Alois Wohlschlager
54fac65fca
The Mercurial fetcher previously used the revision number supplied by Mercurial as its revision count. This is inappropriate, as the revision number is incremented each time a change is added to the local repository, so also changes only reachable from other heads will be counted. For the same reason, it will also depend on whether such changes have been fetched before from the same repository, introducing an impurity. Instead the revisions have to be counted explicitly, similar to the Git fetcher. Change-Id: Idb1e66ae2fb8b05101116c815f453efd6e95b09e
107 lines
4.0 KiB
Bash
107 lines
4.0 KiB
Bash
source common.sh
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[[ $(type -p hg) ]] || skipTest "Mercurial not installed"
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clearStore
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# Intentionally not in a canonical form
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# See https://github.com/NixOS/nix/issues/6195
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repo=$TEST_ROOT/./hg
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rm -rf $repo ${repo}-tmp $TEST_HOME/.cache/nix
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hg init $repo
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echo '[ui]' >> $repo/.hg/hgrc
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echo 'username = Foobar <foobar@example.org>' >> $repo/.hg/hgrc
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# Set ui.tweakdefaults to ensure HGPLAIN is being set.
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echo 'tweakdefaults = True' >> $repo/.hg/hgrc
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echo utrecht > $repo/hello
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touch $repo/.hgignore
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hg add --cwd $repo hello .hgignore
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hg commit --cwd $repo -m 'Bla1'
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rev1=$(hg log --cwd $repo -r tip --template '{node}')
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echo world > $repo/hello
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hg commit --cwd $repo -m 'Bla2'
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rev2=$(hg log --cwd $repo -r tip --template '{node}')
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# Fetch an unclean branch.
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echo unclean > $repo/hello
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path=$(nix eval --impure --raw --expr "(builtins.fetchMercurial \"file://$repo\").outPath")
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[[ $(cat $path/hello) = unclean ]]
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hg revert --cwd $repo --all
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# Fetch the default branch.
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path=$(nix eval --impure --raw --expr "(builtins.fetchMercurial \"file://$repo\").outPath")
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[[ $(cat $path/hello) = world ]]
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# In pure eval mode, fetchGit without a revision should fail.
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[[ $(nix eval --impure --raw --expr "(builtins.readFile (fetchMercurial \"file://$repo\" + \"/hello\"))") = world ]]
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(! nix eval --raw --expr "builtins.readFile (fetchMercurial \"file://$repo\" + \"/hello\")")
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# Fetch using an explicit revision hash.
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path2=$(nix eval --impure --raw --expr "(builtins.fetchMercurial { url = \"file://$repo\"; rev = \"$rev2\"; }).outPath")
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[[ $path = $path2 ]]
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# In pure eval mode, fetchGit with a revision should succeed.
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[[ $(nix eval --raw --expr "builtins.readFile (fetchMercurial { url = \"file://$repo\"; rev = \"$rev2\"; } + \"/hello\")") = world ]]
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# Fetch again. This should be cached.
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mv $repo ${repo}-tmp
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path2=$(nix eval --impure --raw --expr "(builtins.fetchMercurial \"file://$repo\").outPath")
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[[ $path = $path2 ]]
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[[ $(nix eval --impure --raw --expr "(builtins.fetchMercurial \"file://$repo\").branch") = default ]]
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[[ $(nix eval --impure --expr "(builtins.fetchMercurial \"file://$repo\").revCount") = 2 ]]
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[[ $(nix eval --impure --raw --expr "(builtins.fetchMercurial \"file://$repo\").rev") = $rev2 ]]
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# But with TTL 0, it should fail.
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(! nix eval --impure --refresh --expr "builtins.fetchMercurial \"file://$repo\"")
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# Fetching with a explicit hash should succeed.
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path2=$(nix eval --refresh --raw --expr "(builtins.fetchMercurial { url = \"file://$repo\"; rev = \"$rev2\"; }).outPath")
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[[ $path = $path2 ]]
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path2=$(nix eval --refresh --raw --expr "(builtins.fetchMercurial { url = \"file://$repo\"; rev = \"$rev1\"; }).outPath")
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[[ $(cat $path2/hello) = utrecht ]]
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mv ${repo}-tmp $repo
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# Using a clean working tree should produce the same result.
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path2=$(nix eval --impure --raw --expr "(builtins.fetchMercurial \"$repo\").outPath")
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[[ $path = $path2 ]]
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# Using an unclean tree should yield the tracked but uncommitted changes.
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mkdir $repo/dir1 $repo/dir2
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echo foo > $repo/dir1/foo
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echo bar > $repo/bar
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echo bar > $repo/dir2/bar
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hg add --cwd $repo dir1/foo
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hg rm --cwd $repo hello
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path2=$(nix eval --impure --raw --expr "(builtins.fetchMercurial \"$repo\").outPath")
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[ ! -e $path2/hello ]
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[ ! -e $path2/bar ]
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[ ! -e $path2/dir2/bar ]
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[ ! -e $path2/.hg ]
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[[ $(cat $path2/dir1/foo) = foo ]]
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[[ $(nix eval --impure --raw --expr "(builtins.fetchMercurial \"$repo\").rev") = 0000000000000000000000000000000000000000 ]]
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# ... unless we're using an explicit ref.
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path3=$(nix eval --impure --raw --expr "(builtins.fetchMercurial { url = \"$repo\"; rev = \"default\"; }).outPath")
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[[ $path = $path3 ]]
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# Committing should not affect the store path.
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hg commit --cwd $repo -m 'Bla3'
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path4=$(nix eval --impure --refresh --raw --expr "(builtins.fetchMercurial \"file://$repo\").outPath")
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[[ $path2 = $path4 ]]
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echo paris > $repo/hello
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# Passing a `name` argument should be reflected in the output path
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path5=$(nix eval -vvvvv --impure --refresh --raw --expr "(builtins.fetchMercurial { url = \"file://$repo\"; name = \"foo\"; } ).outPath")
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[[ $path5 =~ -foo$ ]]
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