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retry_policy_test.go
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package prepalert_test
import (
"net/http"
"net/http/httptest"
"strconv"
"testing"
"github.com/mashiike/canyon"
"github.com/mashiike/prepalert"
"github.com/stretchr/testify/require"
)
func TestRetryPolicySetRetryAfter__Nil(t *testing.T) {
t.Parallel()
var rp *prepalert.RetryPolicy
w := httptest.NewRecorder()
r := httptest.NewRequest(http.MethodGet, "/", nil)
rp.SetRetryAfter(w, r)
require.Equal(t, "", w.Header().Get("Retry-After"))
}
func TestRetryPolicySetRetryAfter__IntervalLessThanZero(t *testing.T) {
t.Parallel()
rp := &prepalert.RetryPolicy{
Interval: -1,
}
w := httptest.NewRecorder()
r := httptest.NewRequest(http.MethodGet, "/", nil)
rp.SetRetryAfter(w, r)
require.Equal(t, "", w.Header().Get("Retry-After"))
}
func TestRetryPolicySetRetryAfter__First(t *testing.T) {
t.Parallel()
rp := &prepalert.RetryPolicy{
Interval: 5,
MaxInterval: 300,
BackoffFactor: 2,
Jitter: 0,
}
w := httptest.NewRecorder()
r := httptest.NewRequest(http.MethodGet, "/", nil)
r.Header.Set(canyon.HeaderSQSAttribute("ApproximateReceiveCount"), "1")
rp.SetRetryAfter(w, r)
require.Equal(t, "5", w.Header().Get("Retry-After"))
}
func TestRetryPolicySetRetryAfter__Second(t *testing.T) {
t.Parallel()
rp := &prepalert.RetryPolicy{
Interval: 5,
MaxInterval: 300,
BackoffFactor: 2,
Jitter: 0,
}
w := httptest.NewRecorder()
r := httptest.NewRequest(http.MethodGet, "/", nil)
r.Header.Set(canyon.HeaderSQSAttribute("ApproximateReceiveCount"), "2")
rp.SetRetryAfter(w, r)
require.Equal(t, "10", w.Header().Get("Retry-After"))
}
func TestRetryPolicySetRetryAfter__Third(t *testing.T) {
t.Parallel()
rp := &prepalert.RetryPolicy{
Interval: 5,
MaxInterval: 300,
BackoffFactor: 2,
Jitter: 0,
}
w := httptest.NewRecorder()
r := httptest.NewRequest(http.MethodGet, "/", nil)
r.Header.Set(canyon.HeaderSQSAttribute("ApproximateReceiveCount"), "3")
rp.SetRetryAfter(w, r)
require.Equal(t, "20", w.Header().Get("Retry-After"))
}
func TestRetryPolicySetRetryAfter__MaxInterval(t *testing.T) {
t.Parallel()
rp := &prepalert.RetryPolicy{
Interval: 5,
MaxInterval: 300,
BackoffFactor: 2,
Jitter: 0,
}
w := httptest.NewRecorder()
r := httptest.NewRequest(http.MethodGet, "/", nil)
r.Header.Set(canyon.HeaderSQSAttribute("ApproximateReceiveCount"), "100")
rp.SetRetryAfter(w, r)
require.Equal(t, "300", w.Header().Get("Retry-After"))
}
func TestRetryPolicySetRetryAfter__FirstWithJittr(t *testing.T) {
t.Parallel()
rp := &prepalert.RetryPolicy{
Interval: 5,
MaxInterval: 300,
BackoffFactor: 2,
Jitter: 15,
}
w := httptest.NewRecorder()
r := httptest.NewRequest(http.MethodGet, "/", nil)
r.Header.Set(canyon.HeaderSQSAttribute("ApproximateReceiveCount"), "1")
rp.SetRetryAfter(w, r)
retryAfter, err := strconv.Atoi(w.Header().Get("Retry-After"))
require.NoError(t, err)
t.Log("Retry-After:", retryAfter)
require.GreaterOrEqual(t, retryAfter, 5)
require.LessOrEqual(t, retryAfter, 20)
}
func TestRetryPolicySetRetryAfter__MaxIntervalWithJittr(t *testing.T) {
t.Parallel()
rp := &prepalert.RetryPolicy{
Interval: 5,
MaxInterval: 300,
BackoffFactor: 2,
Jitter: 15,
}
w := httptest.NewRecorder()
r := httptest.NewRequest(http.MethodGet, "/", nil)
r.Header.Set(canyon.HeaderSQSAttribute("ApproximateReceiveCount"), "100")
rp.SetRetryAfter(w, r)
retryAfter, err := strconv.Atoi(w.Header().Get("Retry-After"))
require.NoError(t, err)
t.Log("Retry-After:", retryAfter)
require.GreaterOrEqual(t, retryAfter, 285)
require.LessOrEqual(t, retryAfter, 300)
}