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simplexcalc/internal/api/messages_test.go
T
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HTTP API: a chat's recent messages, and sending a message (closes #5)
`GET /api/v1/chats/{id}/messages?count=N` returns a chat's recent messages, oldest first (`count` 1 to 100, default 20), and `POST` to the same path sends a text message and returns it once the chat client has taken it. Both answer `404` for any id the chats list does not show, looked up in the same contact list. The message record is defined once, for the webhooks to reuse.

Disclosures: items are read five at a time, because one item can be many times its text and 100 at once could pass the 16 MiB read limit; text too long gets `413`, a contact who deleted the chat `409` (unverified for one still connecting); a query the server cannot read gets its own `400`.

Model: opus-5-5
2026-09-29 07:33:36 +02:00

368 lines
12 KiB
Go

package api_test
import (
"encoding/json"
"net/http"
"net/http/httptest"
"strings"
"testing"
"sneak.berlin/go/simplexcalc/internal/simplex"
)
// Answers more than one test expects.
const (
noSuchChat = `{"error":"no such chat"}` + "\n"
badCount = `{"error":"count must be a whole number from 1 to 100"}` + "\n"
notJSON = `{"error":"the body must be JSON such as {\"text\":\"hello\"}"}` + "\n"
)
// oneChat returns the bot's contacts in these tests: one, whose chat is
// the one messagesPath names.
func oneChat() []simplex.Contact {
return []simplex.Contact{{ContactID: 3, Status: "active"}}
}
// chatItem is a chat item decoded from a record shaped as the chat
// client sends it, reduced to the fields the API reads.
func chatItem(t *testing.T, record string) simplex.ChatItem {
t.Helper()
var item simplex.ChatItem
err := json.Unmarshal([]byte(record), &item)
if err != nil {
t.Fatalf("decoding %s: %v", record, err)
}
return item
}
// post sends srv a POST of body to path, with the credential.
func post(
t *testing.T, srv *http.Server, path, body string,
) *httptest.ResponseRecorder {
t.Helper()
req := httptest.NewRequestWithContext(t.Context(), http.MethodPost, path,
strings.NewReader(body))
req.Header.Set("Authorization", bearer)
rec := httptest.NewRecorder()
srv.Handler.ServeHTTP(rec, req)
return rec
}
// TestMessages: the messages among the chat's last 20 items come back
// oldest first, without the events the chat client records in a chat,
// and the chat client is asked with a deadline.
func TestMessages(t *testing.T) {
t.Parallel()
client := &fakeClient{contacts: oneChat(), items: []simplex.ChatItem{
chatItem(t, `{"meta":{"itemId":7,"itemTs":"2026-09-29T03:13:46.521359978Z"},
"content":{"type":"rcvChatFeature","feature":"calls"}}`),
chatItem(t, `{"meta":{"itemId":9,"itemTs":"2026-09-29T03:14:34Z"},
"content":{"type":"rcvMsgContent",
"msgContent":{"type":"text","text":"2 + 2"}}}`),
chatItem(t, `{"meta":{"itemId":10,"itemTs":"2026-09-29T03:14:35.101Z"},
"content":{"type":"sndMsgContent","msgContent":{"type":"text","text":"4"}}}`),
chatItem(t, `{"meta":{"itemId":11,"itemTs":"2026-09-29T03:15:02Z"},
"content":{"type":"rcvMsgContent","msgContent":{"type":"image",
"text":"a picture","image":"data:image/jpg;base64,/9j/4AAQ"}}}`),
}}
rec := request(t, newAPI(credential, client), http.MethodGet, messagesPath, bearer)
want := `{"messages":[` +
`{"id":9,"direction":"received","type":"text","text":"2 + 2",` +
`"time":"2026-09-29T03:14:34Z"},` +
`{"id":10,"direction":"sent","type":"text","text":"4",` +
`"time":"2026-09-29T03:14:35.101Z"},` +
`{"id":11,"direction":"received","type":"image","text":"a picture",` +
`"time":"2026-09-29T03:15:02Z"}]}` + "\n"
if rec.Code != http.StatusOK || rec.Body.String() != want {
t.Errorf("response = %d %q, want 200 %q", rec.Code, rec.Body.String(), want)
}
if client.contactID != 3 || client.count != 20 || !client.hadDeadline {
t.Errorf("the chat client was asked for %d items of chat %d, deadline %v; "+
"want 20 of chat 3 with a deadline",
client.count, client.contactID, client.hadDeadline)
}
}
// TestNoMessages: a chat without messages is an empty list, not null.
