Files
git/t/t3426-rebase-submodule.sh
Denton Liu a1d1faf49f lib-submodule-update: use callbacks in test_submodule_switch_common()
When we run a test helper function in test_submodule_switch_common(), we
sometimes specify a whole helper function as the $command. When we do
this, in some test cases, we just mark the whole function with
`test_must_fail`. However, it's possible that the helper function might
fail earlier or later than expected due to an introduced bug. If this
happens, then the test case will still report as passing but it should
really be marked as failing since it didn't actually display the
intended behaviour.

Instead of invoking $command as one monolithic helper function, break it
up into three parts:

	1. $command which is always a git command.
	2. $before which is a callback function that runs just prior to
	   $command.
	3. $after which is a callback function that runs just after
	   $command.

If the command requires a filename argument, specify it as `\$arg` since
that variable will be set and the whole $command string will be eval'd.
Unfortunately, there is no way to get rid of the eval as some of the
commands that are passed (such as the `git pull` tests) require that no
additional arguments are passed so we must have some mechanism for the
caller to specify whether or not it wants the filename argument.

The $before and $after callback functions will be passed the filename as
the first arg. These callback functions are optional and, if missing,
will be replaced with `true`. Also, in the case where we have a
`test_must_fail` test, $after will not be executed, similar to how the
helper functions currently behave when the git command fails and exits
the &&-chain.

Finally, as an added bonus, `test_must_fail` will only run on $command
which is guaranteed to be a git command.

An alternate design was considered where $OVERWRITING_FAIL is set from
test_submodule_switch_common() and exposed to the helper function. This
approach was considered too difficult to understand due to the fact that
using a signalling magic environment variable might be too indirect.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-06-18 09:25:35 -07:00

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#!/bin/sh
test_description='rebase can handle submodules'
. ./test-lib.sh
. "$TEST_DIRECTORY"/lib-submodule-update.sh
. "$TEST_DIRECTORY"/lib-rebase.sh
git_rebase () {
git status -su >expect &&
ls -1pR * >>expect &&
git checkout -b ours HEAD &&
echo x >>file1 &&
git add file1 &&
git commit -m add_x &&
git revert HEAD &&
git status -su >actual &&
ls -1pR * >>actual &&
test_cmp expect actual
}
test_submodule_switch_func "rebase \$arg" "git_rebase"
git_rebase_interactive () {
git status -su >expect &&
ls -1pR * >>expect &&
git checkout -b ours HEAD &&
echo x >>file1 &&
git add file1 &&
git commit -m add_x &&
git revert HEAD &&
git status -su >actual &&
ls -1pR * >>actual &&
test_cmp expect actual &&
set_fake_editor &&
echo "fake-editor.sh" >.git/info/exclude
}
test_submodule_switch_func "rebase -i \$arg" "git_rebase_interactive"
test_expect_success 'rebase interactive ignores modified submodules' '
test_when_finished "rm -rf super sub" &&
git init sub &&
git -C sub commit --allow-empty -m "Initial commit" &&
git init super &&
git -C super submodule add ../sub &&
git -C super config submodule.sub.ignore dirty &&
>super/foo &&
git -C super add foo &&
git -C super commit -m "Initial commit" &&
test_commit -C super a &&
test_commit -C super b &&
test_commit -C super/sub c &&
set_fake_editor &&
git -C super rebase -i HEAD^^
'
test_done