ctx, exportFromTimestamp)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*model.Job)
+		}
+	}
+
+	var r1 *model.AppError
+	if rf, ok := ret.Get(1).(func(context.Context, int64) *model.AppError); ok {
+		r1 = rf(ctx, exportFromTimestamp)
+	} else {
+		if ret.Get(1) != nil {
+			r1 = ret.Get(1).(*model.AppError)
+		}
+	}
+
+	return r0, r1
+}