WIP

tests/test_check_sisyphus_set_relations.py

@@ -0,0 +1,132 @@
+from __future__ import annotations
+
+import os
+import subprocess
+from pathlib import Path
+
+
+REPO_ROOT = Path(__file__).resolve().parents[1]
+SCRIPT = REPO_ROOT / "scripts" / "check_sisyphus_set_relations.sh"
+PROVIDER_SET = "set:jg2ZwFjdTD2B0"
+REQUIRED_SET = "set:jiXMb"
+
+
+def run_with_metadata(
+    tmp_path: Path, metadata: str, *, locale: str | None = None
+) -> subprocess.CompletedProcess[str]:
+    fake_bin = tmp_path / "bin"
+    fake_bin.mkdir()
+    metadata_file = tmp_path / "available.txt"
+    metadata_file.write_text(metadata, encoding="utf-8")
+
+    (fake_bin / "apt-get").write_text(
+        """#!/bin/sh
+archive=
+for argument in "$@"; do
+    case $argument in
+        Dir::Cache::archives=*) archive=${argument#*=} ;;
+    esac
+done
+[ -n "$archive" ] && [ -d "$archive/partial" ]
+""",
+        encoding="utf-8",
+    )
+    (fake_bin / "apt-cache").write_text(
+        '#!/bin/sh\ncat "$FAKE_APT_DUMP"\n', encoding="utf-8"
+    )
+    (fake_bin / "apt-get").chmod(0o755)
+    (fake_bin / "apt-cache").chmod(0o755)
+
+    environment = os.environ.copy()
+    environment["PATH"] = f"{fake_bin}:{environment['PATH']}"
+    environment["FAKE_APT_DUMP"] = str(metadata_file)
+    if locale is not None:
+        environment["LC_ALL"] = locale
+    return subprocess.run(
+        ["bash", str(SCRIPT)],
+        cwd=REPO_ROOT,
+        text=True,
+        capture_output=True,
+        env=environment,
+    )
+
+
+def test_accepts_a_real_provider_subset_relation_and_continuation_line(tmp_path: Path) -> None:
+    metadata = f"""\
+Package: libexample
+Provides: libexample.so.1()(64bit) (= {PROVIDER_SET})
+
+Package: example
+Depends: plain-dependency,
+ libexample.so.1()(64bit) (>= {REQUIRED_SET})
+
+"""
+
+    completed = run_with_metadata(tmp_path, metadata)
+
+    assert completed.returncode == 0, completed.stderr
+    assert "requirements: 1" in completed.stdout
+    assert "compatible:   1" in completed.stdout
+    assert "incompatible: 0" in completed.stdout
+
+
+def test_rejects_a_provider_that_does_not_contain_the_required_set(tmp_path: Path) -> None:
+    metadata = f"""\
+Package: libexample
+Provides: libexample.so.1()(64bit) (= {REQUIRED_SET})
+
+Package: example
+Depends: libexample.so.1()(64bit) (>= {PROVIDER_SET})
+
+"""
+
+    completed = run_with_metadata(tmp_path, metadata)
+
+    assert completed.returncode == 1
+    assert "requirements: 1" in completed.stdout
+    assert "compatible:   0" in completed.stdout
+    assert "incompatible: 1" in completed.stdout
+    assert "example" in completed.stdout
+
+
+def test_uses_one_collation_order_for_sort_and_join(tmp_path: Path) -> None:
+    metadata = f"""\
+Package: userdb-provider
+Provides: /usr/lib64/courier-authlib/libauthuserdb.so.0()(64bit) (= {PROVIDER_SET})
+
+Package: auth-provider
+Provides: /usr/lib64/courier-authlib/libcourierauth.so.0()(64bit) (= {PROVIDER_SET})
+
+Package: auth-consumer
+Depends: /usr/lib64/courier-authlib/libcourierauth.so.0()(64bit) (>= {REQUIRED_SET})
+
+Package: common-consumer
+Depends: /usr/lib64/courier-authlib/libcourierauthcommon.so.0()(64bit) (>= {REQUIRED_SET})
+
+"""
+
+    completed = run_with_metadata(tmp_path, metadata, locale="ru_RU.utf8")
+
+    assert completed.returncode == 1
+    assert "is not sorted" not in completed.stderr
+    assert "requirements: 2" in completed.stdout
+    assert "compatible:   1" in completed.stdout
+    assert "no provider:  1" in completed.stdout
+
+
+def test_large_set_is_not_passed_as_a_command_line_argument(tmp_path: Path) -> None:
+    oversized_set = "set:" + "a" * 140_000
+    metadata = f"""\
+Package: libexample
+Provides: libexample.so.1()(64bit) (= {oversized_set})
+
+Package: example
+Depends: libexample.so.1()(64bit) (>= {REQUIRED_SET})
+
+"""
+
+    completed = run_with_metadata(tmp_path, metadata)
+
+    assert completed.returncode == 1
+    assert "Argument list too long" not in completed.stderr
+    assert "decode errors:1" in completed.stdout