nix-super/tests/nixos/fetch-git/default.nix
DavHau 813c113b9e initialize test suite for git fetchers
solves #9388

This utilizes nixos vm tests to allow:
- writing tests for fetchTree and fetchGit involving actual networking.
- writing small independent test cases by automating local and remote repository setup per test case.

This adds:
  - a gitea module setting up a gitea server
  - a setup module that simplifies writing test cases by automating the repo setup.
  - a simple git http test case

Other improvements:
For all nixos tests, add capability of overriding the nix version to test against.
This should make it easier to prevent regressions. If a new test is added it can simply be ran against any older nix version without having to backport the test.
For example, for running the container tests against nix 2.12.0:
`nix build "$(nix eval --raw .#hydraJobs.tests.containers --impure --apply 't: (t.forNix "2.12.0").drvPath')^*" -L`
2024-01-11 14:44:00 +07:00

60 lines
1.6 KiB
Nix

{ lib, config, ... }:
{
name = "fetch-git";
imports = [
./testsupport/gitea.nix
];
/*
Test cases
The following is set up automatically for each test case:
- a repo with the {name} is created on the gitea server
- a repo with the {name} is created on the client
- the client repo is configured to push to the server repo
Python variables:
- repo.path: the path to the directory of the client repo
- repo.git: the git command with the client repo as the working directory
- repo.remote: the url to the server repo
*/
testCases = [
{
name = "simple-http";
description = "can fetch a git repo via http";
script = ''
# add a file to the repo
client.succeed(f"""
echo chiang-mai > {repo.path}/thailand \
&& {repo.git} add thailand \
&& {repo.git} commit -m 'commit1'
""")
# memoize the revision
rev1 = client.succeed(f"""
{repo.git} rev-parse HEAD
""").strip()
# push to the server
client.succeed(f"""
{repo.git} push origin main
""")
# fetch the repo via nix
fetched1 = client.succeed(f"""
nix eval --impure --raw --expr "(builtins.fetchGit {repo.remote}).outPath"
""")
# check if the committed file is there
client.succeed(f"""
test -f {fetched1}/thailand
""")
# check if the revision is the same
rev1_fetched = client.succeed(f"""
nix eval --impure --raw --expr "(builtins.fetchGit {repo.remote}).rev"
""").strip()
assert rev1 == rev1_fetched
'';
}
];
}