Advanced feature for testing aka reflect.DeepEqual?

Question

go

I need a function to compare two complex nested structures.
`reflect.DeepEqual` basically copes with its mission, but it returns true or false, and I would like to have more detailed information - which field when compared gave the wrong result, what index the structure had if it was inside the slice. Is there something similar already implemented. That is, I need a function that does the same thing as reflect.DeepEqual, but which will return an error with a description of the problem, not true or false.
Maybe there is something already ready, do not want to write another bike.

Answer 1

I will advise https://github.com/stretchr/testify
Namely, the assert package, it shows diff structures.

Diff:
--- Expected
+++ Actual
@@ -2,5 +2,5 @@
  (int) 1,
- (int) 2,
  (int) 3,
- (int) 4
+ (int) 5,
+ (int) 7
 }

Easy to use:
where t is testing.T (the only argument of the test function)