| commit | fd81a2bda5e4727f3671d01a5a3c1d54be06f19d | [log] [tgz] |
|---|---|---|
| author | Joe Tsai <joetsai@digital-static.net> | Tue Feb 26 16:33:33 2019 -0800 |
| committer | GitHub <noreply@github.com> | Tue Feb 26 16:33:33 2019 -0800 |
| tree | d4a5dad49a2a63db449f0d91a267009432d661c2 | |
| parent | cc11d21e54df4cff1c8c2f793a1874b0aeeedf68 [diff] |
Evaluate options even if values are invalid (#121) Rather than checking up-front whether the values are invalid, give tryOptions a chance to operate on them and potentially ignore the values. This is useful since a value can only be invalid if it is a missing slice element or map entry, and provides FilterPath combined with Ignore the ability to ignore such cases. Some complexity is added to compareSlice to look for ignored elements first before applying diffing so that we can decouple the stability of the diffing algorithm from the primary result.
This package is intended to be a more powerful and safer alternative to reflect.DeepEqual for comparing whether two values are semantically equal.
The primary features of cmp are:
When the default behavior of equality does not suit the needs of the test, custom equality functions can override the equality operation. For example, an equality function may report floats as equal so long as they are within some tolerance of each other.
Types that have an Equal method may use that method to determine equality. This allows package authors to determine the equality operation for the types that they define.
If no custom equality functions are used and no Equal method is defined, equality is determined by recursively comparing the primitive kinds on both values, much like reflect.DeepEqual. Unlike reflect.DeepEqual, unexported fields are not compared by default; they result in panics unless suppressed by using an Ignore option (see cmpopts.IgnoreUnexported) or explicitly compared using the AllowUnexported option.
See the GoDoc documentation for more information.
This is not an official Google product.
go get -u github.com/google/go-cmp/cmp
BSD - See LICENSE file