ticker/ticker_test: adds Ticker interface tests

This commit is contained in:
Conner Fromknecht 2018-08-01 12:40:32 -07:00
parent eeab500de7
commit 83353b44bd
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99
ticker/ticker_test.go Normal file
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package ticker_test
import (
"testing"
"time"
"github.com/lightningnetwork/lnd/ticker"
)
const interval = 50 * time.Millisecond
const numActiveTicks = 3
var tickers = []struct {
name string
ticker ticker.Ticker
}{
{
"default ticker",
ticker.New(interval),
},
{
"mock ticker",
ticker.MockNew(interval),
},
}
// TestTickers verifies that both our production and mock tickers exhibit the
// same principle behaviors when accessed via the ticker.Ticker interface
// methods.
func TestInterfaceTickers(t *testing.T) {
for _, test := range tickers {
t.Run(test.name, func(t *testing.T) {
testTicker(t, test.ticker)
})
}
}
// testTicker asserts the behavior of a freshly initialized ticker.Ticker.
func testTicker(t *testing.T, ticker ticker.Ticker) {
// Newly initialized ticker should start off inactive.
select {
case <-ticker.Ticks():
t.Fatalf("ticker should not have ticked before calling Resume")
case <-time.After(2 * interval):
}
// Resume, ticker should be active and start sending ticks.
ticker.Resume()
for i := 0; i < numActiveTicks; i++ {
select {
case <-ticker.Ticks():
case <-time.After(2 * interval):
t.Fatalf(
"ticker should have ticked after calling Resume",
)
}
}
// Pause, check that ticker is inactive and sends no ticks.
ticker.Pause()
select {
case <-ticker.Ticks():
t.Fatalf("ticker should not have ticked after calling Pause")
case <-time.After(2 * interval):
}
// Pause again, expect same behavior as after first invocation.
ticker.Pause()
select {
case <-ticker.Ticks():
t.Fatalf("ticker should not have ticked after calling Pause again")
case <-time.After(2 * interval):
}
// Resume again, should result in normal active behavior.
ticker.Resume()
for i := 0; i < numActiveTicks; i++ {
select {
case <-ticker.Ticks():
case <-time.After(2 * interval):
t.Fatalf(
"ticker should have ticked after calling Resume",
)
}
}
// Stop the ticker altogether, should render it inactive.
ticker.Stop()
select {
case <-ticker.Ticks():
t.Fatalf("ticker should not have ticked after calling Stop")
case <-time.After(2 * interval):
}
}