When running Docker / Compose commands, do NOT inherit the system
environment to ensure that the tests are reproducible regardless
of host settings.
Additionally, per-command environment overrides are provided to
the command instead of using `os.SetEnv`, as this is not safe when
running tests in parallel (`testing.T::SetEnv` will actually error
if used in this way!)
Signed-off-by: Milas Bowman <milas.bowman@docker.com>
The big mechanical change here is to NOT store `t` as a field on
the `CLI` object (which has been renamed as well to fix the odd
capitalization). The way the tests are structured meant that the
"subtests" were using the _parent_ `*testing.T` instance, which
causes various oddities including confusing messages on failure
about a child test causing a panic in the parent.
Additionally, a few tests have been blocked from running in
parallel because they are sharing `compose.yaml` fixtures and
can fail as a result (e.g. due to a port conflict on the host).
I'll fix these in follow-up PRs but want to focus on correctness
for the tests before optimizing them.
Signed-off-by: Milas Bowman <milas.bowman@docker.com>
Ulysses Souza
Milas Bowman
Guillaume Lours