python inline snapshot
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is a new tool that I am trying out for python testing. It takes snapshots of your outputs and places them inline with the test.

Date: April 17, 2024

inline-snapshot is a new tool that I am trying out for python testing. It takes snapshots of your outputs and places them inline with the test.

Here is the most basic starter.

[code]
  import inline_snapshot

  def test_one():
      assert 1 == snapshot()

Now when I run pytest my tests will fail because my assert has no value, but if I run pytest --inline-snapshot=create it will fill out my snapshot values and the file will then look like this.

[code]
  import inline_snapshot

  def test_one():
      assert 1 == snapshot(1)

It also works with pydantic models.

[code]
  class MyModel(BaseModel):
      name: str
      age: int
      nickname: str | None = None


  def test_my_model_instance():
      assert MyModel(name="Waylon", age=1) == snapshot(MyModel(name="Waylon", age=1))


  def test_my_model_fields():
      me = MyModel(name="Waylon", age=1, nickname='Waylon')
      assert me.name == snapshot("Waylon")
      assert me.age == snapshot(1)
      assert me.nickname == snapshot("Waylon")