Nix/tests/functional/ca/derivation-json.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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source common.sh
export NIX_TESTS_CA_BY_DEFAULT=1
drvPath=$(nix-instantiate ../simple.nix)
nix derivation show $drvPath | jq .[] > $TEST_HOME/simple.json
drvPath2=$(nix derivation add < $TEST_HOME/simple.json)
[[ "$drvPath" = "$drvPath2" ]]
# Content-addressed derivations can be renamed.
jq '.name = "foo"' < $TEST_HOME/simple.json > $TEST_HOME/foo.json
drvPath3=$(nix derivation add --dry-run < $TEST_HOME/foo.json)
# With --dry-run nothing is actually written
[[ ! -e "$drvPath3" ]]
# But the JSON is rejected without the experimental feature
expectStderr 1 nix derivation add < $TEST_HOME/foo.json --experimental-features nix-command | grepQuiet "experimental Nix feature 'ca-derivations' is disabled"
# Without --dry-run it is actually written
drvPath4=$(nix derivation add < $TEST_HOME/foo.json)
[[ "$drvPath4" = "$drvPath3" ]]
[[ -e "$drvPath3" ]]
# The modified derivation read back as JSON matches
nix derivation show $drvPath3 | jq .[] > $TEST_HOME/foo-read.json
diff $TEST_HOME/foo.json $TEST_HOME/foo-read.json