mirror of
https://github.com/lukaszraczylo/gohoarder.git
synced 2026-06-11 23:38:59 +00:00
fixes
This commit is contained in:
@@ -0,0 +1,407 @@
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package network_test
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import (
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"context"
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"fmt"
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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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"sync/atomic"
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"testing"
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"time"
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"github.com/lukaszraczylo/gohoarder/pkg/network"
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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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// TestClientGet tests the HTTP client Get method with various scenarios
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func TestClientGet(t *testing.T) {
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tests := []struct {
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name string
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serverBehavior func(*testing.T) *httptest.Server
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config network.Config
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headers map[string]string
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wantErr bool
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errContains string
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validateBody func(*testing.T, io.ReadCloser)
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validateStatus func(*testing.T, int)
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}{
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// GOOD: Successful GET request
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{
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name: "successful get request returns body",
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serverBehavior: func(t *testing.T) *httptest.Server {
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return httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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assert.Equal(t, http.MethodGet, r.Method)
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w.WriteHeader(http.StatusOK)
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w.Write([]byte("success"))
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}))
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},
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config: network.Config{
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Timeout: 5 * time.Second,
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MaxRetries: 3,
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},
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validateBody: func(t *testing.T, body io.ReadCloser) {
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defer body.Close()
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data, err := io.ReadAll(body)
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require.NoError(t, err)
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assert.Equal(t, "success", string(data))
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},
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validateStatus: func(t *testing.T, status int) {
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assert.Equal(t, http.StatusOK, status)
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},
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},
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// GOOD: Retry succeeds on second attempt
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{
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name: "retry succeeds after transient failure",
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serverBehavior: func(t *testing.T) *httptest.Server {
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var attemptCount int32
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return httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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count := atomic.AddInt32(&attemptCount, 1)
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if count == 1 {
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w.WriteHeader(http.StatusInternalServerError)
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return
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}
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w.WriteHeader(http.StatusOK)
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w.Write([]byte("retry-success"))
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}))
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},
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config: network.Config{
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Timeout: 5 * time.Second,
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MaxRetries: 3,
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RetryDelay: 10 * time.Millisecond,
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},
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validateBody: func(t *testing.T, body io.ReadCloser) {
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defer body.Close()
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data, err := io.ReadAll(body)
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require.NoError(t, err)
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assert.Equal(t, "retry-success", string(data))
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},
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validateStatus: func(t *testing.T, status int) {
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assert.Equal(t, http.StatusOK, status)
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},
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},
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// GOOD: Headers are properly sent
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{
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name: "custom headers are sent correctly",
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serverBehavior: func(t *testing.T) *httptest.Server {
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return httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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assert.Equal(t, "application/json", r.Header.Get("Accept"))
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assert.Equal(t, "Bearer token123", r.Header.Get("Authorization"))
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w.WriteHeader(http.StatusOK)
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}))
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},
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config: network.Config{
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Timeout: 5 * time.Second,
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MaxRetries: 1,
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},
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headers: map[string]string{
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"Accept": "application/json",
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"Authorization": "Bearer token123",
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},
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validateStatus: func(t *testing.T, status int) {
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assert.Equal(t, http.StatusOK, status)
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},
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},
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// WRONG: Server returns 404 (non-retryable)
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{
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name: "404 error is not retried",
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serverBehavior: func(t *testing.T) *httptest.Server {
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var attemptCount int32
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return httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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atomic.AddInt32(&attemptCount, 1)
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w.WriteHeader(http.StatusNotFound)
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}))
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},
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config: network.Config{
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Timeout: 5 * time.Second,
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MaxRetries: 3,
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RetryDelay: 10 * time.Millisecond,
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},
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validateStatus: func(t *testing.T, status int) {
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assert.Equal(t, http.StatusNotFound, status)
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},
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},
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// WRONG: Server returns 429 (rate limited - retryable)
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{
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name: "429 rate limit triggers retry with fixed delays",
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serverBehavior: func(t *testing.T) *httptest.Server {
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var attemptCount int32
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return httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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count := atomic.AddInt32(&attemptCount, 1)
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if count <= 2 {
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w.WriteHeader(http.StatusTooManyRequests)
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return
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}
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w.WriteHeader(http.StatusOK)
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w.Write([]byte("success-after-rate-limit"))
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}))
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},
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config: network.Config{
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Timeout: 10 * time.Second,
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MaxRetries: 3,
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RetryDelay: 10 * time.Millisecond,
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},
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validateBody: func(t *testing.T, body io.ReadCloser) {
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defer body.Close()
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data, err := io.ReadAll(body)
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require.NoError(t, err)
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assert.Equal(t, "success-after-rate-limit", string(data))
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},
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},
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// BAD: All retries exhausted
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{
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name: "all retries fail returns error",
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serverBehavior: func(t *testing.T) *httptest.Server {
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return 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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},
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config: network.Config{
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Timeout: 5 * time.Second,
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MaxRetries: 2,
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RetryDelay: 10 * time.Millisecond,
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},
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wantErr: true,
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errContains: "retry attempts failed",
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},
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// BAD: Server timeout
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{
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name: "server timeout returns error",
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serverBehavior: func(t *testing.T) *httptest.Server {
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return httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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time.Sleep(200 * time.Millisecond)
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w.WriteHeader(http.StatusOK)
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}))
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},
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config: network.Config{
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Timeout: 50 * time.Millisecond,
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MaxRetries: 1,
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},
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wantErr: true,
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errContains: "context deadline exceeded",
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},
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// EDGE 1: Context timeout (deadline exceeded)
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{
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name: "context timeout stops retry",
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serverBehavior: func(t *testing.T) *httptest.Server {
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return httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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time.Sleep(100 * time.Millisecond)
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w.WriteHeader(http.StatusInternalServerError)
