Please make all tests work offline or make it easy to skip tests requiring Internet

[mgorny]

Problem description

FWICS, pixi's test suite mostly works offline, except for 4 tests:

failures:

---- solve_group_tests::test_dont_record_not_present_package_as_purl stdout ----
Created /var/tmp/portage/dev-util/pixi-0.39.5/temp/.tmpEejz2Y/pixi.toml
thread 'solve_group_tests::test_dont_record_not_present_package_as_purl' panicked at tests/integration_rust/solve_group_tests.rs:329:14
:
called `Result::unwrap()` on an `Err` value: 
  × failed to download pypi name mapping
  ├─▶ Request failed after 3 retries
  ├─▶ error sending request for url (https://conda-mapping.prefix.dev/hash-
  │   v0/7f19352d978e7a7181eb8abe398cd35397e5be4d3851680ca5f334f2515fa628)
  ├─▶ client error (Connect)
  ├─▶ dns error: failed to lookup address information: Temporary failure in
  │   name resolution
  ╰─▶ failed to lookup address information: Temporary failure in name
      resolution

note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

---- solve_group_tests::test_compressed_mapping_catch_not_pandoc_not_a_python_package stdout ----
Created /var/tmp/portage/dev-util/pixi-0.39.5/temp/.tmpmUTiPC/pixi.toml
thread 'solve_group_tests::test_compressed_mapping_catch_not_pandoc_not_a_python_package' panicked at tests/integration_rust/solve_grou
p_tests.rs:273:14:
called `Result::unwrap()` on an `Err` value: 
  × failed to download pypi name mapping
  ├─▶ Request failed after 3 retries
  ├─▶ error sending request for url (https://conda-mapping.prefix.dev/hash-
  │   v0/79f820488b35eac730c2358c9f90b094fbc29dbb02d4429e43b60e331445fbf0)
  ├─▶ client error (Connect)
  ├─▶ dns error: failed to lookup address information: Temporary failure in
  │   name resolution
  ╰─▶ failed to lookup address information: Temporary failure in name
      resolution


---- solve_group_tests::test_purl_are_missing_for_non_conda_forge stdout ----
Created /var/tmp/portage/dev-util/pixi-0.39.5/temp/.tmpTP4Hsw/pixi.toml
thread 'solve_group_tests::test_purl_are_missing_for_non_conda_forge' panicked at tests/integration_rust/solve_group_tests.rs:186:14:
called `Result::unwrap()` on an `Err` value: 
  × failed to download pypi name mapping
  ├─▶ Request failed after 3 retries
  ├─▶ error sending request for url (https://conda-mapping.prefix.dev/hash-
  │   v0/06e350efc8be524f03e3dc320d35dde0b224c47d69020936f59b79b32fb75b81)
  ├─▶ client error (Connect)
  ├─▶ dns error: failed to lookup address information: Temporary failure in
  │   name resolution
  ╰─▶ failed to lookup address information: Temporary failure in name
      resolution


---- solve_group_tests::test_purl_are_generated_using_custom_mapping stdout ----
Created /var/tmp/portage/dev-util/pixi-0.39.5/temp/.tmpIwgfRA/pixi.toml
thread 'solve_group_tests::test_purl_are_generated_using_custom_mapping' panicked at tests/integration_rust/solve_group_tests.rs:229:14
:
called `Result::unwrap()` on an `Err` value: 
  × failed to download pypi name mapping
  ├─▶ Request failed after 3 retries
  ├─▶ error sending request for url (https://conda-mapping.prefix.dev/hash-
  │   v0/06e350efc8be524f03e3dc320d35dde0b224c47d69020936f59b79b32fb75b81)
  ├─▶ client error (Connect)
  ├─▶ dns error: failed to lookup address information: Temporary failure in
  │   name resolution
  ╰─▶ failed to lookup address information: Temporary failure in name
      resolution


failures:
    solve_group_tests::test_compressed_mapping_catch_not_pandoc_not_a_python_package
    solve_group_tests::test_dont_record_not_present_package_as_purl
    solve_group_tests::test_purl_are_generated_using_custom_mapping
    solve_group_tests::test_purl_are_missing_for_non_conda_forge

Is there any chance you'd either manage to make these tests work offline as well, or alternatively add an easy way to skip them? For example, uv uses features to control tests requiring additional resources — if that's okay with you, I can make a pull request adding online-tests or something like that (enabled by default).

[baszalmstra]

Sounds great!