In case one needs to use any test fixture inside your tests and those are defined inside this directory, they need to be added to the //go:embed directive in embed.go.
For example, if one wants to include this Readme as a test fixture (potential bad idea in reality!),
// embed.go
...
//go:embed some other files README.md
...
This fixture can be accessed in the e2e tests using test/e2e/framework/testfiles.Read like
testfiles.Read("test/fixtures/README.md).
This is needed since migrating to //go:embed from go-bindata.