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condition.go
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condition.go
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// SPDX-License-Identifier: Apache-2.0
// Copyright Authors of Cilium
package testutils
import (
"fmt"
"time"
)
// ConditionFunc is the function implementing the condition, it must return
// true if the condition has been met
type ConditionFunc func() bool
// WaitUntil evaluates the condition every 10 milliseconds and waits for the
// condition to be met. The function will time out and return an error after
// timeout
func WaitUntil(condition ConditionFunc, timeout time.Duration) error {
return WaitUntilWithSleep(condition, timeout, 10*time.Millisecond)
}
// WaitUntilWithSleep does the same as WaitUntil except that the sleep time
// between the condition checks is given.
func WaitUntilWithSleep(condition ConditionFunc, timeout, sleep time.Duration) error {
now := time.Now()
for {
if time.Since(now) > timeout {
return fmt.Errorf("timeout reached while waiting for condition")
}
if condition() {
return nil
}
time.Sleep(sleep)
}
}