70 lines
1.9 KiB
Go
70 lines
1.9 KiB
Go
package main
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import (
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"encoding/json"
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"errors"
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"strings"
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"sync/atomic"
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"testing"
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"time"
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)
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// busOfAStandIn is a seat mesh-catalog that answers after release, or never (a refusal).
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type busOfAStandIn struct {
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release chan struct{}
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asked atomic.Int32
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}
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func (b *busOfAStandIn) Ask(string, any) (json.RawMessage, error) {
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b.asked.Add(1)
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<-b.release
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return nil, errors.New("the seat does not answer")
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}
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func (b *busOfAStandIn) Subscribe(string, func(string, json.RawMessage) error) error { return nil }
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// ADR 0636 §1: the runner waits for the first read of the seat list on the reader's Ready, but only to a bound that the
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// test gives as a channel; past it, it serves with the bootstrapped seats and says so, and nothing sleeps.
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func TestTheRunnerWaitsForTheFirstReadOfTheSeatListOnlyToItsBound(t *testing.T) {
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for _, row := range []struct {
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name string
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release bool // the seat ends its first read (here by refusing) before the bound
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wantSaid string
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wantReady bool
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}{
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{"the first read ends before the bound", true, "", true},
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{"the bound passes with the seat silent", false, "the seat list is not read yet", false},
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} {
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t.Run(row.name, func(t *testing.T) {
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b := &busOfAStandIn{release: make(chan struct{})}
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bound := make(chan time.Time, 1)
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var said []string
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if row.release {
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close(b.release)
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} else {
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bound <- time.Time{}
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}
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r := startSeatListOn(b, bound, func(f string, a ...any) { said = append(said, f) })
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if r == nil {
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t.Fatal("no reader")
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}
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ended := false
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select {
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case <-r.Ready():
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ended = true
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default:
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}
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if ended != row.wantReady {
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t.Errorf("first read ended = %v, want %v", ended, row.wantReady)
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}
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if got := strings.Join(said, ";"); !strings.Contains(got, row.wantSaid) || (row.wantSaid == "" && got != "") {
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t.Errorf("said %q, want %q", got, row.wantSaid)
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}
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if !row.release {
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close(b.release)
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<-r.Ready()
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}
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})
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}
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}
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