## Changes
Add new type of test helpers that run the command and compare full
output (golden files approach).
In case of JSON, there is also an option to ignore certain paths.
Add test for different versions of Python to go through bundle init
default-python / validate / deploy / summary.
## Tests
New integration tests.
## Changes
The `Setenv` helper function configures an environment variable and
resets it to its original value when exiting the test scope. It is
incompatible with running tests in parallel because it modifies
process-wide state. The `libs/env` package defines functions to interact
with the environment but records `Setenv` calls on a `context.Context`.
This enables us to override/specialize the environment scoped to a
context.
Pre-requisites for removing the `t.Setenv` calls:
* Make `cmdio.NewIO` accept a context and use it with `libs/env`
* Make all `internal/testcli` functions use a context
The rest of this change:
* Modifies integration tests to initialize a context to use if there
wasn't already one
* Updates `t.Setenv` calls to use `env.Set`
## Tests
n/a
## Changes
The CLI test runner instantiates a new CLI "instance" through
`cmd.New()` and runs it with specified arguments. This is as close as we
get to running the real CLI **in-process**. This runner was located in
the `internal` package next to other helpers. This change moves it to
its own dedicated package.
Note: this runner transitively imports pretty much the entire
repository, which is why we intentionally keep it _separate_ from
`testutil`.
## Tests
n/a
Denis Bilenko
Pieter Noordhuis