246 lines
6.9 KiB
Go
246 lines
6.9 KiB
Go
// Copyright 2017 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package rpc
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import (
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"context"
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"fmt"
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"net/http"
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"net/http/httptest"
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"strings"
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"testing"
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)
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func confirmStatusCode(t *testing.T, got, want int) {
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t.Helper()
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if got == want {
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return
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}
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if gotName := http.StatusText(got); len(gotName) > 0 {
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if wantName := http.StatusText(want); len(wantName) > 0 {
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t.Fatalf("response status code: got %d (%s), want %d (%s)", got, gotName, want, wantName)
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}
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}
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t.Fatalf("response status code: got %d, want %d", got, want)
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}
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func confirmRequestValidationCode(t *testing.T, method, contentType, body string, expectedStatusCode int) {
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t.Helper()
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s := NewServer()
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request := httptest.NewRequest(method, "http://url.com", strings.NewReader(body))
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if len(contentType) > 0 {
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request.Header.Set("Content-Type", contentType)
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}
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code, err := s.validateRequest(request)
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if code == 0 {
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if err != nil {
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t.Errorf("validation: got error %v, expected nil", err)
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}
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} else if err == nil {
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t.Errorf("validation: code %d: got nil, expected error", code)
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}
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confirmStatusCode(t, code, expectedStatusCode)
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}
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func TestHTTPErrorResponseWithDelete(t *testing.T) {
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confirmRequestValidationCode(t, http.MethodDelete, contentType, "", http.StatusMethodNotAllowed)
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}
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func TestHTTPErrorResponseWithPut(t *testing.T) {
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confirmRequestValidationCode(t, http.MethodPut, contentType, "", http.StatusMethodNotAllowed)
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}
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func TestHTTPErrorResponseWithMaxContentLength(t *testing.T) {
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body := make([]rune, defaultBodyLimit+1)
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confirmRequestValidationCode(t,
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http.MethodPost, contentType, string(body), http.StatusRequestEntityTooLarge)
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}
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func TestHTTPErrorResponseWithEmptyContentType(t *testing.T) {
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confirmRequestValidationCode(t, http.MethodPost, "", "", http.StatusUnsupportedMediaType)
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}
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func TestHTTPErrorResponseWithValidRequest(t *testing.T) {
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confirmRequestValidationCode(t, http.MethodPost, contentType, "", 0)
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}
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func confirmHTTPRequestYieldsStatusCode(t *testing.T, method, contentType, body string, expectedStatusCode int) {
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t.Helper()
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s := Server{}
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ts := httptest.NewServer(&s)
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defer ts.Close()
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request, err := http.NewRequest(method, ts.URL, strings.NewReader(body))
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if err != nil {
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t.Fatalf("failed to create a valid HTTP request: %v", err)
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}
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if len(contentType) > 0 {
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request.Header.Set("Content-Type", contentType)
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}
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resp, err := http.DefaultClient.Do(request)
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if err != nil {
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t.Fatalf("request failed: %v", err)
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}
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resp.Body.Close()
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confirmStatusCode(t, resp.StatusCode, expectedStatusCode)
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}
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func TestHTTPResponseWithEmptyGet(t *testing.T) {
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confirmHTTPRequestYieldsStatusCode(t, http.MethodGet, "", "", http.StatusOK)
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}
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// This checks that maxRequestContentLength is not applied to the response of a request.
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func TestHTTPRespBodyUnlimited(t *testing.T) {
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const respLength = defaultBodyLimit * 3
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s := NewServer()
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defer s.Stop()
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s.RegisterName("test", largeRespService{respLength})
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ts := httptest.NewServer(s)
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defer ts.Close()
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c, err := DialHTTP(ts.URL)
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if err != nil {
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t.Fatal(err)
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}
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defer c.Close()
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var r string
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if err := c.Call(&r, "test_largeResp"); err != nil {
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t.Fatal(err)
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}
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if len(r) != respLength {
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t.Fatalf("response has wrong length %d, want %d", len(r), respLength)
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}
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}
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// Tests that an HTTP error results in an HTTPError instance
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// being returned with the expected attributes.
