Re: [PATCH v3 9/9] t1092: test interesting sparse-checkout scenarios

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On Sat, Jan 23, 2021 at 11:58 AM Derrick Stolee via GitGitGadget
<gitgitgadget@xxxxxxxxx> wrote:
>
> From: Derrick Stolee <dstolee@xxxxxxxxxxxxx>
>
> These also document some behaviors that differ from a full checkout, and
> possibly in a way that is not intended.
>
> The test is designed to be run with "--run=1,X" where 'X' is an

Random sidenote: Why not suggest "--run=setup,X" instead?  Then if you
ever add additional "setup" steps, it'd run all of them.

(See https://lore.kernel.org/git/0355c888828aeec331a6b99a26d8aa04cff59859.1602980628.git.gitgitgadget@xxxxxxxxx/)

> interesting test case. Each test uses 'init_repos' to reset the full and
> sparse copies of the initial-repo that is created by the first test
> case. This also makes it possible to have test cases leave the working
> directory or index in unusual states without disturbing later cases.
>
> Signed-off-by: Derrick Stolee <dstolee@xxxxxxxxxxxxx>
> ---
>  t/t1092-sparse-checkout-compatibility.sh | 301 +++++++++++++++++++++++
>  1 file changed, 301 insertions(+)
>  create mode 100755 t/t1092-sparse-checkout-compatibility.sh
>
> diff --git a/t/t1092-sparse-checkout-compatibility.sh b/t/t1092-sparse-checkout-compatibility.sh
> new file mode 100755
> index 00000000000..8cd3e5a8d22
> --- /dev/null
> +++ b/t/t1092-sparse-checkout-compatibility.sh
> @@ -0,0 +1,301 @@
> +#!/bin/sh
> +
> +test_description='compare full workdir to sparse workdir'
> +
> +. ./test-lib.sh
> +
> +test_expect_success 'setup' '
> +       git init initial-repo &&
> +       (
> +               cd initial-repo &&
> +               echo a >a &&
> +               echo "after deep" >e &&
> +               echo "after folder1" >g &&
> +               echo "after x" >z &&
> +               mkdir folder1 folder2 deep x &&
> +               mkdir deep/deeper1 deep/deeper2 &&
> +               mkdir deep/deeper1/deepest &&
> +               echo "after deeper1" >deep/e &&
> +               echo "after deepest" >deep/deeper1/e &&
> +               cp a folder1 &&
> +               cp a folder2 &&
> +               cp a x &&
> +               cp a deep &&
> +               cp a deep/deeper1 &&
> +               cp a deep/deeper2 &&
> +               cp a deep/deeper1/deepest &&
> +               cp -r deep/deeper1/deepest deep/deeper2 &&
> +               git add . &&
> +               git commit -m "initial commit" &&
> +               git checkout -b base &&
> +               for dir in folder1 folder2 deep
> +               do
> +                       git checkout -b update-$dir &&
> +                       echo "updated $dir" >$dir/a &&
> +                       git commit -a -m "update $dir" || return 1
> +               done &&
> +
> +               git checkout -b rename-base base &&
> +               echo >folder1/larger-content <<-\EOF &&
> +               matching
> +               lines
> +               help
> +               inexact
> +               renames
> +               EOF
> +               cp folder1/larger-content folder2/ &&
> +               cp folder1/larger-content deep/deeper1/ &&
> +               git add . &&
> +               git commit -m "add interesting rename content" &&
> +
> +               git checkout -b rename-out-to-out rename-base &&
> +               mv folder1/a folder2/b &&
> +               mv folder1/larger-content folder2/edited-content &&
> +               echo >>folder2/edited-content &&
> +               git add . &&
> +               git commit -m "rename folder1/... to folder2/..." &&
> +
> +               git checkout -b rename-out-to-in rename-base &&
> +               mv folder1/a deep/deeper1/b &&
> +               mv folder1/larger-content deep/deeper1/edited-content &&
> +               echo >>deep/deeper1/edited-content &&
> +               git add . &&
> +               git commit -m "rename folder1/... to deep/deeper1/..." &&
> +
> +               git checkout -b rename-in-to-out rename-base &&
> +               mv deep/deeper1/a folder1/b &&
