36 lines
677 B
Go
36 lines
677 B
Go
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package core_test
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import (
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"errors"
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"fmt"
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. "dappco.re/go/core"
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)
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func ExampleE() {
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err := E("cache.Get", "key not found", nil)
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fmt.Println(Operation(err))
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fmt.Println(ErrorMessage(err))
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// Output:
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// cache.Get
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// key not found
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}
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func ExampleWrap() {
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cause := errors.New("connection refused")
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err := Wrap(cause, "database.Connect", "failed to reach host")
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fmt.Println(Operation(err))
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fmt.Println(errors.Is(err, cause))
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// Output:
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// database.Connect
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// true
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}
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func ExampleRoot() {
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cause := errors.New("original")
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wrapped := Wrap(cause, "op1", "first wrap")
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double := Wrap(wrapped, "op2", "second wrap")
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fmt.Println(Root(double))
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// Output: original
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}
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