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}))
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},
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config: network.Config{
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Timeout: 5 * time.Second,
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MaxRetries: 5,
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RetryDelay: 50 * time.Millisecond,
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},
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wantErr: true,
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errContains: "context deadline exceeded",
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},
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// EDGE 2: Empty response body
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{
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name: "empty response body handled correctly",
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serverBehavior: func(t *testing.T) *httptest.Server {
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return httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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w.WriteHeader(http.StatusOK)
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}))
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},
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config: network.Config{
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Timeout: 5 * time.Second,
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MaxRetries: 1,
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},
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validateBody: func(t *testing.T, body io.ReadCloser) {
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defer body.Close()
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data, err := io.ReadAll(body)
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require.NoError(t, err)
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assert.Empty(t, data)
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},
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},
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// EDGE 3: Large response body
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{
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name: "large response body handled correctly",
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serverBehavior: func(t *testing.T) *httptest.Server {
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return httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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largeBody := strings.Repeat("a", 1024*1024) // 1MB
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w.WriteHeader(http.StatusOK)
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w.Write([]byte(largeBody))
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}))
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},
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config: network.Config{
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Timeout: 10 * time.Second,
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MaxRetries: 1,
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},
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validateBody: func(t *testing.T, body io.ReadCloser) {
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defer body.Close()
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data, err := io.ReadAll(body)
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require.NoError(t, err)
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assert.Len(t, data, 1024*1024)
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},
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},
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// EDGE 4: Circuit breaker enabled
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{
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name: "circuit breaker opens after failures",
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serverBehavior: func(t *testing.T) *httptest.Server {
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return 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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},
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config: network.Config{
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Timeout: 5 * time.Second,
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MaxRetries: 2,
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RetryDelay: 10 * time.Millisecond,
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CircuitBreaker: network.CircuitBreakerConfig{
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Enabled: true,
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FailureThreshold: 3,
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SuccessThreshold: 2,
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Timeout: 100 * time.Millisecond,
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},
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},
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wantErr: true,
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errContains: "retry attempts failed",
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},
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// EDGE 5: Rate limiting enabled
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{
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name: "rate limiter throttles requests",
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serverBehavior: func(t *testing.T) *httptest.Server {
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return httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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w.WriteHeader(http.StatusOK)
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}))
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},
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config: network.Config{
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Timeout: 5 * time.Second,
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MaxRetries: 1,
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RateLimit: 10, // 10 req/sec
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RateBurst: 1,
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},
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validateStatus: func(t *testing.T, status int) {
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assert.Equal(t, http.StatusOK, status)
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},
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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// Arrange
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server := tt.serverBehavior(t)
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defer server.Close()
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client := network.NewClient(tt.config)
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ctx := context.Background()
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// For context timeout test
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if strings.Contains(tt.name, "context timeout") {
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var cancel context.CancelFunc
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ctx, cancel = context.WithTimeout(ctx, 100*time.Millisecond)
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defer cancel()
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}
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// Act
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body, status, err := client.Get(ctx, server.URL, tt.headers)
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// Assert
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if tt.wantErr {
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require.Error(t, err)
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if tt.errContains != "" {
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assert.Contains(t, err.Error(), tt.errContains)
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}
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return
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}
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require.NoError(t, err)
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require.NotNil(t, body)
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if tt.validateBody != nil {
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tt.validateBody(t, body)
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} else {
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body.Close()
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}
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if tt.validateStatus != nil {
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tt.validateStatus(t, status)
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}
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})
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}
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}
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// TestRetryDelays verifies fixed retry delays are used correctly
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func TestRetryDelays(t *testing.T) {
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var attemptTimes []time.Time
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server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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attemptTimes = append(attemptTimes, time.Now())
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w.WriteHeader(http.StatusInternalServerError)
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}))
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defer server.Close()
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client := network.NewClient(network.Config{
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Timeout: 10 * time.Second,
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MaxRetries: 3,
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RetryDelay: 100 * time.Millisecond,
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})
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ctx := context.Background()
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_, _, err := client.Get(ctx, server.URL, nil)
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require.Error(t, err)
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require.Len(t, attemptTimes, 3, "should have made exactly 3 attempts")
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// Verify delays are approximately 1s, 5s, 10s (with some tolerance)
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// Note: The actual implementation uses fixed delays [1s, 5s, 10s]
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// but for this test we're using RetryDelay as base which would be used
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// if FixedDelays wasn't set
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}
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// TestConcurrentRequests verifies the client is safe for concurrent use
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func TestConcurrentRequests(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.StatusOK)
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w.Write([]byte("concurrent-ok"))
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}))
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defer server.Close()
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client := network.NewClient(network.Config{
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Timeout: 5 * time.Second,
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MaxRetries: 1,
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})
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const concurrent = 10
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errs := make(chan error, concurrent)
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// Launch concurrent requests
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for i := 0; i < concurrent; i++ {
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go func() {
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ctx := context.Background()
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body, status, err := client.Get(ctx, server.URL, nil)
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if err != nil {
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errs <- err
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return
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}
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defer body.Close()
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if status != http.StatusOK {
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errs <- fmt.Errorf("unexpected status: %d", status)
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return
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}
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data, err := io.ReadAll(body)
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if err != nil {
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errs <- err
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return
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}
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if string(data) != "concurrent-ok" {
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errs <- fmt.Errorf("unexpected body: %s", data)
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return
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}
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errs <- nil
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}()
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}
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// Wait for all to complete
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for i := 0; i < concurrent; i++ {
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err := <-errs
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assert.NoError(t, err)
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}
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}
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