diff options
Diffstat (limited to 'modules/caddyhttp/tracing/module_test.go')
-rw-r--r-- | modules/caddyhttp/tracing/module_test.go | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/modules/caddyhttp/tracing/module_test.go b/modules/caddyhttp/tracing/module_test.go new file mode 100644 index 0000000..0fbc05b --- /dev/null +++ b/modules/caddyhttp/tracing/module_test.go @@ -0,0 +1,182 @@ +package tracing + +import ( + "context" + "errors" + "net/http" + "net/http/httptest" + "strings" + "testing" + + "github.com/caddyserver/caddy/v2" + "github.com/caddyserver/caddy/v2/caddyconfig/caddyfile" + "github.com/caddyserver/caddy/v2/modules/caddyhttp" +) + +func TestTracing_UnmarshalCaddyfile(t *testing.T) { + tests := []struct { + name string + spanName string + d *caddyfile.Dispenser + wantErr bool + }{ + { + name: "Full config", + spanName: "my-span", + d: caddyfile.NewTestDispenser(` +tracing { + span my-span +}`), + wantErr: false, + }, + { + name: "Only span name in the config", + spanName: "my-span", + d: caddyfile.NewTestDispenser(` +tracing { + span my-span +}`), + wantErr: false, + }, + { + name: "Empty config", + d: caddyfile.NewTestDispenser(` +tracing { +}`), + wantErr: false, + }, + } + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + ot := &Tracing{} + if err := ot.UnmarshalCaddyfile(tt.d); (err != nil) != tt.wantErr { + t.Errorf("UnmarshalCaddyfile() error = %v, wantErrType %v", err, tt.wantErr) + } + + if ot.SpanName != tt.spanName { + t.Errorf("UnmarshalCaddyfile() SpanName = %v, want SpanName %v", ot.SpanName, tt.spanName) + } + }) + } +} + +func TestTracing_UnmarshalCaddyfile_Error(t *testing.T) { + tests := []struct { + name string + d *caddyfile.Dispenser + wantErr bool + }{ + { + name: "Unknown parameter", + d: caddyfile.NewTestDispenser(` + tracing { + foo bar + }`), + wantErr: true, + }, + { + name: "Missed argument", + d: caddyfile.NewTestDispenser(` +tracing { + span +}`), + wantErr: true, + }, + } + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + ot := &Tracing{} + if err := ot.UnmarshalCaddyfile(tt.d); (err != nil) != tt.wantErr { + t.Errorf("UnmarshalCaddyfile() error = %v, wantErrType %v", err, tt.wantErr) + } + }) + } +} + +func TestTracing_ServeHTTP_Propagation_Without_Initial_Headers(t *testing.T) { + ot := &Tracing{ + SpanName: "mySpan", + } + + req := httptest.NewRequest("GET", "https://example.com/foo", nil) + w := httptest.NewRecorder() + + var handler caddyhttp.HandlerFunc = func(writer http.ResponseWriter, request *http.Request) error { + traceparent := request.Header.Get("Traceparent") + if traceparent == "" || strings.HasPrefix(traceparent, "00-00000000000000000000000000000000-0000000000000000") { + t.Errorf("Invalid traceparent: %v", traceparent) + } + + return nil + } + + ctx, cancel := caddy.NewContext(caddy.Context{Context: context.Background()}) + defer cancel() + + if err := ot.Provision(ctx); err != nil { + t.Errorf("Provision error: %v", err) + t.FailNow() + } + + if err := ot.ServeHTTP(w, req, handler); err != nil { + t.Errorf("ServeHTTP error: %v", err) + } +} + +func TestTracing_ServeHTTP_Propagation_With_Initial_Headers(t *testing.T) { + ot := &Tracing{ + SpanName: "mySpan", + } + + req := httptest.NewRequest("GET", "https://example.com/foo", nil) + req.Header.Set("traceparent", "00-11111111111111111111111111111111-1111111111111111-01") + w := httptest.NewRecorder() + + var handler caddyhttp.HandlerFunc = func(writer http.ResponseWriter, request *http.Request) error { + traceparent := request.Header.Get("Traceparent") + if !strings.HasPrefix(traceparent, "00-11111111111111111111111111111111") { + t.Errorf("Invalid traceparent: %v", traceparent) + } + + return nil + } + + ctx, cancel := caddy.NewContext(caddy.Context{Context: context.Background()}) + defer cancel() + + if err := ot.Provision(ctx); err != nil { + t.Errorf("Provision error: %v", err) + t.FailNow() + } + + if err := ot.ServeHTTP(w, req, handler); err != nil { + t.Errorf("ServeHTTP error: %v", err) + } +} + +func TestTracing_ServeHTTP_Next_Error(t *testing.T) { + ot := &Tracing{ + SpanName: "mySpan", + } + + req := httptest.NewRequest("GET", "https://example.com/foo", nil) + w := httptest.NewRecorder() + + expectErr := errors.New("test error") + + var handler caddyhttp.HandlerFunc = func(writer http.ResponseWriter, request *http.Request) error { + return expectErr + } + + ctx, cancel := caddy.NewContext(caddy.Context{Context: context.Background()}) + defer cancel() + + if err := ot.Provision(ctx); err != nil { + t.Errorf("Provision error: %v", err) + t.FailNow() + } + + if err := ot.ServeHTTP(w, req, handler); err == nil || !errors.Is(err, expectErr) { + t.Errorf("expected error, got: %v", err) + } +} |