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- // Copyright 2017 Google LLC
- //
- // Licensed under the Apache License, Version 2.0 (the "License");
- // you may not use this file except in compliance with the License.
- // You may obtain a copy of the License at
- //
- // http://www.apache.org/licenses/LICENSE-2.0
- //
- // Unless required by applicable law or agreed to in writing, software
- // distributed under the License is distributed on an "AS IS" BASIS,
- // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- // See the License for the specific language governing permissions and
- // limitations under the License.
-
- package main
-
- import (
- "context"
- "encoding/json"
- "fmt"
- "net/http"
- "net/http/httptest"
- "net/url"
- "strconv"
- "testing"
-
- crm "google.golang.org/api/cloudresourcemanager/v1"
- )
-
- //go:generate -command api go run gen.go docurls.go replacements.go -install -api
- //go:generate api cloudresourcemanager:v1
-
- // A handler that mimics paging behavior.
- type pageHandler struct {
- param bool // is page token in a query param, or body?
- err error
- }
-
- const nPages = 3
-
- func (h *pageHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
- v, err := url.ParseRequestURI(r.URL.RequestURI())
- if err != nil {
- h.err = err
- return
- }
-
- var pageToken string
- if h.param {
- pts := v.Query()["pageToken"]
- if len(pts) > 0 {
- pageToken = pts[0]
- }
- } else {
- d := json.NewDecoder(r.Body)
- req := struct{ PageToken *string }{&pageToken}
- if err := d.Decode(&req); err != nil {
- h.err = err
- return
- }
- }
- var start int
- if pageToken != "" {
- start, err = strconv.Atoi(pageToken)
- if err != nil {
- h.err = err
- return
- }
- }
- nextPageToken := ""
- if start+1 < nPages {
- nextPageToken = strconv.Itoa(start + 1)
- }
- fmt.Fprintf(w, `{"nextPageToken": %q}`, nextPageToken)
- }
-
- func TestPagesParam(t *testing.T) {
- handler := &pageHandler{param: true}
- server := httptest.NewServer(handler)
- defer server.Close()
-
- client := &http.Client{}
- s, err := crm.New(client)
- if err != nil {
- t.Fatal(err)
- }
- s.BasePath = server.URL
-
- ctx := context.Background()
- c := s.Projects.List()
-
- countPages := func() int {
- n := 0
- err = c.Pages(ctx, func(*crm.ListProjectsResponse) error {
- n++
- return nil
- })
- if err != nil {
- t.Fatal(err)
- }
- return n
- }
-
- // Pages traverses through all the pages.
- if got, want := countPages(), nPages; got != want {
- t.Errorf("got %d pages, want %d", got, want)
- }
-
- // Pages starts wherever the current page token is.
- c.PageToken("1")
- if got, want := countPages(), nPages-1; got != want {
- t.Errorf("got %d pages, want %d", got, want)
- }
-
- // Pages restores the initial state: we will again visit one fewer
- // page, because the initial page token was reset to "1".
- if got, want := countPages(), nPages-1; got != want {
- t.Errorf("got %d pages, want %d", got, want)
- }
-
- if handler.err != nil {
- t.Fatal(handler.err)
- }
- }
-
- func TestPagesRequestField(t *testing.T) {
- handler := &pageHandler{param: false}
- server := httptest.NewServer(handler)
- defer server.Close()
-
- client := &http.Client{}
- s, err := crm.New(client)
- if err != nil {
- t.Fatal(err)
- }
- s.BasePath = server.URL
-
- ctx := context.Background()
- c := s.Organizations.Search(&crm.SearchOrganizationsRequest{})
-
- countPages := func() int {
- n := 0
- err = c.Pages(ctx, func(*crm.SearchOrganizationsResponse) error {
- n++
- return nil
- })
- if err != nil {
- t.Fatal(err)
- }
- return n
- }
-
- // Pages traverses through all the pages.
- if got, want := countPages(), nPages; got != want {
- t.Errorf("got %d pages, want %d", got, want)
- }
-
- // Pages starts wherever the current page token is.
- c = s.Organizations.Search(&crm.SearchOrganizationsRequest{PageToken: "1"})
- if got, want := countPages(), nPages-1; got != want {
- t.Errorf("got %d pages, want %d", got, want)
- }
-
- // Pages restores the initial state: we will again visit one fewer
- // page, because the initial page token was reset to "1".
- if got, want := countPages(), nPages-1; got != want {
- t.Errorf("got %d pages, want %d", got, want)
- }
- }
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