traefik/pkg/middlewares/tracing/entrypoint_test.go

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package tracing
import (
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"context"
"net/http"
"net/http/httptest"
"testing"
"github.com/opentracing/opentracing-go/ext"
"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
"github.com/traefik/traefik/v2/pkg/tracing"
)
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func TestEntryPointMiddleware(t *testing.T) {
type expected struct {
Tags map[string]interface{}
OperationName string
}
testCases := []struct {
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desc string
entryPoint string
spanNameLimit int
tracing *trackingBackenMock
expected expected
}{
{
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desc: "no truncation test",
entryPoint: "test",
spanNameLimit: 0,
tracing: &trackingBackenMock{
tracer: &MockTracer{Span: &MockSpan{Tags: make(map[string]interface{})}},
},
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expected: expected{
Tags: map[string]interface{}{
"span.kind": ext.SpanKindRPCServerEnum,
"http.method": http.MethodGet,
"component": "",
"http.url": "http://www.test.com",
"http.host": "www.test.com",
},
OperationName: "EntryPoint test www.test.com",
},
},
{
desc: "basic test",
entryPoint: "test",
spanNameLimit: 25,
tracing: &trackingBackenMock{
tracer: &MockTracer{Span: &MockSpan{Tags: make(map[string]interface{})}},
},
expected: expected{
Tags: map[string]interface{}{
"span.kind": ext.SpanKindRPCServerEnum,
"http.method": http.MethodGet,
"component": "",
"http.url": "http://www.test.com",
"http.host": "www.test.com",
},
OperationName: "EntryPoint te... ww... 0c15301b",
},
},
}
for _, test := range testCases {
t.Run(test.desc, func(t *testing.T) {
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newTracing, err := tracing.NewTracing("", test.spanNameLimit, test.tracing)
require.NoError(t, err)
req := httptest.NewRequest(http.MethodGet, "http://www.test.com", nil)
rw := httptest.NewRecorder()
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next := http.HandlerFunc(func(http.ResponseWriter, *http.Request) {
span := test.tracing.tracer.(*MockTracer).Span
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tags := span.Tags
assert.Equal(t, test.expected.Tags, tags)
assert.Equal(t, test.expected.OperationName, span.OpName)
})
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handler := NewEntryPoint(context.Background(), newTracing, test.entryPoint, next)
handler.ServeHTTP(rw, req)
})
}
}