brave search implementation
This commit is contained in:
@@ -1 +1,122 @@
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package brave
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import (
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"net/http"
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"time"
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)
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const (
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BaseURL = "https://api.search.brave.com/res/v1"
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httpTimeout = 10 * time.Second
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)
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type Client struct {
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apiKey string
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baseURL string
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httpClient *http.Client
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}
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func New(apiKey, baseURL string) *Client {
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return &Client{
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apiKey: apiKey,
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baseURL: baseURL,
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httpClient: &http.Client{
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Timeout: httpTimeout,
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},
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}
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}
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type webSearchResult struct {
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Title string `json:"title"`
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URL string `json:"url"`
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Description string `json:"description"`
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}
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type webSearchResponse struct {
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Web struct {
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Results []webSearchResult `json:"results"`
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} `json:"web"`
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Summarizer struct {
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Key string `json:"key"`
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} `json:"summarizer"`
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}
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type summaryMessage struct {
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Type string `json:"type"`
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Data string `json:"data"`
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}
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type summarizerResponse struct {
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Summary []summaryMessage `json:"summary"`
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}
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func (c *Client) Search(ctx context.Context, query string) (string, error) {
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req, _ := http.NewRequestWithContext(ctx, http.MethodGet, c.baseURL+"/web/search", nil)
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req.Header.Set("Accept", "application/json")
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req.Header.Set("X-Subscription-Token", c.apiKey)
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q := req.URL.Query()
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q.Add("q", query)
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q.Add("summary", "1")
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req.URL.RawQuery = q.Encode()
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resp, err := c.httpClient.Do(req)
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if err != nil {
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return "", err
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}
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defer resp.Body.Close()
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if resp.StatusCode != http.StatusOK {
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body, _ := io.ReadAll(resp.Body)
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return "", fmt.Errorf("status %d: %s", resp.StatusCode, body)
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}
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var webResp webSearchResponse
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if err = json.NewDecoder(resp.Body).Decode(&webResp); err != nil {
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return "", err
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}
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if webResp.Summarizer.Key == "" {
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if len(webResp.Web.Results) > 0 {
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return webResp.Web.Results[0].Description, nil
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}
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return "", errors.New("no results")
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}
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req, _ = http.NewRequestWithContext(ctx, http.MethodGet, c.baseURL+"/summarizer/search", nil)
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req.Header.Set("Accept", "application/json")
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req.Header.Set("X-Subscription-Token", c.apiKey)
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q = req.URL.Query()
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q.Add("key", webResp.Summarizer.Key)
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req.URL.RawQuery = q.Encode()
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resp, err = c.httpClient.Do(req)
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if err != nil {
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return "", err
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}
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defer resp.Body.Close()
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if resp.StatusCode != http.StatusOK {
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body, _ := io.ReadAll(resp.Body)
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return "", fmt.Errorf("summarizer status %d: %s", resp.StatusCode, body)
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}
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var sumResp summarizerResponse
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if err = json.NewDecoder(resp.Body).Decode(&sumResp); err != nil {
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return "", err
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}
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for _, msg := range sumResp.Summary {
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if msg.Type == "token" {
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return msg.Data, nil
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}
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}
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return "", errors.New("no token in summary")
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}
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@@ -1 +1,209 @@
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package brave
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import (
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"context"
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"encoding/json"
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"errors"
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"io"
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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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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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type roundTripFunc func(*http.Request) (*http.Response, error)
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func (f roundTripFunc) RoundTrip(r *http.Request) (*http.Response, error) {
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return f(r)
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}
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func TestNew(t *testing.T) {
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client := New("key", "url")
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assert.Equal(t, "key", client.apiKey)
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assert.Equal(t, "url", client.baseURL)
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assert.NotNil(t, client.httpClient)
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}
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func TestSearch_Success_WithSummarizer(t *testing.T) {
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server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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switch r.URL.Path {
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case "/web/search":
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assert.Equal(t, "key", r.Header.Get("X-Subscription-Token"))
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resp := webSearchResponse{}
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resp.Summarizer.Key = "test-key"
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json.NewEncoder(w).Encode(resp)
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case "/summarizer/search":
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assert.Equal(t, "key", r.Header.Get("X-Subscription-Token"))
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assert.Equal(t, "test-key", r.URL.Query().Get("key"))
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resp := summarizerResponse{
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Summary: []summaryMessage{
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{Type: "token", Data: "summary text"},
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},
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}
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json.NewEncoder(w).Encode(resp)
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}
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}))
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defer server.Close()
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client := New("key", server.URL)
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result, err := client.Search(context.Background(), "query")
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require.NoError(t, err)
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assert.Equal(t, "summary text", result)
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}
