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package gateway_test

import (
	"context"
	"jinx/pkg/discord/gateway"
	"jinx/pkg/discord/mocks"
	"testing"
	"time"

	"github.com/rs/zerolog"
	"github.com/stretchr/testify/mock"
	"github.com/stretchr/testify/require"
)

func TestHeartBeats(t *testing.T) {
	// This is probably a flaky test, if it fails, change the error margin.
	// Also, Discord sets it's own interval acceptance margins, perhaps we should
	// use that instead of a hardcoded error margin.
	errorMargin := 2 * time.Millisecond

	logger := zerolog.New(zerolog.NewTestWriter(t))
	g := mocks.Gateway{}

	beats := make(chan struct{}, 1)

	g.On("Heartbeat").Return(nil).Run(func(_ mock.Arguments) {
		beats <- struct{}{}
	})

	heartbeat := gateway.NewHeartbeat(&logger, &g)

	ctx, cancel := context.WithCancel(context.
"o">:= 5 * time.Millisecond // Every 5 ms, way faster than Discord's default. start := time.Now() heartbeat.Start(ctx, interval) <-beats jitter := time.Since(start) require.Less(t, jitter, interval+errorMargin, "the first jitter heartbeat should happen before the interval") start = time.Now() <-beats secondBeat := time.Now() require.WithinDuration(t, start.Add(interval), secondBeat, errorMargin, "the second beat should happen roughly with the interval") start = secondBeat <-beats thirdBeat := time.Now() require.WithinDuration(t, start.Add(interval), thirdBeat, errorMargin, "the third beat should happen roughly with the interval") g.AssertNumberOfCalls(t, "Heartbeat", 3) g.AssertExpectations(t) } func TestHeartRespondsToForce(t *testing.T) { logger := zerolog.New(zerolog.NewTestWriter(t)) g := mocks.Gateway{} beats := make(chan struct{}, 1) g.On("Heartbeat").Return(nil).Run(func(_ mock.Arguments) { beats <- struct{}{} }) heartbeat := gateway.NewHeartbeat(&logger, &g) ctx, cancel := context.WithCancel(context.Background()) defer cancel() interval := 1 * time.Hour // Abnormally long, so we don't accidentally trigger the normal heartbeat. heartbeat.Start(ctx, interval) time.Sleep(1 * time.Millisecond) // Wait for routine to start. start := time.Now() heartbeat.ForceHeartbeat() <-beats require.WithinDuration(t, start, time.Now(), 1*time.Millisecond, "the forced heartbeat should happen within 1ms") g.AssertNumberOfCalls(t, "Heartbeat", 1) g.AssertExpectations(t) } func TestHeartDiesOnContextCancel(t *testing.T) { logger := zerolog.New(zerolog.NewTestWriter(t)) g := mocks.Gateway{} g.On("Heartbeat").Return(nil).Maybe() heartbeat := gateway.NewHeartbeat(&logger, &g) ctx, cancel := context.WithCancel(context.Background()) interval := 1 * time.Millisecond heartbeat.Start(ctx, interval) cancel() time.Sleep(5 * time.Millisecond) g.AssertNotCalled(t, "Heartbeat") g.AssertExpectations(t) }