[Infra] Pull test for both read/write so that each file contains a describe.

[yuit]

From doing rewrite work, I realize that it is quite hard to understand the test because in a file there can be multiple describe which make it a bit hard to parse and understand. I propose that we should have one describe per file. The downside is that running take will take a bit longer as there are more initialization process to do

• operations/write

• operations/read