[PATCH] tests: add tests for the bash prompt functions in the completion script

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The tests cover the discovery of the .git directory in the __gitdir()
function in different scenarios, and the prompt itself, i.e. branch
name, detached heads, operations (rebase, merge, cherry-pick, bisect),
and status indicators (dirty, stash, untracked files; but not the
upstream status).

Signed-off-by: SZEDER Gábor <szeder@xxxxxxxxxx>
---

Goes on top of fc/completion-tests (b8574ba7).

 t/t9902-completion.sh |  436 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 436 insertions(+)

diff --git a/t/t9902-completion.sh b/t/t9902-completion.sh
index 3bbec79b..6edbaa72 100755
--- a/t/t9902-completion.sh
+++ b/t/t9902-completion.sh
@@ -114,4 +114,440 @@ test_expect_success 'double dash "git checkout"' '
 	test_completion "git checkout --"
 '
 
+actual="$TRASH_DIRECTORY/actual"
+
+test_expect_success 'setup for prompt tests' '
+	mkdir -p subdir/subsubdir &&
+	git init otherrepo &&
+	echo 1 > file &&
+	git add file &&
+	test_tick &&
+	git commit -m initial &&
+	git tag -a -m msg1 t1 &&
+	git checkout -b b1 &&
+	echo 2 > file &&
+	git commit -m "second b1" file &&
+	echo 3 > file &&
+	git commit -m "third b1" file &&
+	git tag -a -m msg2 t2 &&
+	git checkout -b b2 master &&
+	echo 0 > file &&
+	git commit -m "second b2" file &&
+	git checkout master
+'
+
+test_expect_success 'gitdir - from command line (through $__git_dir)' '
+	echo "$TRASH_DIRECTORY/otherrepo/.git" > expected &&
+	(
+		__git_dir="$TRASH_DIRECTORY/otherrepo/.git" &&
+		__gitdir > "$actual"
+	) &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'gitdir - repo as argument' '
+	echo "otherrepo/.git" > expected &&
+	__gitdir "otherrepo" > "$actual" &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'gitdir - remote as argument' '
+	echo "remote" > expected &&
+	__gitdir "remote" > "$actual" &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'gitdir - .git directory in cwd' '
+	echo ".git" > expected &&
+	__gitdir > "$actual" &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'gitdir - .git directory in parent' '
+	echo "$TRASH_DIRECTORY/.git" > expected &&
+	(
+		cd subdir &&
+		__gitdir > "$actual"
+	) &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'gitdir - cwd is a .git directory' '
+	echo "." > expected &&
+	(
+		cd .git &&
+		__gitdir > "$actual"
+	) &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'gitdir - parent is a .git directory' '
+	echo "$TRASH_DIRECTORY/.git" > expected &&
+	(
+		cd .git/refs &&
+		__gitdir > "$actual"
+	) &&
+	test_cmp expected "$actual"
+'
+
+test_expect_failure 'gitdir - $GIT_DIR set while .git directory in cwd' '
+	echo "$TRASH_DIRECTORY/otherrepo/.git" > expected &&
+	(
+		GIT_DIR="$TRASH_DIRECTORY/otherrepo/.git" &&
+		export GIT_DIR &&
+		__gitdir > "$actual"
+	) &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'gitdir - $GIT_DIR set while .git directory in parent' '
+	echo "$TRASH_DIRECTORY/otherrepo/.git" > expected &&
+	(
+		GIT_DIR="$TRASH_DIRECTORY/otherrepo/.git" &&
+		export GIT_DIR &&
+		cd subdir &&
+		__gitdir > "$actual"
+	) &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'gitdir - gitfile in cwd' '
+	echo "$TRASH_DIRECTORY/otherrepo/.git" > expected &&
+	echo "gitdir: $TRASH_DIRECTORY/otherrepo/.git" > subdir/.git &&
+	test_when_finished "rm -f subdir/.git" &&
+	(
+		cd subdir &&
+		__gitdir > "$actual"
+	) &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'gitdir - gitfile in parent' '
+	echo "$TRASH_DIRECTORY/otherrepo/.git" > expected &&
+	echo "gitdir: $TRASH_DIRECTORY/otherrepo/.git" > subdir/.git &&
+	test_when_finished "rm -f subdir/.git" &&
+	(
+		cd subdir/subsubdir &&
+		__gitdir > "$actual"
+	) &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success SYMLINKS 'gitdir - resulting path avoids symlinks' '