> +               mv deep/deeper1/larger-content folder1/edited-content &&
> +               echo >>folder1/edited-content &&
> +               git add . &&
> +               git commit -m "rename deep/deeper1/... to folder1/..." &&
> +
> +               git checkout -b deepest base &&
> +               echo "updated deepest" >deep/deeper1/deepest/a &&
> +               git commit -a -m "update deepest" &&
> +
> +               git checkout -f base &&
> +               git reset --hard
> +       )
> +'
> +
> +init_repos () {
> +       rm -rf full-checkout sparse-checkout sparse-index &&
> +
> +       # create repos in initial state
> +       cp -r initial-repo full-checkout &&
> +       git -C full-checkout reset --hard &&
> +
> +       cp -r initial-repo sparse-checkout &&
> +       git -C sparse-checkout reset --hard &&
> +       git -C sparse-checkout sparse-checkout init --cone &&
> +
> +       # initialize sparse-checkout definitions
> +       git -C sparse-checkout sparse-checkout set deep
> +}
> +
> +run_on_sparse () {
> +       (
> +               cd sparse-checkout &&
> +               $* >../sparse-checkout-out 2>../sparse-checkout-err
> +       )
> +}
> +
> +run_on_all () {
> +       (
> +               cd full-checkout &&
> +               $* >../full-checkout-out 2>../full-checkout-err
> +       ) &&
> +       run_on_sparse $*
> +}
> +
> +test_all_match () {
> +       run_on_all $* &&
> +       test_cmp full-checkout-out sparse-checkout-out &&
> +       test_cmp full-checkout-err sparse-checkout-err
> +}
> +
> +test_expect_success 'status with options' '
> +       init_repos &&
> +       test_all_match git status --porcelain=v2 &&
> +       test_all_match git status --porcelain=v2 -z -u &&
> +       test_all_match git status --porcelain=v2 -uno &&
> +       run_on_all "touch README.md" &&
> +       test_all_match git status --porcelain=v2 &&
> +       test_all_match git status --porcelain=v2 -z -u &&
> +       test_all_match git status --porcelain=v2 -uno &&
> +       test_all_match git add README.md &&
> +       test_all_match git status --porcelain=v2 &&
> +       test_all_match git status --porcelain=v2 -z -u &&
> +       test_all_match git status --porcelain=v2 -uno
> +'
> +
> +test_expect_success 'add, commit, checkout' '
> +       init_repos &&
> +
> +       write_script edit-contents <<-\EOF &&
> +       echo text >>$1
> +       EOF
> +       run_on_all "../edit-contents README.md" &&
> +
> +       test_all_match git add README.md &&
> +       test_all_match git status --porcelain=v2 &&
> +       test_all_match git commit -m "Add README.md" &&
> +
> +       test_all_match git checkout HEAD~1 &&
> +       test_all_match git checkout - &&
> +
> +       run_on_all "../edit-contents README.md" &&
> +
> +       test_all_match git add -A &&
> +       test_all_match git status --porcelain=v2 &&
> +       test_all_match git commit -m "Extend README.md" &&
> +
> +       test_all_match git checkout HEAD~1 &&
> +       test_all_match git checkout - &&
> +
> +       run_on_all "../edit-contents deep/newfile" &&
> +
> +       test_all_match git status --porcelain=v2 -uno &&
> +       test_all_match git status --porcelain=v2 &&
> +       test_all_match git add . &&
> +       test_all_match git status --porcelain=v2 &&
> +       test_all_match git commit -m "add deep/newfile" &&
> +
> +       test_all_match git checkout HEAD~1 &&
> +       test_all_match git checkout -
> +'
> +
> +test_expect_success 'checkout and reset --hard' '
> +       init_repos &&
> +
> +       test_all_match git checkout update-folder1 &&
> +       test_all_match git status --porcelain=v2 &&
> +
> +       test_all_match git checkout update-deep &&
> +       test_all_match git status --porcelain=v2 &&
> +
> +       test_all_match git checkout -b reset-test &&
> +       test_all_match git reset --hard deepest &&
> +       test_all_match git reset --hard update-folder1 &&
> +       test_all_match git reset --hard update-folder2
> +'
> +
> +test_expect_success 'diff --staged' '
> +       init_repos &&
> +
> +       write_script edit-contents <<-\EOF &&