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func TestSearch_Success_NoSummarizer_FallbackToDescription(t *testing.T) {
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server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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resp := webSearchResponse{}
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resp.Web.Results = []webSearchResult{
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{Description: "fallback description"},
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}
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json.NewEncoder(w).Encode(resp)
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}))
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defer server.Close()
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client := New("key", server.URL)
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result, err := client.Search(context.Background(), "query")
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require.NoError(t, err)
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assert.Equal(t, "fallback description", result)
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}
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func TestSearch_NoResults(t *testing.T) {
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server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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resp := webSearchResponse{}
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json.NewEncoder(w).Encode(resp)
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}))
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defer server.Close()
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client := New("key", server.URL)
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_, err := client.Search(context.Background(), "query")
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assert.Error(t, err)
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assert.Contains(t, err.Error(), "no results")
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}
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func TestSearch_HTTPError_WebSearch(t *testing.T) {
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server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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w.WriteHeader(http.StatusInternalServerError)
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}))
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defer server.Close()
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client := New("key", server.URL)
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_, err := client.Search(context.Background(), "query")
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assert.Error(t, err)
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assert.Contains(t, err.Error(), "status 500")
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}
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func TestSearch_InvalidJSON_WebSearch(t *testing.T) {
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server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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w.Write([]byte("not json"))
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}))
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defer server.Close()
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client := New("key", server.URL)
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_, err := client.Search(context.Background(), "query")
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assert.Error(t, err)
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}
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func TestSearch_HTTPError_Summarizer(t *testing.T) {
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server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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if r.URL.Path == "/web/search" {
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resp := webSearchResponse{}
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resp.Summarizer.Key = "test-key"
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json.NewEncoder(w).Encode(resp)
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} else {
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w.WriteHeader(http.StatusInternalServerError)
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}
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}))
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defer server.Close()
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client := New("key", server.URL)
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_, err := client.Search(context.Background(), "query")
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assert.Error(t, err)
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assert.Contains(t, err.Error(), "summarizer status 500")
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}
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func TestSearch_InvalidJSON_Summarizer(t *testing.T) {
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server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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if r.URL.Path == "/web/search" {
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resp := webSearchResponse{}
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resp.Summarizer.Key = "test-key"
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json.NewEncoder(w).Encode(resp)
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} else {
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w.Write([]byte("not json"))
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}
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}))
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defer server.Close()
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client := New("key", server.URL)
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_, err := client.Search(context.Background(), "query")
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assert.Error(t, err)
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}
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func TestSearch_NoTokenInSummary(t *testing.T) {
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server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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if r.URL.Path == "/web/search" {
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resp := webSearchResponse{}
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resp.Summarizer.Key = "test-key"
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json.NewEncoder(w).Encode(resp)
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} else {
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resp := summarizerResponse{
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Summary: []summaryMessage{
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{Type: "enum_start", Data: "ol"},
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},
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}
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json.NewEncoder(w).Encode(resp)
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}
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}))
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defer server.Close()
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client := New("key", server.URL)
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_, err := client.Search(context.Background(), "query")
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assert.Error(t, err)
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assert.Contains(t, err.Error(), "no token in summary")
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}
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func TestSearch_DoError_WebSearch(t *testing.T) {
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client := New("key", "http://example.com")
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client.httpClient.Transport = roundTripFunc(func(r *http.Request) (*http.Response, error) {
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if r.URL.Path == "/web/search" {
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return nil, errors.New("web search network error")
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}
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t.Fatalf("unexpected call to %s", r.URL.Path)
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return nil, nil
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})
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_, err := client.Search(context.Background(), "query")
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require.Error(t, err)
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assert.Contains(t, err.Error(), "web search network error")
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}
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func TestSearch_DoError_Summarizer(t *testing.T) {
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client := New("key", "http://example.com")
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client.httpClient.Transport = roundTripFunc(func(r *http.Request) (*http.Response, error) {
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switch r.URL.Path {
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case "/web/search":
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// successful first response
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body := `{"summarizer":{"key":"test-key"}}`
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return &http.Response{
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StatusCode: http.StatusOK,
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Body: io.NopCloser(strings.NewReader(body)),
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Header: make(http.Header),
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}, nil
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case "/summarizer/search":
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// 💥 fail only here
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return nil, errors.New("summarizer network error")
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}
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t.Fatalf("unexpected path %s", r.URL.Path)
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return nil, nil
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})
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_, err := client.Search(context.Background(), "query")
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require.Error(t, err)
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assert.Contains(t, err.Error(), "summarizer network error")
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}
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