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package pagination
import (
"fmt"
"net/http"
"testing"
"github.com/mitchellh/mapstructure"
"github.com/rackspace/gophercloud/testhelper"
)
// SinglePage sample and test cases.
type SinglePageResult struct {
SinglePageBase
}
func (r SinglePageResult) IsEmpty() (bool, error) {
is, err := ExtractSingleInts(r)
if err != nil {
return true, err
}
return len(is) == 0, nil
}
func ExtractSingleInts(page Page) ([]int, error) {
var response struct {
Ints []int `mapstructure:"ints"`
}
err := mapstructure.Decode(page.(SinglePageResult).Body, &response)
if err != nil {
return nil, err
}
return response.Ints, nil
}
func setupSinglePaged() Pager {
testhelper.SetupHTTP()
client := createClient()
testhelper.Mux.HandleFunc("/only", func(w http.ResponseWriter, r *http.Request) {
w.Header().Add("Content-Type", "application/json")
fmt.Fprintf(w, `{ "ints": [1, 2, 3] }`)
})
createPage := func(r PageResult) Page {
return SinglePageResult{SinglePageBase(r)}
}
return NewPager(client, testhelper.Server.URL+"/only", createPage)
}
func TestEnumerateSinglePaged(t *testing.T) {
callCount := 0
pager := setupSinglePaged()
defer testhelper.TeardownHTTP()
err := pager.EachPage(func(page Page) (bool, error) {
callCount++
expected := []int{1, 2, 3}
actual, err := ExtractSingleInts(page)
testhelper.AssertNoErr(t, err)
testhelper.CheckDeepEquals(t, expected, actual)
return true, nil
})
testhelper.CheckNoErr(t, err)
testhelper.CheckEquals(t, 1, callCount)
}
func TestAllPagesSingle(t *testing.T) {
pager := setupSinglePaged()
defer testhelper.TeardownHTTP()
page, err := pager.AllPages()
testhelper.AssertNoErr(t, err)
expected := []int{1, 2, 3}
actual, err := ExtractSingleInts(page)
testhelper.AssertNoErr(t, err)
testhelper.CheckDeepEquals(t, expected, actual)
}
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