| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | package snmp |
| 4 | |
| 5 | import ( |
| 6 | "context" |
| 7 | "sync" |
| 8 | "testing" |
| 9 | |
| 10 | "github.com/netdata/netdata/go/plugins/pkg/funcapi" |
| 11 | "github.com/stretchr/testify/assert" |
| 12 | ) |
| 13 | |
| 14 | type testMethodHandler struct{} |
| 15 | |
| 16 | func (testMethodHandler) MethodParams(context.Context, string) ([]funcapi.ParamConfig, error) { |
| 17 | return nil, nil |
| 18 | } |
| 19 | |
| 20 | func (testMethodHandler) Handle(context.Context, string, funcapi.ResolvedParams) *funcapi.FunctionResponse { |
| 21 | return &funcapi.FunctionResponse{Status: 200} |
| 22 | } |
| 23 | |
| 24 | func (testMethodHandler) Cleanup(context.Context) {} |
| 25 | |
| 26 | func TestFuncRouter_ConcurrentRegisterAndHandle(t *testing.T) { |
| 27 | tests := map[string]struct { |
| 28 | iterations int |
| 29 | }{ |
| 30 | "registering a late handler does not race with function calls": { |
| 31 | iterations: 200, |
| 32 | }, |
| 33 | } |
| 34 | |
| 35 | for name, tc := range tests { |
| 36 | t.Run(name, func(t *testing.T) { |
| 37 | router := newFuncRouter(newIfaceCache()) |
| 38 | handler := testMethodHandler{} |
| 39 | ctx := context.Background() |
| 40 | |
| 41 | var wg sync.WaitGroup |
| 42 | wg.Add(2) |
| 43 | |
| 44 | go func() { |
| 45 | defer wg.Done() |
| 46 | for i := 0; i < tc.iterations; i++ { |
| 47 | router.registerHandler("dynamic", handler) |
| 48 | } |
| 49 | }() |
| 50 | |
| 51 | go func() { |
| 52 | defer wg.Done() |
| 53 | for i := 0; i < tc.iterations; i++ { |
| 54 | _, _ = router.MethodParams(ctx, "dynamic") |
| 55 | resp := router.Handle(ctx, "dynamic", nil) |
| 56 | assert.NotNil(t, resp) |
| 57 | } |
| 58 | }() |
| 59 | |
| 60 | wg.Wait() |
| 61 | }) |
| 62 | } |
| 63 | } |