func TestGenerateRandomInt64InRange(t *testing.T) {
assert := assert.On(t)
base := time.Now().Unix()
delta := 100
generator := NewTimestampGenerator(Timestamp(base), delta)
for i := 0; i < 100; i++ {
val := int64(generator())
assert.Int64(val).AtMost(base + int64(delta))
assert.Int64(val).AtLeast(base - int64(delta))
}
}
func TestNoRetry(t *testing.T) {
assert := assert.On(t)
startTime := time.Now().Unix()
err := Timed(10, 100000).On(func() error {
return nil
})
endTime := time.Now().Unix()
assert.Error(err).IsNil()
assert.Int64(endTime - startTime).AtLeast(0)
}
func TestExponentialBackoff(t *testing.T) {
assert := assert.On(t)
startTime := time.Now()
called := 0
err := ExponentialBackoff(10, 100).On(func() error {
called++
return errorTestOnly
})
duration := time.Since(startTime)
assert.Error(err).Equals(ErrRetryFailed)
assert.Int64(int64(duration / time.Millisecond)).AtLeast(4000)
}
func TestRetryExhausted(t *testing.T) {
assert := assert.On(t)
startTime := time.Now()
called := 0
err := Timed(2, 1000).On(func() error {
called++
return errorTestOnly
})
duration := time.Since(startTime)
assert.Error(err).Equals(ErrRetryFailed)
assert.Int64(int64(duration / time.Millisecond)).AtLeast(1900)
}
func TestRetryMultiple(t *testing.T) {
assert := assert.On(t)
startTime := time.Now()
called := 0
err := Timed(10, 1000).On(func() error {
if called < 5 {
called++
return errorTestOnly
}
return nil
})
duration := time.Since(startTime)
assert.Error(err).IsNil()
assert.Int64(int64(duration / time.Millisecond)).AtLeast(4900)
}