+	echo "$TRASH_DIRECTORY/otherrepo/.git" >expected &&
+	mkdir otherrepo/dir &&
+	test_when_finished "rm -rf otherrepo/dir" &&
+	ln -s otherrepo/dir link &&
+	test_when_finished "rm -f link" &&
+	(
+		cd link &&
+		__gitdir > "$actual"
+	) &&
+	test_cmp expected actual
+'
+
+test_expect_success 'gitdir - not a git repository' '
+	(
+		cd subdir/subsubdir &&
+		GIT_CEILING_DIRECTORIES="$TRASH_DIRECTORY" &&
+		export GIT_CEILING_DIRECTORIES &&
+		test_must_fail __gitdir
+	)
+'
+
+test_expect_success 'prompt - branch name' '
+	printf " (master)" > expected &&
+	__git_ps1 > "$actual" &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'prompt - detached head' '
+	printf " ((%s...))" $(git log -1 --format="%h" b1^) > expected &&
+	git checkout b1^ &&
+	test_when_finished "git checkout master" &&
+	__git_ps1 > "$actual" &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'prompt - describe detached head - contains' '
+	printf " ((t2~1))" > expected &&
+	git checkout b1^ &&
+	test_when_finished "git checkout master" &&
+	(
+		GIT_PS1_DESCRIBE_STYLE=contains &&
+		__git_ps1 > "$actual"
+	) &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'prompt - describe detached head - branch' '
+	printf " ((b1~1))" > expected &&
+	git checkout b1^ &&
+	test_when_finished "git checkout master" &&
+	(
+		GIT_PS1_DESCRIBE_STYLE=branch &&
+		__git_ps1 > "$actual"
+	) &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'prompt - describe detached head - describe' '
+	printf " ((t1-1-g%s))" $(git log -1 --format="%h" b1^) > expected &&
+	git checkout b1^ &&
+	test_when_finished "git checkout master" &&
+	(
+		GIT_PS1_DESCRIBE_STYLE=describe &&
+		__git_ps1 > "$actual"
+	) &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'prompt - describe detached head - default' '
+	printf " ((t2))" > expected &&
+	git checkout --detach b1 &&
+	test_when_finished "git checkout master" &&
+	__git_ps1 > "$actual" &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'prompt - inside .git directory' '
+	printf " (GIT_DIR!)" > expected &&
+	(
+		cd .git &&
+		__git_ps1 > "$actual"
+	) &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'prompt - deep inside .git directory' '
+	printf " (GIT_DIR!)" > expected &&
+	(
+		cd .git/refs &&
+		__git_ps1 > "$actual"
+	) &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'prompt - inside bare repository' '
+	printf " (BARE:master)" > expected &&
+	git init --bare bare.git &&
+	test_when_finished "rm -rf bare.git" &&
+	(
+		cd bare.git &&
+		__git_ps1 > "$actual"
+	) &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'prompt - interactive rebase' '
+	printf " (b1|REBASE-i)" > expected
+	echo "#!$SHELL_PATH" >fake_editor.sh &&
+	cat >>fake_editor.sh <<\EOF &&
+echo "edit $(git log -1 --format="%h")" > "$1"
+EOF
+	test_when_finished "rm -f fake_editor.sh" &&
+	chmod a+x fake_editor.sh &&
+	test_set_editor "$TRASH_DIRECTORY/fake_editor.sh" &&
+	git checkout b1 &&
+	test_when_finished "git checkout master" &&
+	git rebase -i HEAD^ &&
+	test_when_finished "git rebase --abort"
+	__git_ps1 > "$actual" &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'prompt - rebase merge' '
+	printf " (b2|REBASE-m)" > expected &&
+	git checkout b2 &&
+	test_when_finished "git checkout master" &&
+	test_must_fail git rebase --merge b1 b2 &&
+	test_when_finished "git rebase --abort" &&
+	__git_ps1 > "$actual" &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'prompt - rebase' '
+	printf " ((t2)|REBASE)" > expected &&
+	git checkout b2 &&
+	test_when_finished "git checkout master" &&
+	test_must_fail git rebase b1 b2 &&
+	test_when_finished "git rebase --abort" &&
+	__git_ps1 > "$actual" &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'prompt - merge' '
+	printf " (b1|MERGING)" > expected &&
+	git checkout b1 &&
+	test_when_finished "git checkout master" &&
+	test_must_fail git merge b2 &&
+	test_when_finished "git reset --hard" &&
