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lix/tests/functional/fetchMercurial.sh
John Ericson 30dcc19d1f 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/
```

(cherry picked from commit 68c81c737571794f7246db53fb4774e94fcf4b7e)
2023-12-01 12:06:43 -05:00

107 lines
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source common.sh
[[ $(type -p hq) ]] || skipTest "Mercurial not installed"
clearStore
# Intentionally not in a canonical form
# See https://github.com/NixOS/nix/issues/6195
repo=$TEST_ROOT/./hg
rm -rf $repo ${repo}-tmp $TEST_HOME/.cache/nix
hg init $repo
echo '[ui]' >> $repo/.hg/hgrc
echo 'username = Foobar <foobar@example.org>' >> $repo/.hg/hgrc
# Set ui.tweakdefaults to ensure HGPLAIN is being set.
echo 'tweakdefaults = True' >> $repo/.hg/hgrc
echo utrecht > $repo/hello
touch $repo/.hgignore
hg add --cwd $repo hello .hgignore
hg commit --cwd $repo -m 'Bla1'
rev1=$(hg log --cwd $repo -r tip --template '{node}')
echo world > $repo/hello
hg commit --cwd $repo -m 'Bla2'
rev2=$(hg log --cwd $repo -r tip --template '{node}')
# Fetch an unclean branch.
echo unclean > $repo/hello
path=$(nix eval --impure --raw --expr "(builtins.fetchMercurial file://$repo).outPath")
[[ $(cat $path/hello) = unclean ]]
hg revert --cwd $repo --all
# Fetch the default branch.
path=$(nix eval --impure --raw --expr "(builtins.fetchMercurial file://$repo).outPath")
[[ $(cat $path/hello) = world ]]
# In pure eval mode, fetchGit without a revision should fail.
[[ $(nix eval --impure --raw --expr "(builtins.readFile (fetchMercurial file://$repo + \"/hello\"))") = world ]]
(! nix eval --raw --expr "builtins.readFile (fetchMercurial file://$repo + \"/hello\")")
# Fetch using an explicit revision hash.
path2=$(nix eval --impure --raw --expr "(builtins.fetchMercurial { url = file://$repo; rev = \"$rev2\"; }).outPath")
[[ $path = $path2 ]]
# In pure eval mode, fetchGit with a revision should succeed.
[[ $(nix eval --raw --expr "builtins.readFile (fetchMercurial { url = file://$repo; rev = \"$rev2\"; } + \"/hello\")") = world ]]
# Fetch again. This should be cached.
mv $repo ${repo}-tmp
path2=$(nix eval --impure --raw --expr "(builtins.fetchMercurial file://$repo).outPath")
[[ $path = $path2 ]]
[[ $(nix eval --impure --raw --expr "(builtins.fetchMercurial file://$repo).branch") = default ]]
[[ $(nix eval --impure --expr "(builtins.fetchMercurial file://$repo).revCount") = 1 ]]
[[ $(nix eval --impure --raw --expr "(builtins.fetchMercurial file://$repo).rev") = $rev2 ]]
# But with TTL 0, it should fail.
(! nix eval --impure --refresh --expr "builtins.fetchMercurial file://$repo")
# Fetching with a explicit hash should succeed.
path2=$(nix eval --refresh --raw --expr "(builtins.fetchMercurial { url = file://$repo; rev = \"$rev2\"; }).outPath")
[[ $path = $path2 ]]
path2=$(nix eval --refresh --raw --expr "(builtins.fetchMercurial { url = file://$repo; rev = \"$rev1\"; }).outPath")
[[ $(cat $path2/hello) = utrecht ]]
mv ${repo}-tmp $repo
# Using a clean working tree should produce the same result.
path2=$(nix eval --impure --raw --expr "(builtins.fetchMercurial $repo).outPath")
[[ $path = $path2 ]]
# Using an unclean tree should yield the tracked but uncommitted changes.
mkdir $repo/dir1 $repo/dir2
echo foo > $repo/dir1/foo
echo bar > $repo/bar
echo bar > $repo/dir2/bar
hg add --cwd $repo dir1/foo
hg rm --cwd $repo hello
path2=$(nix eval --impure --raw --expr "(builtins.fetchMercurial $repo).outPath")
[ ! -e $path2/hello ]
[ ! -e $path2/bar ]
[ ! -e $path2/dir2/bar ]
[ ! -e $path2/.hg ]
[[ $(cat $path2/dir1/foo) = foo ]]
[[ $(nix eval --impure --raw --expr "(builtins.fetchMercurial $repo).rev") = 0000000000000000000000000000000000000000 ]]
# ... unless we're using an explicit ref.
path3=$(nix eval --impure --raw --expr "(builtins.fetchMercurial { url = $repo; rev = \"default\"; }).outPath")
[[ $path = $path3 ]]
# Committing should not affect the store path.
hg commit --cwd $repo -m 'Bla3'
path4=$(nix eval --impure --refresh --raw --expr "(builtins.fetchMercurial file://$repo).outPath")
[[ $path2 = $path4 ]]
echo paris > $repo/hello
# Passing a `name` argument should be reflected in the output path
path5=$(nix eval -vvvvv --impure --refresh --raw --expr "(builtins.fetchMercurial { url = \"file://$repo\"; name = \"foo\"; } ).outPath")
[[ $path5 =~ -foo$ ]]