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hooks_test.go

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package bob

import (

"context"

"fmt"

"testing"

"github.com/google/go-cmp/cmp"

)

func TestHooks(t *testing.T) {

type skipKey struct{}

var H Hooks[*string, skipKey]

// Test Adding Hooks

for i := range 5 {

initial := len(H.hooks)

f := func(ctx context.Context, _ Executor, s *string) (context.Context, error) {

*s = *s + fmt.Sprintf("%d", initial+1)

return ctx, nil

}

H.AppendHooks(f)

if len(H.hooks) != initial+1 {

t.Fatalf("Did not add hook number %d", i+1)

}

}

s := ""

if _, err := H.RunHooks(context.Background(), nil, &s); err != nil {

t.Fatal(err)

}

if diff := cmp.Diff("12345", s); diff != "" {

t.Fatal(diff)

}

// test skipping hooks

s = ""

if _, err := H.RunHooks(context.WithValue(context.Background(), skipKey{}, true), nil, &s); err != nil {

t.Fatal(err)

}

if diff := cmp.Diff("", s); diff != "" {

t.Fatal(diff)

}

}