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42 lines
923 B
Go
42 lines
923 B
Go
package picker
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import (
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"context"
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"testing"
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"time"
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"github.com/samber/lo"
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"github.com/stretchr/testify/assert"
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)
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func sleepAndSend[T any](ctx context.Context, delay int, input T) func() (T, error) {
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return func() (T, error) {
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timer := time.NewTimer(time.Millisecond * time.Duration(delay))
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select {
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case <-timer.C:
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return input, nil
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case <-ctx.Done():
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return lo.Empty[T](), ctx.Err()
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}
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}
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}
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func TestPicker_Basic(t *testing.T) {
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picker, ctx := WithContext[int](context.Background())
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picker.Go(sleepAndSend(ctx, 30, 2))
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picker.Go(sleepAndSend(ctx, 20, 1))
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number := picker.Wait()
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assert.NotNil(t, number)
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assert.Equal(t, number, 1)
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}
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func TestPicker_Timeout(t *testing.T) {
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picker, ctx := WithTimeout[int](context.Background(), time.Millisecond*5)
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picker.Go(sleepAndSend(ctx, 20, 1))
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number := picker.Wait()
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assert.Equal(t, number, lo.Empty[int]())
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assert.NotNil(t, picker.Error())
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}
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