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pipe_test.go
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pipe_test.go
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package pipe
import (
"errors"
"fmt"
"testing"
)
func TestPipe(t *testing.T) {
t.Run("error in the middle", func(t *testing.T) {
err := New().
Next(func() error { fmt.Println("one"); return nil }).
Next(func() error { fmt.Println("two"); return nil }).
Next(func() error { fmt.Println("three"); return errors.New("error on three") }).
Next(func() error { fmt.Println("four"); return nil }).
Do()
if err != nil {
fmt.Printf("error: %v\n", err)
}
})
t.Run("on error", func(t *testing.T) {
New().
Next(func() error { fmt.Println("one"); return nil }).
Next(func() error { fmt.Println("two"); return nil }).
Next(func() error { fmt.Println("three"); return nil }).
Next(func() error { fmt.Println("four"); return nil }).
OnErr(func(err error) { fmt.Printf("error: %v\n", err) })
})
t.Run("no errors", func(t *testing.T) {
err := New().
Next(func() error { fmt.Println("one"); return nil }).
Next(func() error { fmt.Println("two"); return nil }).
Next(func() error { fmt.Println("three"); return nil }).
Next(func() error { fmt.Println("four"); return nil }).
Do()
if err != nil {
fmt.Printf("error: %v\n", err)
}
})
t.Run("realistic? not really", func(t *testing.T) {
f1 := func() error {
return nil
}
f2 := func() error {
return errors.New("some error")
}
New().
Next(f1).
Next(f2).
OnErr(func(err error) {
fmt.Printf("error: %v\n", err)
})
})
}