package tracing import ( "context" "net/http" "net/http/httptest" "testing" "github.com/containous/traefik/pkg/tracing" "github.com/opentracing/opentracing-go/ext" "github.com/stretchr/testify/assert" "github.com/stretchr/testify/require" ) func TestEntryPointMiddleware(t *testing.T) { type expected struct { Tags map[string]interface{} OperationName string } testCases := []struct { desc string entryPoint string spanNameLimit int tracing *trackingBackenMock expected expected }{ { desc: "no truncation test", entryPoint: "test", spanNameLimit: 0, 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 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) { 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() next := http.HandlerFunc(func(http.ResponseWriter, *http.Request) { span := test.tracing.tracer.(*MockTracer).Span tags := span.Tags assert.Equal(t, test.expected.Tags, tags) assert.Equal(t, test.expected.OperationName, span.OpName) }) handler := NewEntryPoint(context.Background(), newTracing, test.entryPoint, next) handler.ServeHTTP(rw, req) }) } }