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// Copyright 2017 Google LLC.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
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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