> +       echo text >>README.md
> +       EOF
> +       run_on_all "../edit-contents" &&
> +
> +       test_all_match git diff &&
> +       test_all_match git diff --staged &&
> +       test_all_match git add README.md &&
> +       test_all_match git diff &&
> +       test_all_match git diff --staged
> +'
> +
> +test_expect_success 'diff with renames' '
> +       init_repos &&
> +
> +       for branch in rename-out-to-out rename-out-to-in rename-in-to-out
> +       do
> +               test_all_match git checkout rename-base &&
> +               test_all_match git checkout $branch -- .&&
> +               test_all_match git diff --staged --no-renames &&
> +               test_all_match git diff --staged --find-renames || return 1
> +       done
> +'
> +
> +test_expect_success 'log with pathspec outside sparse definition' '
> +       init_repos &&
> +
> +       test_all_match git log -- a &&
> +       test_all_match git log -- folder1/a &&
> +       test_all_match git log -- folder2/a &&
> +       test_all_match git log -- deep/a &&
> +       test_all_match git log -- deep/deeper1/a &&
> +       test_all_match git log -- deep/deeper1/deepest/a &&
> +
> +       test_all_match git checkout update-folder1 &&
> +       test_all_match git log -- folder1/a
> +'
> +
> +test_expect_success 'blame with pathspec inside sparse definition' '
> +       init_repos &&
> +
> +       test_all_match git blame a &&
> +       test_all_match git blame deep/a &&
> +       test_all_match git blame deep/deeper1/a &&
> +       test_all_match git blame deep/deeper1/deepest/a
> +'
> +
> +# TODO: blame currently does not support blaming files outside of the
> +# sparse definition. It complains that the file doesn't exist locally.
> +test_expect_failure 'blame with pathspec outside sparse definition' '
> +       init_repos &&
> +
> +       test_all_match git blame folder1/a &&
> +       test_all_match git blame folder2/a &&
> +       test_all_match git blame deep/deeper2/a &&
> +       test_all_match git blame deep/deeper2/deepest/a
> +'
> +
> +# TODO: reset currently does not behave as expected when in a
> +# sparse-checkout.
> +test_expect_failure 'checkout and reset (mixed)' '
> +       init_repos &&
> +
> +       test_all_match git checkout -b reset-test update-deep &&
> +       test_all_match git reset deepest &&
> +       test_all_match git reset update-folder1 &&
> +       test_all_match git reset update-folder2
> +'
> +
> +test_expect_success 'merge' '
> +       init_repos &&
> +
> +       test_all_match git checkout -b merge update-deep &&
> +       test_all_match git merge -m "folder1" update-folder1 &&
> +       test_all_match git rev-parse HEAD^{tree} &&
> +       test_all_match git merge -m "folder2" update-folder2 &&
> +       test_all_match git rev-parse HEAD^{tree}
> +'
> +
> +test_expect_success 'merge with outside renames' '
> +       init_repos &&
> +
> +       for type in out-to-out out-to-in in-to-out
> +       do
> +               test_all_match git reset --hard &&
> +               test_all_match git checkout -f -b merge-$type update-deep &&
> +               test_all_match git merge -m "$type" rename-$type &&
> +               test_all_match git rev-parse HEAD^{tree} || return 1
> +       done
> +'
> +
> +test_expect_success 'clean' '
> +       init_repos &&
> +
> +       echo bogus >>.gitignore &&
> +       run_on_all cp ../.gitignore . &&
> +       test_all_match git add .gitignore &&
> +       test_all_match git commit -m ignore-bogus-files &&
> +
> +       run_on_sparse mkdir folder1 &&
> +       run_on_all touch folder1/bogus &&
> +
> +       test_all_match git status --porcelain=v2 &&
> +       test_all_match git clean -f &&
> +       test_all_match git status --porcelain=v2 &&
> +
> +       test_all_match git clean -xf &&
> +       test_all_match git status --porcelain=v2 &&
> +
> +       test_all_match git clean -xdf &&
> +       test_all_match git status --porcelain=v2 &&
> +
> +       test_path_is_dir sparse-checkout/folder1
> +'
> +
> +test_done
> --
> gitgitgadget



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