[6.x] Add assertJsonPathStrict method

[Arkanius]

Implements the suggestion of @BrandonSurowiec and @ttrig at #30142

This function is an alias of assertJsonPath. The tests are just the same

[SjorsO]

It is probably a better idea to make assertJsonPath strict by default. @ttrig gave a good example of the results you can get when you use this assertion in a non-strict way:

{
    "foo": false
}

$response->assertJsonPath('foo', false); // pass
$response->assertJsonPath('foo', 0); // pass
$response->assertJsonPath('foo', null); // pass

You should never want behavior like this in a test.

[Arkanius]

You have a point. I think the best place to talk about it is at the original PR, #30142

[ahinkle]

Doesn't really add any benefit. assertJson, which has an optional strict argument, doesn't have its own strict method.

[Arkanius]

Well, this comportament is wierd to me. I implemented the suggestion by thinking that laravel has some methods like this.

If this is really not relevant I'll close the pr.

[ttrig]

Doesn't really add any benefit. assertJson, which has an optional strict argument, doesn't have its own strict method.

One benefit could be the readability of assertJsonPath('foo', false, true) compared to assertJsonPathStrict('foo', false).

Would be nice until assertJsonPath is strict by default.

[taylorotwell]

No need.