Files
fn-serverless/api/server/runner_test.go
Reed Allman 700078ccb9 bubble up some docker errors to user
currently:

* container ran out of memory (code 137)
* container exited with other code != 0
* unable to pull image (auth/404)

there may be others but this is a good start (the most common). notably, for
both hot and cold these should bubble up (if deterministic, which hub isn't
always), and these are useful for users to use in debugging why things aren't
working.

added tests to make sure that these behaviors are working.

also changed the behavior such that when the container exits we return a 502
instead of a 503, just to be able to distinguish the fact that fn is working
as expected but the container is acting funky (400 is weird here, so idk).

removed references to old IsUserVisible crap and slightly changed the
interface for RunResult for plumbing reasons (to get the error type,
specifically).

fixed an issue where if ~/.docker/config.json exists sometimes pulling images
wouldn't work deterministically (should be more inline w/ expectations now)

closes #275
2017-09-07 11:55:50 -07:00

309 lines
8.9 KiB
Go

package server
import (
"bytes"
"context"
"errors"
"net/http"
"strings"
"testing"
"github.com/fnproject/fn/api/agent"
"github.com/fnproject/fn/api/datastore"
"github.com/fnproject/fn/api/logs"
"github.com/fnproject/fn/api/models"
"github.com/fnproject/fn/api/mqs"
)
func testRunner(t *testing.T, args ...interface{}) (agent.Agent, context.CancelFunc) {
ds := datastore.NewMock()
var mq models.MessageQueue = &mqs.Mock{}
for _, a := range args {
switch arg := a.(type) {
case models.Datastore:
ds = arg
case models.MessageQueue:
mq = arg
}
}
r := agent.New(ds, mq)
return r, func() { r.Close() }
}
func TestRouteRunnerGet(t *testing.T) {
buf := setLogBuffer()
ds := datastore.NewMockInit(
[]*models.App{
{Name: "myapp", Config: models.Config{}},
}, nil, nil,
)
rnr, cancel := testRunner(t, ds)
defer cancel()
logDB := logs.NewMock()
srv := testServer(ds, &mqs.Mock{}, logDB, rnr)
for i, test := range []struct {
path string
body string
expectedCode int
expectedError error
}{
{"/route", "", http.StatusNotFound, nil},
{"/r/app/route", "", http.StatusNotFound, models.ErrAppsNotFound},
{"/r/myapp/route", "", http.StatusNotFound, models.ErrRoutesNotFound},
} {
_, rec := routerRequest(t, srv.Router, "GET", test.path, nil)
if rec.Code != test.expectedCode {
t.Log(buf.String())
t.Errorf("Test %d: Expected status code to be %d but was %d",
i, test.expectedCode, rec.Code)
}
if test.expectedError != nil {
resp := getErrorResponse(t, rec)
if !strings.Contains(resp.Error.Message, test.expectedError.Error()) {
t.Log(buf.String())
t.Errorf("Test %d: Expected error message to have `%s`, but got `%s`",
i, test.expectedError.Error(), resp.Error.Message)
}
}
}
}
func TestRouteRunnerPost(t *testing.T) {
buf := setLogBuffer()
ds := datastore.NewMockInit(
[]*models.App{
{Name: "myapp", Config: models.Config{}},
}, nil, nil,
)
rnr, cancel := testRunner(t, ds)
defer cancel()
fnl := logs.NewMock()
srv := testServer(ds, &mqs.Mock{}, fnl, rnr)
for i, test := range []struct {
path string
body string
expectedCode int
expectedError error
}{
{"/route", `{ "payload": "" }`, http.StatusNotFound, nil},
{"/r/app/route", `{ "payload": "" }`, http.StatusNotFound, models.ErrAppsNotFound},
{"/r/myapp/route", `{ "payload": "" }`, http.StatusNotFound, models.ErrRoutesNotFound},
} {
body := bytes.NewBuffer([]byte(test.body))
_, rec := routerRequest(t, srv.Router, "POST", test.path, body)
if rec.Code != test.expectedCode {
t.Log(buf.String())
t.Errorf("Test %d: Expected status code to be %d but was %d",
i, test.expectedCode, rec.Code)
}
if test.expectedError != nil {
resp := getErrorResponse(t, rec)
respMsg := resp.Error.Message
expMsg := test.expectedError.Error()
if respMsg != expMsg && !strings.Contains(respMsg, expMsg) {
t.Log(buf.String())
t.Errorf("Test %d: Expected error message to have `%s`",
i, test.expectedError.Error())
}
}
}
}
func TestRouteRunnerExecution(t *testing.T) {
buf := setLogBuffer()
ds := datastore.NewMockInit(
[]*models.App{
{Name: "myapp", Config: models.Config{}},
},
[]*models.Route{
{Path: "/", AppName: "myapp", Image: "fnproject/hello", Headers: map[string][]string{"X-Function": {"Test"}}},
{Path: "/myroute", AppName: "myapp", Image: "fnproject/hello", Headers: map[string][]string{"X-Function": {"Test"}}},
{Path: "/myerror", AppName: "myapp", Image: "fnproject/error", Headers: map[string][]string{"X-Function": {"Test"}}},
{Path: "/mydne", AppName: "myapp", Image: "fnproject/imagethatdoesnotexist"},
{Path: "/mydnehot", AppName: "myapp", Image: "fnproject/imagethatdoesnotexist", Format: "http"},
}, nil,
)
rnr, cancelrnr := testRunner(t, ds)
defer cancelrnr()
fnl := logs.NewMock()
srv := testServer(ds, &mqs.Mock{}, fnl, rnr)
