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package requestid
import (
"net/http"
"net/http/httptest"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func newRequest(t *testing.T) *http.Request {
t.Helper()
r, err := http.NewRequest(http.MethodGet, "https://example.com", http.NoBody)
require.NoError(t, err)
return r
}
func Test_Middleware(t *testing.T) {
requestWithID := newRequest(t)
requestWithID.Header.Set("X-Request-Id", "reqID")
requestWithoutID := newRequest(t)
requestWithEmptyHeader := newRequest(t)
requestWithEmptyHeader.Header.Set("X-Request-Id", "")
requestWithSmallstepID := newRequest(t)
requestWithSmallstepID.Header.Set("X-Smallstep-Id", "smallstepID")
tests := []struct {
name string
traceHeader string
next http.HandlerFunc
req *http.Request
}{
{
name: "default-request-id",
traceHeader: defaultTraceHeader,
next: func(w http.ResponseWriter, r *http.Request) {
assert.Empty(t, r.Header.Get("X-Smallstep-Id"))
assert.Equal(t, "reqID", r.Header.Get("X-Request-Id"))
reqID, ok := FromContext(r.Context())
if assert.True(t, ok) {
assert.Equal(t, "reqID", reqID)
}
assert.Equal(t, "reqID", w.Header().Get("X-Request-Id"))
},
req: requestWithID,
},
{
name: "no-request-id",
traceHeader: "X-Request-Id",
next: func(w http.ResponseWriter, r *http.Request) {
assert.Empty(t, r.Header.Get("X-Smallstep-Id"))
value := r.Header.Get("X-Request-Id")
assert.NotEmpty(t, value)
reqID, ok := FromContext(r.Context())
if assert.True(t, ok) {
assert.Equal(t, value, reqID)
}
assert.Equal(t, value, w.Header().Get("X-Request-Id"))
},
req: requestWithoutID,
},
{
name: "empty-header",
traceHeader: "",
next: func(w http.ResponseWriter, r *http.Request) {
assert.Empty(t, r.Header.Get("X-Request-Id"))
value := r.Header.Get("X-Smallstep-Id")
assert.NotEmpty(t, value)
reqID, ok := FromContext(r.Context())
if assert.True(t, ok) {
assert.Equal(t, value, reqID)
}
assert.Equal(t, value, w.Header().Get("X-Request-Id"))
},
req: requestWithEmptyHeader,
},
{
name: "fallback-header-name",
traceHeader: defaultTraceHeader,
next: func(w http.ResponseWriter, r *http.Request) {
assert.Empty(t, r.Header.Get("X-Request-Id"))
assert.Equal(t, "smallstepID", r.Header.Get("X-Smallstep-Id"))
reqID, ok := FromContext(r.Context())
if assert.True(t, ok) {
assert.Equal(t, "smallstepID", reqID)
}
assert.Equal(t, "smallstepID", w.Header().Get("X-Request-Id"))
},
req: requestWithSmallstepID,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
handler := New(tt.traceHeader).Middleware(tt.next)
w := httptest.NewRecorder()
handler.ServeHTTP(w, tt.req)
assert.NotEmpty(t, w.Header().Get("X-Request-Id"))
})
}
}
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