d6bb42e8ba
`activate` is bash syntax, so fish users had no way to take on the dev environment. `activate.fish` does what `activate` does: snapshots the keys it will change, applies the composed env, defines a `hermes` function that refuses outside the worktree, adds the prompt prefix, and defines `deactivate`. It shells out to the same bash library, so composition is not reimplemented. `pm.environments --format fish` emits the env as `set -gx` statements. fish's read-only names (`PWD`, `SHLVL`, `_`, ...) are skipped because `set -gx PWD` aborts the script, and values named `*PATH` stay lists. `hermes_compose_env` takes the dialect (`sh` or `fish`) as its second argument.
86 lines
3.1 KiB
Python
86 lines
3.1 KiB
Python
"""``activate.fish``: fish takes on the environment and gives it back, as ``activate`` does for bash.
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Runs the real script under a real fish against the shared isolated checkout
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(tests/pm/activation_support.py). Skipped where fish is not installed.
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"""
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from __future__ import annotations
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import shutil
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import subprocess
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from pathlib import Path
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import pytest
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from tests.pm.activation_support import fake_store, posix, sync_checkout
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# Spawns children with a home it builds itself; the parent's must stay real.
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pytestmark = [
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pytest.mark.real_machine_home,
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pytest.mark.platforms("posix"),
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pytest.mark.skipif(shutil.which("fish") is None, reason="fish is not installed"),
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]
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def _fish(root: Path, env: dict, script: str, tmp_path: Path) -> subprocess.CompletedProcess:
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return subprocess.run(
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["fish", "--no-config", "-c", script.replace("@ACTIVATE@", posix(root / "activate.fish"))],
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cwd=tmp_path, env=env, capture_output=True, text=True, timeout=60,
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)
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def test_activate_applies_the_environment_and_deactivate_restores_the_shell(tmp_path):
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root, env = sync_checkout(tmp_path)
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fake_store(tmp_path)
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run = _fish(root, env, """
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set -gx PYTHONPATH caller-original
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set -gx VIRTUAL_ENV caller-venv
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set -l original_path (string join : $PATH)
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source "@ACTIVATE@"
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or exit 10
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# The sentinel and the tool variables must reach child processes.
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bash -c 'test -n "$__HERMES_ACTIVATED"'; or exit 11
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test (bash -c 'printf %s "$HERMES_PM_ACTIVATE_CANARY"') = env-ok; or exit 12
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# PYTHONPATH stays a list: the checkout first, then the selected environment.
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printf '%s\\n' $PYTHONPATH
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# Re-activating deactivates first, so one deactivate undoes everything.
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source "@ACTIVATE@"
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or exit 13
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deactivate
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test (string join : $PATH) = $original_path; or exit 20
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test "$PYTHONPATH" = caller-original; or exit 21
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test "$VIRTUAL_ENV" = caller-venv; or exit 22
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set -q __HERMES_ACTIVATED; and exit 23
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set -q HERMES_PM_ACTIVATE_CANARY; and exit 24
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functions -q deactivate; and exit 25
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functions -q hermes; and exit 26
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functions -q __hermes_saved_fish_prompt; and exit 27
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exit 0
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""", tmp_path)
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assert run.returncode == 0, run.stdout + run.stderr
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assert run.stdout.splitlines()[0] == str(root)
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assert "/first/venv/" in run.stdout.splitlines()[1]
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def test_setup_failure_leaves_the_caller_unchanged(tmp_path):
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root, env = sync_checkout(tmp_path)
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fake_store(tmp_path)
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(root / "fail").touch()
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run = _fish(root, env, """
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set -gx PYTHONPATH caller-path
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set -l before (env | sort | string collect)
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source "@ACTIVATE@"
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set -l code $status
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test $code -ne 0; or exit 10
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test (env | sort | string collect) = "$before"; or exit 11
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set -q __HERMES_ACTIVATED; and exit 12
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functions -q deactivate; and exit 13
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exit 0
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""", tmp_path)
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assert run.returncode == 0, run.stdout + run.stderr
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assert "setup failed" in run.stderr
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