Add EquateErrors helper #178
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neild
approved these changes
Dec 16, 2019
cmp/cmpopts/equate.go
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| @@ -123,3 +124,36 @@ func (a timeApproximator) compare(x, y time.Time) bool { | |||
| // Note: time.Time doesn't have AfterOrEqual method hence the negation. | |||
| return !x.Add(a.margin).Before(y) | |||
| } | |||
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| // AnyError is an error that matches all other non-nil errors. | |||
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AnyError matches itself as well, so perhaps "...that matches any non-nil error."?
cmp/cmpopts/equate.go
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| func (anyError) Is(err error) bool { return err != nil } | ||
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| // EquateErrors returns a Comparer option that determines errors to be equal | ||
| // if errors.Is reports them to be equal. The AnyError error can be used to |
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"...if errors.Is reports them to match."
I've been trying (not always successfully) to use the verb "match" for the test performed by errors.Is.
The EquateErrors helper equates errors according to errors.Is. We also declare a sentinel AnyError value that matches any non-nil error value. This adds a dependency on golang.org/x/xerrors so that we can continue to suppport go1.8, which is our current minimally supported version of Go.
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The EquateErrors helper equates errors according to errors.Is.
We also declare a sentinel AnyError value that matches any
non-nil error value.
This adds a dependency on golang.org/x/xerrors so that we can
continue to suppport go1.8, which is our current minimally
supported version of Go.
Fixes #89