func TestNoMessages(t *testing.T) {
t.Parallel()
rec := request(t, newAPI(credential, &fakeClient{contacts: oneChat()}),
http.MethodGet, messagesPath, bearer)
want := `{"messages":[]}` + "\n"
if rec.Code != http.StatusOK || rec.Body.String() != want {
t.Errorf("response = %d %q, want 200 %q", rec.Code, rec.Body.String(), want)
}
}
// TestMessagesCount: count is a whole number from 1 to 100, and 20 when
// absent. Anything else is refused before the chat's items are read.
func TestMessagesCount(t *testing.T) {
t.Parallel()
// The number of items the chat client is asked for; 0 for refused.
for query, want := range map[string]int{
"": 20,
"?count=1": 1,
"?count=100": 100,
"?count=%35": 5,
"?count=0": 0,
"?count=101": 0,
"?count=-1": 0,
"?count=2.5": 0,
"?count=ten": 0,
"?count=": 0,
} {
t.Run(query, func(t *testing.T) {
t.Parallel()
client := &fakeClient{contacts: oneChat()}
rec := request(t, newAPI(credential, client),
http.MethodGet, messagesPath+query, bearer)
if want == 0 {
if rec.Code != http.StatusBadRequest || rec.Body.String() != badCount ||
client.count != 0 {
t.Errorf("response = %d %q, asked for %d items; "+
"want 400 %q and nothing asked", rec.Code, rec.Body.String(),
client.count, badCount)
}
return
}
if rec.Code != http.StatusOK || client.count != want {
t.Errorf("response = %d, asked for %d items; want 200 and %d",
rec.Code, client.count, want)
}
})
}
}
// TestMessagesUnreadableQuery: a query that cannot be decoded is refused
// with a sentence that says so, whether or not the bad part is count.
// The last query has 10,001 parts, more than Go's url.ParseQuery takes.
func TestMessagesUnreadableQuery(t *testing.T) {
t.Parallel()
want := `{"error":"the query cannot be read"}` + "\n"
for _, query := range []string{
"?count=1%", "?count=5&x=%zz", "?x=%zz", "?count=5;x=1",
"?count=5" + strings.Repeat("&", 10000),
} {
client := &fakeClient{contacts: oneChat()}
rec := request(t, newAPI(credential, client),
http.MethodGet, messagesPath+query, bearer)
if rec.Code != http.StatusBadRequest || rec.Body.String() != want ||
client.count != 0 {
t.Errorf("%s: response = %d %q, asked for %d items; "+
"want 400 %q and nothing asked",
query, rec.Code, rec.Body.String(), client.count, want)
}
}
}
// TestNoSuchChat: an id that GET /api/v1/chats does not list gets 404,
// whether reading messages or sending one, and nothing is read or sent.
// That includes 1 and 2, contact records the chat client keeps on a new
// profile and would read or send in. A contact the chat client no
// longer has when asked also gets 404.
func TestNoSuchChat(t *testing.T) {
t.Parallel()
for _, id := range []string{
"1", "2", "4", "tester", "0", "-3", "3.5", "99999999999999999999",
} {
client := &fakeClient{contacts: oneChat()}
srv := newAPI(credential, client)
path := "/api/v1/chats/" + id + "/messages"
for _, rec := range []*httptest.ResponseRecorder{
request(t, srv, http.MethodGet, path, bearer),
post(t, srv, path, `{"text":"hello"}`),
} {
if rec.Code != http.StatusNotFound || rec.Body.String() != noSuchChat {
t.Errorf("chat %q: response = %d %q, want 404 %q",
id, rec.Code, rec.Body.String(), noSuchChat)
}
}
if client.contactID != 0 {
t.Errorf("chat %q: the chat was read or sent to", id)
}
}
srv := newAPI(credential, &fakeClient{contacts: oneChat(), err: simplex.ErrNoContact})
for _, rec := range []*httptest.ResponseRecorder{
request(t, srv, http.MethodGet, messagesPath, bearer),
post(t, srv, messagesPath, `{"text":"hello"}`),
} {
if rec.Code != http.StatusNotFound || rec.Body.String() != noSuchChat {
t.Errorf("no contact: response = %d %q, want 404 %q",
rec.Code, rec.Body.String(), noSuchChat)
}
}
}
// TestChatLookupFailure: when the chats cannot be read to look the id
// up, the answer is 500 and nothing is read or sent.
func TestChatLookupFailure(t *testing.T) {
t.Parallel()
client := &fakeClient{contactsErr: errChat}
srv := newAPI(credential, client)
want := `{"error":"the chats could not be read"}` + "\n"
for _, rec := range []*httptest.ResponseRecorder{
request(t, srv, http.MethodGet, messagesPath, bearer),
post(t, srv, messagesPath, `{"text":"hello"}`),
} {
if rec.Code != http.StatusInternalServerError || rec.Body.String() != want {
t.Errorf("response = %d %q, want 500 %q", rec.Code, rec.Body.String(), want)
}
}
if client.contactID != 0 {
t.Error("the chat was read or sent to")
}
}
// TestMessagesFailure: when the chat client fails, the answer says so in
// a chosen sentence, never in the error's own text.
