Snapshot diffing in test assertion

[iamogbz]

Is your feature request related to a problem? Please describe.

Snapshots should be helpful in indicating at a glance what has changed.

Describe the solution you'd like

def test_my_dict(snapshot):
	my_dict = {
		"field_0": True,
		"field_1": "no_value",
		"nested": {
			"field_0": 1,
		},
	}
	assert my_dict == snapshot(id="case1")
	my_dict["field_1"] = "yes_value"
	assert my_dict == snapshot(diff="case1")
	my_dict["nested"]["field_0"] = 2
	assert my_dict == snapshot(id="case3", diff=1)

# name: test_my_dict.case_1
  <class 'dict'> {
    'field_0': True,
    'field_1': 'no_value',
	'nested': <class 'dict'> {
        'field_0': 1
	},
  }
---
# name: test_my_dict.1
    'field_1': 'yes_value',
---
# name: test_my_dict.case_3
        'field_0': 2
---

Describe alternatives you've considered

N/A

Additional context

• https://jestjs.io/docs/en/snapshot-testing#1-treat-snapshots-as-code

[tophat-opensource-bot]

🎉 This issue has been resolved in version 2.1.0 🎉

The release is available on GitHub release

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