package tracing import ( "context" "strings" "testing" "github.com/stretchr/testify/assert" ) func TestIt(t *testing.T) { ctx := context.Background() ctx = Child(ctx, "a") ctx = Child(ctx, "b") ctx = Child(ctx, "c") ctx = Child(ctx, "d") assert.Equal(t, "dcba", strings.Join(GetStack(ctx), "")) }