func TestMessagesFailure(t *testing.T) {
t.Parallel()
rec := request(t, newAPI(credential, &fakeClient{contacts: oneChat(), err: errChat}),
http.MethodGet, messagesPath, bearer)
want := `{"error":"the messages could not be read"}` + "\n"
if rec.Code != http.StatusInternalServerError || rec.Body.String() != want {
t.Errorf("response = %d %q, want 500 %q", rec.Code, rec.Body.String(), want)
}
}
// TestSend: the text goes to the chat's contact, with a deadline, and
// the answer is 201 with the message as sent.
func TestSend(t *testing.T) {
t.Parallel()
client := &fakeClient{contacts: oneChat(), sent: chatItem(t, `{"meta":{"itemId":12,
"itemTs":"2026-09-29T03:14:43.519552587Z"},"content":{"type":"sndMsgContent",
"msgContent":{"type":"text","text":"hello"}}}`)}
rec := post(t, newAPI(credential, client), messagesPath, `{"text":"hello"}`)
want := `{"message":{"id":12,"direction":"sent","type":"text","text":"hello",` +
`"time":"2026-09-29T03:14:43.519552587Z"}}` + "\n"
if rec.Code != http.StatusCreated || rec.Body.String() != want {
t.Errorf("response = %d %q, want 201 %q", rec.Code, rec.Body.String(), want)
}
if client.contactID != 3 || client.text != "hello" || !client.hadDeadline {
t.Errorf("the chat client was asked to send %q to chat %d, deadline %v; "+
`want "hello" to chat 3 with a deadline`,
client.text, client.contactID, client.hadDeadline)
}
}
// TestSendBadBody: a body that is not JSON with a text, or that is over
// 64 KiB, is refused before anything is sent.
func TestSendBadBody(t *testing.T) {
t.Parallel()
textEmpty := `{"error":"text is empty"}` + "\n"
tooLarge := `{"error":"the body is too large"}` + "\n"
for name, tc := range map[string]struct {
body string
status int
answer string
}{
"empty": {"", http.StatusBadRequest, notJSON},
"not JSON": {"hello", http.StatusBadRequest, notJSON},
"not an object": {`["hello"]`, http.StatusBadRequest, notJSON},
"text not a string": {`{"text":5}`, http.StatusBadRequest, notJSON},
"more after it": {`{"text":"hello"} {}`, http.StatusBadRequest, notJSON},
"no text": {`{}`, http.StatusBadRequest, textEmpty},
"empty text": {`{"text":""}`, http.StatusBadRequest, textEmpty},
"over 64 KiB": {
`{"text":"` + strings.Repeat("a", 64<<10) + `"}`,
http.StatusRequestEntityTooLarge, tooLarge,
},
} {
t.Run(name, func(t *testing.T) {
t.Parallel()
client := &fakeClient{contacts: oneChat()}
rec := post(t, newAPI(credential, client), messagesPath, tc.body)
if rec.Code != tc.status || rec.Body.String() != tc.answer {
t.Errorf("response = %d %q, want %d %q",
rec.Code, rec.Body.String(), tc.status, tc.answer)
}
if client.contactID != 0 {
t.Error("the chat client was asked to send")
}
})
}
}
// TestSendRefused: a send the chat client refuses, or answers with no
// message, gets an answer chosen for the reason, never the chat
// client's own words.
func TestSendRefused(t *testing.T) {
t.Parallel()
for name, tc := range map[string]struct {
client *fakeClient
status int
answer string
}{
"contact deleted": {
&fakeClient{contacts: oneChat(), err: simplex.ErrContactNotReady},
http.StatusConflict, `{"error":"the contact cannot receive messages"}`,
},
"text too long": {
&fakeClient{contacts: oneChat(), err: simplex.ErrMessageTooLarge},
http.StatusRequestEntityTooLarge, `{"error":"the text is too long"}`,
},
"anything else": {
&fakeClient{contacts: oneChat(), err: errChat},
http.StatusInternalServerError, `{"error":"the message could not be sent"}`,
},
"no message in the answer": {
&fakeClient{contacts: oneChat(), sent: chatItem(t, `{"meta":{"itemId":13},
"content":{"type":"sndDirectEvent"}}`)},
http.StatusInternalServerError,
`{"error":"the chat client's answer could not be read"}`,
},
} {
t.Run(name, func(t *testing.T) {
t.Parallel()
rec := post(t, newAPI(credential, tc.client), messagesPath, `{"text":"hello"}`)
if rec.Code != tc.status || rec.Body.String() != tc.answer+"\n" {
t.Errorf("response = %d %q, want %d %q",
rec.Code, rec.Body.String(), tc.status, tc.answer)
}
})
}
}