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from testlib.fixtures.nix import Nix
from testlib.fixtures.git import Git
from testlib.fixtures.file_helper import with_files, File
from testlib.environ import environ
from testlib.utils import get_global_asset_pack, get_global_asset
from pathlib import Path
import pytest
system = environ.get("system")
files = {
"templates": get_global_asset_pack(".git")
| {
"flake.nix": File("""{
description = "Some templates";
outputs = { self }: {
templates = rec {
trivial = {
path = ./trivial;
description = "A trivial flake";
welcomeText = ''
Welcome to my trivial flake
'';
};
default = trivial;
};
};
}"""),
"trivial": {
"flake.nix": File(f"""{{
description = "A flake for building Hello World";
outputs = {{ self, nixpkgs }}: {{
packages.{system} = rec {{
hello = nixpkgs.legacyPackages.{system}.hello;
default = hello;
}};
}};
}}"""),
"a": File("a"),
"b": File("b"),
},
},
"flake": get_global_asset_pack(".git"),
"nixpkgs": get_global_asset_pack(".git")
| {
"config.nix": get_global_asset("config.nix"),
"flake.nix": File(f"""{{
outputs = {{ self }}: {{
legacyPackages.{system}.hello =
with import ./config.nix;
mkDerivation {{
name = "hello";
buildCommand = "echo hello > $out";
}};
}};
}}"""),
},
"registry.json": File(""),
}
@pytest.fixture(autouse=True)
def common_init(nix: Nix, files: Path, git: Git):
nix.settings.add_xp_feature("nix-command", "flakes")
nix.settings["flake-registry"] = str(files / "registry.json")
git(files / "templates", "add", "flake.nix", "trivial/")
git(files / "templates", "commit", "-m", "Initial")
git(files / "nixpkgs", "add", "flake.nix", "config.nix")
nix.nix(
[
"registry",
"add",
"--registry",
files / "registry.json",
"templates",
f"git+file://{files}/templates",
]
).run().ok()
nix.nix(
[
"registry",
"add",
"--registry",
files / "registry.json",
"nixpkgs",
f"git+file://{files}/nixpkgs",
]
).run().ok()
@with_files(files)
class TestFlakeTemplates:
def test_check(self, nix: Nix, files: Path):
assert (
"checking template 'templates.trivial'"
in nix.nix(["flake", "check", files / "templates"]).run().ok().stderr_s
)
def test_show(self, nix: Nix, files: Path):
assert (
"A trivial flake" in nix.nix(["flake", "show", files / "templates"]).run().ok().stdout_s
)
def test_show_json(self, nix: Nix, files: Path):
result = nix.nix(["flake", "show", files / "templates", "--json"]).run().json()
assert result["templates"]["default"]["description"] == "A trivial flake"
def test_init(self, nix: Nix, files: Path):
stderr = nix.nix(["flake", "init"], cwd=files / "flake").run().ok().stderr_s
assert f"wrote: {files}/flake/flake.nix" in stderr
class TestWithInit:
@pytest.fixture(autouse=True)
def init_flake(self, nix: Nix, files: Path):
nix.nix(["flake", "init"], cwd=files / "flake").run().ok()
def test_init_idempotent(self, nix: Nix, files: Path):
stderr = nix.nix(["flake", "init"], cwd=files / "flake").run().ok().stderr_s
assert "skipping identical file" in stderr
class TestInRepo:
@pytest.fixture(autouse=True)
def init_repo(self, files: Path, git: Git):
git(files / "flake", "add", "flake.nix")
def test_check(self, nix: Nix, files: Path):
stderr = nix.nix(["flake", "check", files / "flake"]).run().ok().stderr_s
assert f"fetching git input 'git+file://{files}/flake'" in stderr
assert f"fetching git input 'git+file://{files}/nixpkgs'" in stderr
assert "evaluating flake" in stderr
def test_show(self, nix: Nix, files: Path):
stdout = nix.nix(["flake", "show", files / "flake"]).run().ok().stdout_s
assert "hello: package 'hello'" in stdout
def test_show_json(self, nix: Nix, files: Path):
result = nix.nix(["flake", "show", files / "flake", "--json"]).run().json()
assert result["packages"][system]["default"]["name"] == "hello"
assert result["packages"][system]["hello"]["name"] == "hello"
def test_benign_conflict_idempotence(self, nix: Nix, files: Path):
(files / "flake/a").write_text("a")
stderr = nix.nix(["flake", "init"], cwd=files / "flake").run().ok().stderr_s
assert "skipping identical file" in stderr
assert f"wrote: {files}/flake/flake.nix" in stderr
def test_init_conflict(self, nix: Nix, files: Path):
(files / "flake/a").write_text("b")
stderr = nix.nix(["flake", "init"], cwd=files / "flake").run().expect(1).stderr_s
assert f"refusing to overwrite existing file '{files}/flake/a'" in stderr
def test_new(self, nix: Nix):
stderr = nix.nix(["flake", "new", "-t", "templates#trivial", "flake2"]).run().ok().stderr_s
assert f"wrote: {nix.env.dirs.home}/flake2/flake.nix" in stderr
class TestNew:
def test_idempotent(self, nix: Nix, files: Path):
nix.nix(["flake", "new", "-t", "templates#trivial", files / "flake2"]).run().ok()
stderr = (
nix.nix(["flake", "new", "-t", "templates#trivial", files / "flake2"])
.run()
.ok()
.stderr_s
)
assert "skipping identical file" in stderr
def test_check(self, nix: Nix, files: Path):
nix.nix(["flake", "new", "-t", "templates#trivial", files / "flake2"]).run().ok()
stderr = nix.nix(["flake", "check", files / "flake2"]).run().ok().stderr_s
assert "evaluating flake" in stderr
|