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moby--moby/client/ping_test.go
Brian Goff 27ef09a46f Set ping version even on error
In some cases a server may return an error on the ping response but
still provide version details. The client should use these values when
available.

Signed-off-by: Brian Goff <cpuguy83@gmail.com>
2017-06-29 12:42:14 -04:00

82 lines
2.6 KiB
Go

package client
import (
"errors"
"io/ioutil"
"net/http"
"strings"
"testing"
"github.com/stretchr/testify/assert"
"golang.org/x/net/context"
)
// TestPingFail tests that when a server sends a non-successful response that we
// can still grab API details, when set.
// Some of this is just excercising the code paths to make sure there are no
// panics.
func TestPingFail(t *testing.T) {
var withHeader bool
client := &Client{
client: newMockClient(func(req *http.Request) (*http.Response, error) {
resp := &http.Response{StatusCode: http.StatusInternalServerError}
if withHeader {
resp.Header = http.Header{}
resp.Header.Set("API-Version", "awesome")
resp.Header.Set("Docker-Experimental", "true")
}
resp.Body = ioutil.NopCloser(strings.NewReader("some error with the server"))
return resp, nil
}),
}
ping, err := client.Ping(context.Background())
assert.Error(t, err)
assert.Equal(t, false, ping.Experimental)
assert.Equal(t, "", ping.APIVersion)
withHeader = true
ping2, err := client.Ping(context.Background())
assert.Error(t, err)
assert.Equal(t, true, ping2.Experimental)
assert.Equal(t, "awesome", ping2.APIVersion)
}
// TestPingWithError tests the case where there is a protocol error in the ping.
// This test is mostly just testing that there are no panics in this code path.
func TestPingWithError(t *testing.T) {
client := &Client{
client: newMockClient(func(req *http.Request) (*http.Response, error) {
resp := &http.Response{StatusCode: http.StatusInternalServerError}
resp.Header = http.Header{}
resp.Header.Set("API-Version", "awesome")
resp.Header.Set("Docker-Experimental", "true")
resp.Body = ioutil.NopCloser(strings.NewReader("some error with the server"))
return resp, errors.New("some error")
}),
}
ping, err := client.Ping(context.Background())
assert.Error(t, err)
assert.Equal(t, false, ping.Experimental)
assert.Equal(t, "", ping.APIVersion)
}
// TestPingSuccess tests that we are able to get the expected API headers/ping
// details on success.
func TestPingSuccess(t *testing.T) {
client := &Client{
client: newMockClient(func(req *http.Request) (*http.Response, error) {
resp := &http.Response{StatusCode: http.StatusInternalServerError}
resp.Header = http.Header{}
resp.Header.Set("API-Version", "awesome")
resp.Header.Set("Docker-Experimental", "true")
resp.Body = ioutil.NopCloser(strings.NewReader("some error with the server"))
return resp, nil
}),
}
ping, err := client.Ping(context.Background())
assert.Error(t, err)
assert.Equal(t, true, ping.Experimental)
assert.Equal(t, "awesome", ping.APIVersion)
}