An assertion that compares the elements of the slices/arrays disregarding the order,
i.e. it checks whether each element in the first slice/array appears the same number of times in it
as in the second slice/array.
This name seemed like it would be easy to find.
Possible alternatives for the name:
- ContainsSameElements
- IsPermutation (C++: http://en.cppreference.com/w/cpp/algorithm/is_permutation)
- MatchArray (rspec: http://www.rubydoc.info/github/rspec/rspec-expectations/RSpec/Matchers:match_array)
- EqualSorted
- Other ideas?
This implementaiton is O(N^2), while sorting both lists first would be O(nlogn).
However, this one doesn't need to copy the lists, so it is simpler and doesn't require additional
memory and time for the copies.
I realize this was deemed as out of scope
https://github.com/stretchr/testify/issues/275
but I decided to give it a shot as I needed it also.
The assertion function was simply returning false, which doesn't actually fail a test.
An example test that should have failed but doesn't:
func TestNotSubset(t *testing.T) {
assert.NotSubset(t, []string{"x"}, nil)
}
Make `Empty` work against any struct and custom types, by replacing
explicit zero value comparisons with a `DeepEqual` comparison with
the type's `reflect.ZeroValue`.
This change fixes a race condition I discovered when a multithreaded
test in a service I work on failed under -race. The included test case
simulates that failure (concurrent mutation of a Call with invocations
on the mock). The test will fail with a data race if run under the
race detector; the new locking ensures that call fields are not
accessed without the protection of the parent mutex.
When `len(actual) > len(expected)`, this for loop would cause a panic.
Alternative to this implementation, there could be a check for
`if len(actual) != len(expected)`, but generating a meaningful message
describing that is already provided by `diff()`. So we defer to diff in
every case.
Fixes#393
Pre-diff:
```
panic: runtime error: index out of range
```
Post-diff:
```
panic:
mock: Unexpected Method Call
-----------------------------
MyFunction(string,string,string)
0: string,
1: string,
2: string
The closest call I have is:
MyFunction(string,string)
0: "mock.Anything"
1: "mock.Anything"
Provided 3 arguments, mocked for 2 arguments
```
