173 lines
7.5 KiB
Bash
173 lines
7.5 KiB
Bash
source common.sh
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set -u
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requireGit
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clearStore
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rootRepo=$TEST_ROOT/gitSubmodulesRoot
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subRepo=$TEST_ROOT/gitSubmodulesSub
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rm -rf ${rootRepo} ${subRepo} $TEST_HOME/.cache/nix
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# Submodules can't be fetched locally by default, which can cause
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# information leakage vulnerabilities, but for these tests our
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# submodule is intentionally local and it's all trusted, so we
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# disable this restriction. Setting it per repo is not sufficient, as
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# the repo-local config does not apply to the commands run from
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# outside the repos by Nix.
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export XDG_CONFIG_HOME=$TEST_HOME/.config
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git config --global protocol.file.allow always
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initGitRepo() {
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git init $1
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git -C $1 config user.email "foobar@example.com"
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git -C $1 config user.name "Foobar"
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}
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addGitContent() {
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echo "lorem ipsum" > $1/content
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git -C $1 add content
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git -C $1 commit -m "Initial commit"
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}
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initGitRepo $subRepo
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addGitContent $subRepo
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initGitRepo $rootRepo
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git -C $rootRepo submodule init
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git -C $rootRepo submodule add $subRepo sub
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git -C $rootRepo add sub
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git -C $rootRepo commit -m "Add submodule"
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rev=$(git -C $rootRepo rev-parse HEAD)
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r1=$(nix eval --raw --expr "(builtins.fetchGit { url = file://$rootRepo; rev = \"$rev\"; }).outPath")
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r2=$(nix eval --raw --expr "(builtins.fetchGit { url = file://$rootRepo; rev = \"$rev\"; submodules = false; }).outPath")
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r3=$(nix eval --raw --expr "(builtins.fetchGit { url = file://$rootRepo; rev = \"$rev\"; submodules = true; }).outPath")
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[[ $r1 == $r2 ]]
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[[ $r2 != $r3 ]]
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r4=$(nix eval --raw --expr "(builtins.fetchGit { url = file://$rootRepo; ref = \"master\"; rev = \"$rev\"; }).outPath")
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r5=$(nix eval --raw --expr "(builtins.fetchGit { url = file://$rootRepo; ref = \"master\"; rev = \"$rev\"; submodules = false; }).outPath")
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r6=$(nix eval --raw --expr "(builtins.fetchGit { url = file://$rootRepo; ref = \"master\"; rev = \"$rev\"; submodules = true; }).outPath")
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r7=$(nix eval --raw --expr "(builtins.fetchGit { url = $rootRepo; ref = \"master\"; rev = \"$rev\"; submodules = true; }).outPath")
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r8=$(nix eval --raw --expr "(builtins.fetchGit { url = $rootRepo; rev = \"$rev\"; submodules = true; }).outPath")
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[[ $r1 == $r4 ]]
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[[ $r4 == $r5 ]]
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[[ $r3 == $r6 ]]
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[[ $r6 == $r7 ]]
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[[ $r7 == $r8 ]]
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have_submodules=$(nix eval --expr "(builtins.fetchGit { url = $rootRepo; rev = \"$rev\"; }).submodules")
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[[ $have_submodules == false ]]
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have_submodules=$(nix eval --expr "(builtins.fetchGit { url = $rootRepo; rev = \"$rev\"; submodules = false; }).submodules")
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[[ $have_submodules == false ]]
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have_submodules=$(nix eval --expr "(builtins.fetchGit { url = $rootRepo; rev = \"$rev\"; submodules = true; }).submodules")
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[[ $have_submodules == true ]]
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pathWithoutSubmodules=$(nix eval --raw --expr "(builtins.fetchGit { url = file://$rootRepo; rev = \"$rev\"; }).outPath")
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pathWithSubmodules=$(nix eval --raw --expr "(builtins.fetchGit { url = file://$rootRepo; rev = \"$rev\"; submodules = true; }).outPath")
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pathWithSubmodulesAgain=$(nix eval --raw --expr "(builtins.fetchGit { url = file://$rootRepo; rev = \"$rev\"; submodules = true; }).outPath")
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pathWithSubmodulesAgainWithRef=$(nix eval --raw --expr "(builtins.fetchGit { url = file://$rootRepo; ref = \"master\"; rev = \"$rev\"; submodules = true; }).outPath")
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# The resulting store path cannot be the same.
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[[ $pathWithoutSubmodules != $pathWithSubmodules ]]
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# Checking out the same repo with submodules returns in the same store path.
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[[ $pathWithSubmodules == $pathWithSubmodulesAgain ]]
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# Checking out the same repo with submodules returns in the same store path.
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[[ $pathWithSubmodulesAgain == $pathWithSubmodulesAgainWithRef ]]
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# The submodules flag is actually honored.
