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import ./make-test-python.nix ({ lib, pkgs, ... }:
{
name = "binary-cache";
meta.maintainers = with lib.maintainers; [ thomasjm ];
nodes.machine =
{ pkgs, ... }: {
imports = [ ../modules/installer/cd-dvd/channel.nix ];
environment.systemPackages = [ pkgs.python3 ];
system.extraDependencies = [ pkgs.hello.inputDerivation ];
nix.extraOptions = ''
experimental-features = nix-command
'';
};
testScript = ''
# Build the cache, then remove it from the store
cachePath = machine.succeed("nix-build --no-out-link -E 'with import <nixpkgs> {}; mkBinaryCache { rootPaths = [hello]; }'").strip()
machine.succeed("cp -r %s/. /tmp/cache" % cachePath)
machine.succeed("nix-store --delete " + cachePath)
# Sanity test of cache structure
status, stdout = machine.execute("ls /tmp/cache")
cache_files = stdout.split()
assert ("nix-cache-info" in cache_files)
assert ("nar" in cache_files)
# Nix store ping should work
machine.succeed("nix store ping --store file:///tmp/cache")
# Cache should contain a .narinfo referring to "hello"
grepLogs = machine.succeed("grep -l 'StorePath: /nix/store/[[:alnum:]]*-hello-.*' /tmp/cache/*.narinfo")
# Get the store path referenced by the .narinfo
narInfoFile = grepLogs.strip()
narInfoContents = machine.succeed("cat " + narInfoFile)
import re
match = re.match(r"^StorePath: (/nix/store/[a-z0-9]*-hello-.*)$", narInfoContents, re.MULTILINE)
if not match: raise Exception("Couldn't find hello store path in cache")
storePath = match[1]
# Delete the store path
machine.succeed("nix-store --delete " + storePath)
machine.succeed("[ ! -d %s ] || exit 1" % storePath)
# Should be able to build hello using the cache
logs = machine.succeed("nix-build -A hello '<nixpkgs>' --option require-sigs false --option trusted-substituters file:///tmp/cache --option substituters file:///tmp/cache 2>&1")
logLines = logs.split("\n")
if not "this path will be fetched" in logLines[0]: raise Exception("Unexpected first log line")
def shouldBe(got, desired):
if got != desired: raise Exception("Expected '%s' but got '%s'" % (desired, got))
shouldBe(logLines[1], " " + storePath)
shouldBe(logLines[2], "copying path '%s' from 'file:///tmp/cache'..." % storePath)
shouldBe(logLines[3], storePath)
# Store path should exist in the store now
machine.succeed("[ -d %s ] || exit 1" % storePath)
'';
})
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