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"""Unit tests for the E2E harness's pinned CLI preparation."""

from __future__ import annotations

import pytest

from copilot import CopilotClient, RuntimeConnection

from e2e import conftest

from e2e.testharness import context

class TestGetCliPathForTests:

def test_env_var_takes_precedence(self, tmp_path, monkeypatch):

cli = tmp_path / "custom-cli.js"

cli.write_text("// custom entrypoint\n")

monkeypatch.setenv("COPILOT_CLI_PATH", str(cli))

assert context.get_cli_path_for_tests() == str(cli.resolve())

def test_prepares_the_pinned_runtime(self, tmp_path, monkeypatch):

monkeypatch.delenv("COPILOT_CLI_PATH", raising=False)

cli = tmp_path / "copilot"

cli.write_text("runtime\n")

class Result:

returncode = 0

stdout = f"{cli}\n"

stderr = ""

monkeypatch.setattr(context.subprocess, "run", lambda *args, **kwargs: Result())

assert context._prepare_pinned_cli(tmp_path) == str(cli.resolve())

def test_preparation_failure_includes_command_error(self, tmp_path, monkeypatch):

class Result:

returncode = 1

stdout = ""

stderr = "download failed"

monkeypatch.setattr(context.subprocess, "run", lambda *args, **kwargs: Result())

with pytest.raises(RuntimeError) as excinfo:

context._prepare_pinned_cli(tmp_path)

assert "download failed" in str(excinfo.value)

def test_runtime_checkout_requires_selected_cli_without_preparing_published(self, monkeypatch):

monkeypatch.delenv("COPILOT_CLI_PATH", raising=False)

monkeypatch.setenv("COPILOT_RUNTIME_SOURCE", "checkout")

monkeypatch.setattr(

context,

"_prepare_pinned_cli",

lambda *_args: pytest.fail("published preparation must not run"),

)

with pytest.raises(RuntimeError, match="COPILOT_CLI_PATH"):

context.get_cli_path_for_tests()

def test_inprocess_environment_reuses_prepared_runtime(tmp_path, monkeypatch):

cli = tmp_path / "copilot-runtime"

cli.write_text("runtime\n")

test_context = context.E2ETestContext()

test_context.cli_path = str(cli)

test_context.work_dir = str(tmp_path)

monkeypatch.setattr(test_context, "get_env", lambda: {"HTTPS_PROXY": "https://proxy"})

monkeypatch.delenv("COPILOT_CLI_PATH", raising=False)

try:

test_context._apply_inprocess_environment()

assert context.os.environ["COPILOT_CLI_PATH"] == str(cli)

finally:

test_context._restore_inprocess_environment()

@pytest.mark.parametrize("skip_download", ["1", "true", "yes"])

def test_inprocess_collection_preserves_offline_runtime_override(

tmp_path, monkeypatch, skip_download

):

cli = tmp_path / "copilot-runtime"

cli.write_text("runtime\n")

runtime = tmp_path / "runtime.node"

runtime.write_text("native runtime\n")

monkeypatch.setenv("COPILOT_CLI_PATH", str(cli))

monkeypatch.setenv("COPILOT_SKIP_CLI_DOWNLOAD", skip_download)

monkeypatch.setenv("COPILOT_HMAC_KEY", "secret")

monkeypatch.setenv("CAPI_HMAC_KEY", "secret")

conftest._neutralize_inprocess_environment()

assert context.get_cli_path_for_tests() == str(cli.resolve())

client = CopilotClient(connection=RuntimeConnection.for_inprocess())

assert client._inprocess_runtime_path == str(runtime)

assert client._cli_path_source == "environment"

assert "COPILOT_HMAC_KEY" not in context.os.environ

assert "CAPI_HMAC_KEY" not in context.os.environ

def test_inprocess_collection_rejects_incomplete_offline_runtime(tmp_path, monkeypatch):

cli = tmp_path / "copilot-runtime"

cli.write_text("runtime\n")

monkeypatch.setenv("COPILOT_CLI_PATH", str(cli))

monkeypatch.setenv("COPILOT_SKIP_CLI_DOWNLOAD", "1")

conftest._neutralize_inprocess_environment()

with pytest.raises(RuntimeError, match="In-process runtime library not found next to"):

CopilotClient(connection=RuntimeConnection.for_inprocess())

def test_inprocess_collection_keeps_public_runtime_selection_behavior(tmp_path, monkeypatch):

cli = tmp_path / "copilot-runtime"

cli.write_text("runtime\n")

monkeypatch.setenv("COPILOT_CLI_PATH", str(cli))

monkeypatch.delenv("COPILOT_SKIP_CLI_DOWNLOAD", raising=False)

conftest._neutralize_inprocess_environment()

assert "COPILOT_CLI_PATH" not in context.os.environ