def test_can_evaluate_expression_of_fetched_file(logger: Logger,
nix: Nix) -> None:
test_file = UrlTextFile(
url=
"https://raw.githubusercontent.com/nix-community/pypi2nix/6fe6265b62b53377b4677a39c6ee48550c1f2186/.gitignore",
logger=logger,
name="testname",
)
nix.build_expression(
expression=
f"let pkgs = import <nixpkgs> {{}}; in {test_file.nix_expression() }")
def test_fetch_content_equals_file_content_from_nix_expression(
network_file: NetworkFile, nix: Nix):
fetch_content = network_file.fetch()
nix_expression = "with builtins;"
nix_expression += "let pkgs = import <nixpkgs> {};"
nix_expression += f"fileContent = readFile ({network_file.nix_expression()});"
nix_expression += " in "
nix_expression += 'pkgs.writeTextFile { name = "test"; text = fileContent; }'
with tempfile.TemporaryDirectory() as target_directory:
target_file = os.path.join(target_directory, "result")
nix.build_expression(nix_expression, out_link=target_file)
with open(target_file) as f:
nix_content = f.read()
assert nix_content == fetch_content