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func TestHTTPErrorResponse(t *testing.T) {
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ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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http.Error(w, "error has occurred!", http.StatusTeapot)
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}))
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defer ts.Close()
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c, err := DialHTTP(ts.URL)
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if err != nil {
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t.Fatal(err)
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}
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var r string
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err = c.Call(&r, "test_method")
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if err == nil {
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t.Fatal("error was expected")
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}
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httpErr, ok := err.(HTTPError)
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if !ok {
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t.Fatalf("unexpected error type %T", err)
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}
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if httpErr.StatusCode != http.StatusTeapot {
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t.Error("unexpected status code", httpErr.StatusCode)
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}
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if httpErr.Status != "418 I'm a teapot" {
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t.Error("unexpected status text", httpErr.Status)
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}
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if body := string(httpErr.Body); body != "error has occurred!\n" {
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t.Error("unexpected body", body)
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}
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if errMsg := httpErr.Error(); errMsg != "418 I'm a teapot: error has occurred!\n" {
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t.Error("unexpected error message", errMsg)
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}
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}
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func TestHTTPPeerInfo(t *testing.T) {
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s := newTestServer()
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defer s.Stop()
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ts := httptest.NewServer(s)
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defer ts.Close()
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c, err := Dial(ts.URL)
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if err != nil {
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t.Fatal(err)
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}
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c.SetHeader("user-agent", "ua-testing")
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c.SetHeader("origin", "origin.example.com")
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// Request peer information.
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var info PeerInfo
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if err := c.Call(&info, "test_peerInfo"); err != nil {
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t.Fatal(err)
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}
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if info.RemoteAddr == "" {
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t.Error("RemoteAddr not set")
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}
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if info.Transport != "http" {
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t.Errorf("wrong Transport %q", info.Transport)
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}
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if info.HTTP.Version != "HTTP/1.1" {
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t.Errorf("wrong HTTP.Version %q", info.HTTP.Version)
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}
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if info.HTTP.UserAgent != "ua-testing" {
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t.Errorf("wrong HTTP.UserAgent %q", info.HTTP.UserAgent)
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}
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if info.HTTP.Origin != "origin.example.com" {
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t.Errorf("wrong HTTP.Origin %q", info.HTTP.UserAgent)
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}
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}
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func TestNewContextWithHeaders(t *testing.T) {
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expectedHeaders := 0
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server := httptest.NewServer(http.HandlerFunc(func(writer http.ResponseWriter, request *http.Request) {
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for i := 0; i < expectedHeaders; i++ {
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key, want := fmt.Sprintf("key-%d", i), fmt.Sprintf("val-%d", i)
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if have := request.Header.Get(key); have != want {
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t.Errorf("wrong request headers for %s, want: %s, have: %s", key, want, have)
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}
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}
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writer.WriteHeader(http.StatusOK)
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_, _ = writer.Write([]byte(`{}`))
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}))
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defer server.Close()
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client, err := Dial(server.URL)
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if err != nil {
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t.Fatalf("failed to dial: %s", err)
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}
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defer client.Close()
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newHdr := func(k, v string) http.Header {
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header := http.Header{}
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header.Set(k, v)
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return header
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}
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ctx1 := NewContextWithHeaders(context.Background(), newHdr("key-0", "val-0"))
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ctx2 := NewContextWithHeaders(ctx1, newHdr("key-1", "val-1"))
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ctx3 := NewContextWithHeaders(ctx2, newHdr("key-2", "val-2"))
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expectedHeaders = 3
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if err := client.CallContext(ctx3, nil, "test"); err != ErrNoResult {
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t.Error("call failed", err)
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}
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expectedHeaders = 2
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if err := client.CallContext(ctx2, nil, "test"); err != ErrNoResult {
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t.Error("call failed:", err)
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}
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}
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