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[[ ! -e $pathWithoutSubmodules/sub/content ]]
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[[ -e $pathWithSubmodules/sub/content ]]
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[[ -e $pathWithSubmodulesAgainWithRef/sub/content ]]
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# No .git directory or submodule reference files must be left
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test "$(find "$pathWithSubmodules" -name .git)" = ""
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# Git repos without submodules can be fetched with submodules = true.
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subRev=$(git -C $subRepo rev-parse HEAD)
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noSubmoduleRepoBaseline=$(nix eval --raw --expr "(builtins.fetchGit { url = file://$subRepo; rev = \"$subRev\"; }).outPath")
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noSubmoduleRepo=$(nix eval --raw --expr "(builtins.fetchGit { url = file://$subRepo; rev = \"$subRev\"; submodules = true; }).outPath")
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[[ $noSubmoduleRepoBaseline == $noSubmoduleRepo ]]
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# Test relative submodule URLs.
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rm $TEST_HOME/.cache/nix/fetcher-cache*
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rm -rf $rootRepo/.git $rootRepo/.gitmodules $rootRepo/sub
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initGitRepo $rootRepo
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git -C $rootRepo submodule add ../gitSubmodulesSub sub
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git -C $rootRepo commit -m "Add submodule"
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rev2=$(git -C $rootRepo rev-parse HEAD)
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pathWithRelative=$(nix eval --raw --expr "(builtins.fetchGit { url = file://$rootRepo; rev = \"$rev2\"; submodules = true; }).outPath")
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diff -r -x .gitmodules $pathWithSubmodules $pathWithRelative
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# Test clones that have an upstream with relative submodule URLs.
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rm $TEST_HOME/.cache/nix/fetcher-cache*
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cloneRepo=$TEST_ROOT/a/b/gitSubmodulesClone # NB /a/b to make the relative path not work relative to $cloneRepo
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git clone $rootRepo $cloneRepo
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pathIndirect=$(nix eval --raw --expr "(builtins.fetchGit { url = file://$cloneRepo; rev = \"$rev2\"; submodules = true; }).outPath")
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[[ $pathIndirect = $pathWithRelative ]]
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# Test submodule export-ignore interaction
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git -C $rootRepo/sub config user.email "foobar@example.com"
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git -C $rootRepo/sub config user.name "Foobar"
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echo "/exclude-from-root export-ignore" >> $rootRepo/.gitattributes
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# TBD possible semantics for submodules + exportIgnore
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# echo "/sub/exclude-deep export-ignore" >> $rootRepo/.gitattributes
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echo nope > $rootRepo/exclude-from-root
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git -C $rootRepo add .gitattributes exclude-from-root
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git -C $rootRepo commit -m "Add export-ignore"
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echo "/exclude-from-sub export-ignore" >> $rootRepo/sub/.gitattributes
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echo nope > $rootRepo/sub/exclude-from-sub
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# TBD possible semantics for submodules + exportIgnore
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# echo aye > $rootRepo/sub/exclude-from-root
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git -C $rootRepo/sub add .gitattributes exclude-from-sub
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git -C $rootRepo/sub commit -m "Add export-ignore (sub)"
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git -C $rootRepo add sub
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git -C $rootRepo commit -m "Update submodule"
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git -C $rootRepo status
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# # TBD: not supported yet, because semantics are undecided and current implementation leaks rules from the root to submodules
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# # exportIgnore can be used with submodules
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# pathWithExportIgnore=$(nix eval --impure --raw --expr "(builtins.fetchGit { url = file://$rootRepo; submodules = true; exportIgnore = true; }).outPath")
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# # find $pathWithExportIgnore
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# # git -C $rootRepo archive --format=tar HEAD | tar -t
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# # cp -a $rootRepo /tmp/rootRepo
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# [[ -e $pathWithExportIgnore/sub/content ]]
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# [[ ! -e $pathWithExportIgnore/exclude-from-root ]]
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# [[ ! -e $pathWithExportIgnore/sub/exclude-from-sub ]]
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# TBD possible semantics for submodules + exportIgnore
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# # root .gitattribute has no power across submodule boundary
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# [[ -e $pathWithExportIgnore/sub/exclude-from-root ]]
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# [[ -e $pathWithExportIgnore/sub/exclude-deep ]]
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# exportIgnore can be explicitly disabled with submodules
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pathWithoutExportIgnore=$(nix eval --impure --raw --expr "(builtins.fetchGit { url = file://$rootRepo; submodules = true; exportIgnore = false; }).outPath")
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# find $pathWithoutExportIgnore
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[[ -e $pathWithoutExportIgnore/exclude-from-root ]]
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[[ -e $pathWithoutExportIgnore/sub/exclude-from-sub ]]
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# exportIgnore defaults to false when submodules = true
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pathWithSubmodules=$(nix eval --impure --raw --expr "(builtins.fetchGit { url = file://$rootRepo; submodules = true; }).outPath")
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[[ -e $pathWithoutExportIgnore/exclude-from-root ]]
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[[ -e $pathWithoutExportIgnore/sub/exclude-from-sub ]]
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