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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package test
import (
"context"
"net/http"
"net/http/httptest"
"net/url"
"strings"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp"
"go.opentelemetry.io/otel/sdk/trace"
"go.opentelemetry.io/otel/sdk/trace/tracetest"
)
func TestConvenienceWrappers(t *testing.T) {
sr := tracetest.NewSpanRecorder()
provider := trace.NewTracerProvider(trace.WithSpanProcessor(sr))
orig := otelhttp.DefaultClient
otelhttp.DefaultClient = &http.Client{
Transport: otelhttp.NewTransport(
http.DefaultTransport,
otelhttp.WithTracerProvider(provider),
),
}
defer func() { otelhttp.DefaultClient = orig }()
content := []byte("Hello, world!")
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if _, err := w.Write(content); err != nil {
t.Fatal(err)
}
}))
defer ts.Close()
ctx := context.Background()
res, err := otelhttp.Get(ctx, ts.URL)
if err != nil {
t.Fatal(err)
}
res.Body.Close()
res, err = otelhttp.Head(ctx, ts.URL)
if err != nil {
t.Fatal(err)
}
res.Body.Close()
res, err = otelhttp.Post(ctx, ts.URL, "text/plain", strings.NewReader("test"))
if err != nil {
t.Fatal(err)
}
res.Body.Close()
form := make(url.Values)
form.Set("foo", "bar")
res, err = otelhttp.PostForm(ctx, ts.URL, form)
if err != nil {
t.Fatal(err)
}
res.Body.Close()
spans := sr.Ended()
require.Len(t, spans, 4)
assert.Equal(t, "HTTP GET", spans[0].Name())
assert.Equal(t, "HTTP HEAD", spans[1].Name())
assert.Equal(t, "HTTP POST", spans[2].Name())
assert.Equal(t, "HTTP POST", spans[3].Name())
}
func TestClientWithTraceContext(t *testing.T) {
sr := tracetest.NewSpanRecorder()
provider := trace.NewTracerProvider(trace.WithSpanProcessor(sr))
tracer := provider.Tracer("")
ctx, span := tracer.Start(context.Background(), "http requests")
content := []byte("Hello, world!")
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if _, err := w.Write(content); err != nil {
t.Fatal(err)
}
}))
defer ts.Close()
res, err := otelhttp.Get(ctx, ts.URL)
if err != nil {
t.Fatal(err)
}
res.Body.Close()
span.End()
spans := sr.Ended()
require.Len(t, spans, 2)
assert.Equal(t, "HTTP GET", spans[0].Name())
assert.Equal(t, "http requests", spans[1].Name())
assert.NotEmpty(t, spans[0].Parent().SpanID())
assert.Equal(t, spans[1].SpanContext().SpanID(), spans[0].Parent().SpanID())
}
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