one experiment, multiple measurements

mm.exs

test "chat" do
  bucket = create_bucket
  assert %{__struct__: "Bucket"} = bucket
  assert Bucket.empty?(bucket)
  Bucket.add(bucket, 1)
  assert bucket.contents == [1]
end


# instead
setup context do
  assign bucket: create_bucket
end

should "create bucket", context do
  assert %{__struct__: "Bucket"} = context.bucket
  assert Bucket.empty?(bucket)
end

should "be empty", context do
  assert Bucket.empty?(bucket)
end

should "add to bucket", context do
  Bucket.add(bucket, 1)
  assert bucket.contents == 1
end

should "remove from bucket", context ...