lix/tests/functional/flakes/circular.sh
John Ericson 68c81c7375 Put functional tests in tests/functional
I think it is bad for these reasons when `tests/` contains a mix of
functional and integration tests

 - Concepts is harder to understand, the documentation makes a good
   unit vs functional vs integration distinction, but when the
   integration tests are just two subdirs within `tests/` this is not
   clear.

 - Source filtering in the `flake.nix` is more complex. We need to
   filter out some of the dirs from `tests/`, rather than simply pick
   the dirs we want and take all of them. This is a good sign the
   structure of what we are trying to do is not matching the structure
   of the files.

With this change we have a clean:
```shell-session
$ git show 'HEAD:tests'
tree HEAD:tests

functional/
installer/
nixos/
```
2023-10-06 09:05:56 -04:00

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# Test circular flake dependencies.
source ./common.sh
requireGit
flakeA=$TEST_ROOT/flakeA
flakeB=$TEST_ROOT/flakeB
createGitRepo $flakeA
createGitRepo $flakeB
cat > $flakeA/flake.nix <<EOF
{
inputs.b.url = git+file://$flakeB;
inputs.b.inputs.a.follows = "/";
outputs = { self, b }: {
foo = 123 + b.bar;
xyzzy = 1000;
};
}
EOF
git -C $flakeA add flake.nix
cat > $flakeB/flake.nix <<EOF
{
inputs.a.url = git+file://$flakeA;
outputs = { self, a }: {
bar = 456 + a.xyzzy;
};
}
EOF
git -C $flakeB add flake.nix
git -C $flakeB commit -a -m 'Foo'
[[ $(nix eval $flakeA#foo) = 1579 ]]
[[ $(nix eval $flakeA#foo) = 1579 ]]
sed -i $flakeB/flake.nix -e 's/456/789/'
git -C $flakeB commit -a -m 'Foo'
[[ $(nix eval --update-input b $flakeA#foo) = 1912 ]]
# Test list-inputs with circular dependencies
nix flake metadata $flakeA