yaole
47 lines
749 B
Go
47 lines
749 B
Go
package gerrors
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import (
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"errors"
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"fmt"
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"testing"
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)
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var err0 = errors.New("err0")
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var err1 = errors.New("err1")
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func fn0() error {
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return WithStack(WithAnnotating(err0, "comment0"))
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}
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func fn1() error {
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if err := fn0(); err != nil {
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e := ChainErrors(err1, err)
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return WithStack(WithAnnotating(e, "comment1"))
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}
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return nil
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}
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func fn2() error {
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if err := fn1(); err != nil {
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return WithMessage(err, "err2")
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}
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return nil
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}
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func TestError(t *testing.T) {
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e := WithAnnotating(err0, "comment0")
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fmt.Printf("%+v\n", e)
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fmt.Println()
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if !Is(fn2(), err0) || !Is(fn2(), err1) {
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t.Fail()
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}
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fmt.Println(fn2())
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fmt.Println()
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// output:
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// err2, caused by err1(comment1), caused by err0(comment0)
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fmt.Printf("%+v\n", fn2())
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}
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