for i, test := range []struct {
path string
body string
method string
expectedCode int
expectedHeaders map[string][]string
}{
{"/r/myapp/", ``, "GET", http.StatusOK, map[string][]string{"X-Function": {"Test"}}},
{"/r/myapp/myroute", ``, "GET", http.StatusOK, map[string][]string{"X-Function": {"Test"}}},
{"/r/myapp/myerror", ``, "GET", http.StatusBadGateway, map[string][]string{"X-Function": {"Test"}}},
{"/r/myapp/mydne", ``, "GET", http.StatusNotFound, nil},
{"/r/myapp/mydnehot", ``, "GET", http.StatusNotFound, nil},
// Added same tests again to check if time is reduced by the auth cache
{"/r/myapp/", ``, "GET", http.StatusOK, map[string][]string{"X-Function": {"Test"}}},
{"/r/myapp/myroute", ``, "GET", http.StatusOK, map[string][]string{"X-Function": {"Test"}}},
{"/r/myapp/myerror", ``, "GET", http.StatusBadGateway, map[string][]string{"X-Function": {"Test"}}},
} {
body := strings.NewReader(test.body)
_, rec := routerRequest(t, srv.Router, test.method, test.path, body)
if rec.Code != test.expectedCode {
t.Log(buf.String())
t.Errorf("Test %d: Expected status code to be %d but was %d",
i, test.expectedCode, rec.Code)
}
if test.expectedHeaders == nil {
continue
}
for name, header := range test.expectedHeaders {
if header[0] != rec.Header().Get(name) {
t.Log(buf.String())
t.Errorf("Test %d: Expected header `%s` to be %s but was %s",
i, name, header[0], rec.Header().Get(name))
}
}
}
}
// implement models.MQ and models.APIError
type errorMQ struct {
error
code int
}
func (mock *errorMQ) Push(context.Context, *models.Call) (*models.Call, error) { return nil, mock }
func (mock *errorMQ) Reserve(context.Context) (*models.Call, error) { return nil, mock }
func (mock *errorMQ) Delete(context.Context, *models.Call) error { return mock }
func (mock *errorMQ) Code() int { return mock.code }
func TestFailedEnqueue(t *testing.T) {
buf := setLogBuffer()
ds := datastore.NewMockInit(
[]*models.App{
{Name: "myapp", Config: models.Config{}},
},
[]*models.Route{
{Path: "/dummy", AppName: "myapp", Image: "dummy/dummy", Type: "async"},
}, nil,
)
err := errors.New("Unable to push task to queue")
mq := &errorMQ{err, http.StatusInternalServerError}
fnl := logs.NewMock()
rnr, cancelrnr := testRunner(t, ds, mq)
defer cancelrnr()
srv := testServer(ds, mq, fnl, rnr)
for i, test := range []struct {
path string
body string
method string
expectedCode int
expectedHeaders map[string][]string
}{
{"/r/myapp/dummy", ``, "POST", http.StatusInternalServerError, nil},
} {
body := strings.NewReader(test.body)
_, rec := routerRequest(t, srv.Router, test.method, test.path, body)
if rec.Code != test.expectedCode {
t.Log(buf.String())
t.Errorf("Test %d: Expected status code to be %d but was %d",
i, test.expectedCode, rec.Code)
}
}
}
func TestRouteRunnerTimeout(t *testing.T) {
t.Skip("doesn't work on old Ubuntu")
buf := setLogBuffer()
ds := datastore.NewMockInit(
[]*models.App{
{Name: "myapp", Config: models.Config{}},
},
[]*models.Route{
{Path: "/sleeper", AppName: "myapp", Image: "fnproject/sleeper", Timeout: 1},
}, nil,
)
rnr, cancelrnr := testRunner(t, ds)
defer cancelrnr()
fnl := logs.NewMock()
srv := testServer(ds, &mqs.Mock{}, fnl, rnr)
for i, test := range []struct {
path string
body string
method string
expectedCode int
expectedHeaders map[string][]string
}{
{"/r/myapp/sleeper", `{"sleep": 0}`, "POST", http.StatusOK, nil},
{"/r/myapp/sleeper", `{"sleep": 2}`, "POST", http.StatusGatewayTimeout, nil},
} {
body := strings.NewReader(test.body)
_, rec := routerRequest(t, srv.Router, test.method, test.path, body)
if rec.Code != test.expectedCode {
t.Log(buf.String())
t.Errorf("Test %d: Expected status code to be %d but was %d",
i, test.expectedCode, rec.Code)
}
if test.expectedHeaders == nil {
continue
}
for name, header := range test.expectedHeaders {
if header[0] != rec.Header().Get(name) {
t.Log(buf.String())
t.Errorf("Test %d: Expected header `%s` to be %s but was %s",
i, name, header[0], rec.Header().Get(name))
}
}
}
}
//func TestMatchRoute(t *testing.T) {
//buf := setLogBuffer()
//for i, test := range []struct {
//baseRoute string
//route string
//expectedParams []Param
//}{
//{"/myroute/", `/myroute/`, nil},
//{"/myroute/:mybigparam", `/myroute/1`, []Param{{"mybigparam", "1"}}},
//{"/:param/*test", `/1/2`, []Param{{"param", "1"}, {"test", "/2"}}},
//} {
//if params, match := matchRoute(test.baseRoute, test.route); match {
//if test.expectedParams != nil {
//for j, param := range test.expectedParams {
//if params[j].Key != param.Key || params[j].Value != param.Value {
//t.Log(buf.String())
//t.Errorf("Test %d: expected param %d, key = %s, value = %s", i, j, param.Key, param.Value)
//}
//}
//}
//} else {
//t.Log(buf.String())
//t.Errorf("Test %d: %s should match %s", i, test.route, test.baseRoute)
//}
//}
//}