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29 lines
572 B
Go
29 lines
572 B
Go
package test
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import (
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"runtime"
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"testing"
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"time"
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"github.com/weaveworks/scope/test/reflect"
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)
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// Poll repeatedly evaluates condition until we either timeout, or it succeeds.
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func Poll(t *testing.T, d time.Duration, want interface{}, have func() interface{}) {
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deadline := time.Now().Add(d)
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for {
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if time.Now().After(deadline) {
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break
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}
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if reflect.DeepEqual(want, have()) {
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return
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}
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time.Sleep(d / 10)
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}
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h := have()
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if !reflect.DeepEqual(want, h) {
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_, file, line, _ := runtime.Caller(1)
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t.Fatalf("%s:%d: %s", file, line, Diff(want, h))
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}
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}
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