pip lock: add basic test

Author: sbidoul

tests/functional/test_lock.py

@@ -0,0 +1,39 @@
+import sys
+from pathlib import Path
+
+from pip._internal.utils.urls import path_to_url
+
+from ..lib import PipTestEnvironment, TestData
+
+if sys.version_info >= (3, 11):
+    import tomllib
+else:
+    from pip._vendor import tomli as tomllib
+
+
+def test_lock_basic(
+    script: PipTestEnvironment, shared_data: TestData, tmp_path: Path
+) -> None:
+    result = script.pip(
+        "lock",
+        "simplewheel",
+        "--no-index",
+        "--find-links",
+        str(shared_data.root / "packages/"),
+        expect_stderr=True,  # for the experimental warning
+    )
+    result.did_create(Path("scratch") / "pylock.toml")
+    pylock = tomllib.loads(script.scratch_path.joinpath("pylock.toml").read_text())
+    assert pylock["lock-version"] == "1.0"
+    assert pylock["created-by"] == "pip"
+    assert len(pylock["packages"]) == 1
+    package = pylock["packages"][0]
+    assert package["name"] == "simplewheel"
+    assert package["version"] == "2.0"
+    assert package["wheels"][0]["name"] == "simplewheel-2.0-1-py2.py3-none-any.whl"
+    assert package["wheels"][0]["url"] == path_to_url(
+        str(shared_data.root / "packages/simplewheel-2.0-1-py2.py3-none-any.whl")
+    )
+    assert package["wheels"][0]["hashes"]["sha256"] == (
+        "71e1ca6b16ae3382a698c284013f66504f2581099b2ce4801f60e9536236ceee"
+    )