|author||Joe Tsai <email@example.com>||Mon Feb 25 13:54:08 2019 -0800|
|committer||Joe Tsai <firstname.lastname@example.org>||Mon Feb 25 16:32:07 2019 -0800|
Support AllowUnexportedWithinModule For sufficiently large codebases with many struct types defined, it is untenable to specify a large list of all types in the repository that AllowUnexported permits visibility for. In Go, we observe that code with a shared owner often lives in the same repository, and all sub-packages within a repository often share a common package path prefix. Thus, permit expressing visibility allowances in terms of package path prefixes instead of individual types. While not explicitly documented, this feature allows the universal comparing of unexported fields on all types: cmp.Equal(x, y, cmp.AllowUnexportedWithinModule("")) This "feature" is intentionally undocumented (but a natural side-effect of the expressed behavior of PackagePrefix) since it considered to be bad practice.
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
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, 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
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