mirror of https://github.com/coder/coder.git
134 lines
2.9 KiB
Go
134 lines
2.9 KiB
Go
package tracing_test
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import (
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"bufio"
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"crypto/rand"
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"net"
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"net/http"
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"net/http/httptest"
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"testing"
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"github.com/stretchr/testify/require"
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"golang.org/x/xerrors"
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"github.com/coder/coder/v2/coderd/tracing"
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)
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func TestStatusWriter(t *testing.T) {
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t.Parallel()
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t.Run("WriteHeader", func(t *testing.T) {
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t.Parallel()
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var (
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rec = httptest.NewRecorder()
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w = &tracing.StatusWriter{ResponseWriter: rec}
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)
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w.WriteHeader(http.StatusOK)
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require.Equal(t, http.StatusOK, w.Status)
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// Validate that the code is written to the underlying Response.
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require.Equal(t, http.StatusOK, rec.Code)
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})
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t.Run("WriteHeaderTwice", func(t *testing.T) {
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t.Parallel()
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var (
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rec = httptest.NewRecorder()
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w = &tracing.StatusWriter{ResponseWriter: rec}
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code = http.StatusNotFound
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)
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w.WriteHeader(code)
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w.WriteHeader(http.StatusOK)
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// Validate that we only record the first status code.
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require.Equal(t, code, w.Status)
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// Validate that the code is written to the underlying Response.
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require.Equal(t, code, rec.Code)
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})
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t.Run("WriteNoHeader", func(t *testing.T) {
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t.Parallel()
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var (
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rec = httptest.NewRecorder()
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w = &tracing.StatusWriter{ResponseWriter: rec}
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body = []byte("hello")
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)
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_, err := w.Write(body)
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require.NoError(t, err)
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// Should set the status to OK.
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require.Equal(t, http.StatusOK, w.Status)
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// We don't record the body for codes <400.
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require.Equal(t, []byte(nil), w.ResponseBody())
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require.Equal(t, body, rec.Body.Bytes())
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})
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t.Run("WriteAfterHeader", func(t *testing.T) {
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t.Parallel()
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var (
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rec = httptest.NewRecorder()
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w = &tracing.StatusWriter{ResponseWriter: rec}
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body = []byte("hello")
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code = http.StatusInternalServerError
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)
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w.WriteHeader(code)
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_, err := w.Write(body)
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require.NoError(t, err)
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require.Equal(t, code, w.Status)
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require.Equal(t, body, w.ResponseBody())
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require.Equal(t, body, rec.Body.Bytes())
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})
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t.Run("WriteMaxBody", func(t *testing.T) {
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t.Parallel()
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var (
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rec = httptest.NewRecorder()
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w = &tracing.StatusWriter{ResponseWriter: rec}
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// 8kb body.
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body = make([]byte, 8<<10)
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code = http.StatusInternalServerError
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)
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_, err := rand.Read(body)
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require.NoError(t, err)
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w.WriteHeader(code)
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_, err = w.Write(body)
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require.NoError(t, err)
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require.Equal(t, code, w.Status)
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require.Equal(t, body, rec.Body.Bytes())
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require.Equal(t, body[:4096], w.ResponseBody())
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})
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t.Run("Hijack", func(t *testing.T) {
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t.Parallel()
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rec := httptest.NewRecorder()
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w := &tracing.StatusWriter{ResponseWriter: hijacker{rec}}
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_, _, err := w.Hijack()
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require.Error(t, err)
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require.Equal(t, "hijacked", err.Error())
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})
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}
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type hijacker struct {
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http.ResponseWriter
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}
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func (hijacker) Hijack() (net.Conn, *bufio.ReadWriter, error) {
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return nil, nil, xerrors.New("hijacked")
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}
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func (h hijacker) Flush() {
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if f, ok := h.ResponseWriter.(http.Flusher); ok {
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f.Flush()
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}
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}
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