+	__git_ps1 > "$actual" &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'prompt - cherry-pick' '
+	printf " (master|CHERRY-PICKING)" > expected &&
+	test_must_fail git cherry-pick b1 &&
+	test_when_finished "git reset --hard" &&
+	__git_ps1 > "$actual" &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'prompt - bisect' '
+	printf " (master|BISECTING)" > expected &&
+	git bisect start &&
+	test_when_finished "git bisect reset" &&
+	__git_ps1 > "$actual" &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'prompt - dirty status indicator - clean' '
+	printf " (master)" > expected &&
+	(
+		GIT_PS1_SHOWDIRTYSTATE=y &&
+		__git_ps1 > "$actual"
+	) &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'prompt - dirty status indicator - dirty worktree' '
+	printf " (master *)" > expected &&
+	echo "dirty" > file &&
+	test_when_finished "git reset --hard" &&
+	(
+		GIT_PS1_SHOWDIRTYSTATE=y &&
+		__git_ps1 > "$actual"
+	) &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'prompt - dirty status indicator - dirty index' '
+	printf " (master +)" > expected &&
+	echo "dirty" > file &&
+	test_when_finished "git reset --hard" &&
+	git add -u &&
+	(
+		GIT_PS1_SHOWDIRTYSTATE=y &&
+		__git_ps1 > "$actual"
+	) &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'prompt - dirty status indicator - dirty index and worktree' '
+	printf " (master *+)" > expected &&
+	echo "dirty index" > file &&
+	test_when_finished "git reset --hard" &&
+	git add -u &&
+	echo "dirty worktree" > file &&
+	(
+		GIT_PS1_SHOWDIRTYSTATE=y &&
+		__git_ps1 > "$actual"
+	) &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'prompt - dirty status indicator - before root commit' '
+	printf " (master #)" > expected &&
+	(
+		GIT_PS1_SHOWDIRTYSTATE=y &&
+		cd otherrepo &&
+		__git_ps1 > "$actual"
+	) &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'prompt - dirty status indicator - disabled by config' '
+	printf " (master)" > expected &&
+	echo "dirty" > file &&
+	test_when_finished "git reset --hard" &&
+	test_config bash.showDirtyState false &&
+	(
+		GIT_PS1_SHOWDIRTYSTATE=y &&
+		__git_ps1 > "$actual"
+	) &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'prompt - dirty status indicator - not shown inside .git directory' '
+	printf " (GIT_DIR!)" > expected &&
+	echo "dirty" > file &&
+	test_when_finished "git reset --hard" &&
+	(
+		GIT_PS1_SHOWDIRTYSTATE=y &&
+		cd .git &&
+		__git_ps1 > "$actual"
+	) &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'prompt - stash status indicator - no stash' '
+	printf " (master)" > expected &&
+	(
+		GIT_PS1_SHOWSTASHSTATE=y &&
+		__git_ps1 > "$actual"
+	) &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'prompt - stash status indicator - stash' '
+	printf " (master $)" > expected &&
+	echo 2 >file &&
+	git stash &&
+	test_when_finished "git stash drop" &&
+	(
+		GIT_PS1_SHOWSTASHSTATE=y &&
+		__git_ps1 > "$actual"
+	) &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'prompt - stash status indicator - not shown inside .git directory' '
+	printf " (GIT_DIR!)" > expected &&
+	echo 2 >file &&
+	git stash &&
+	test_when_finished "git stash drop" &&
+	(
+		GIT_PS1_SHOWSTASHSTATE=y &&
+		cd .git &&
+		__git_ps1 > "$actual"
+	) &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'prompt - untracked files status indicator - no untracked files' '
+	printf " (master)" > expected &&
+	(
+		GIT_PS1_SHOWUNTRACKEDFILES=y &&
+		cd otherrepo &&
+		__git_ps1 > "$actual"
+	) &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'prompt - untracked files status indicator - untracked files' '
+	printf " (master %%)" > expected &&
+	(
+		GIT_PS1_SHOWUNTRACKEDFILES=y &&
+		__git_ps1 > "$actual"
+	) &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'prompt - untracked files status indicator - not shown inside .git directory' '
+	printf " (GIT_DIR!)" > expected &&
+	(
+		GIT_PS1_SHOWUNTRACKEDFILES=y &&
+		cd .git &&
+		__git_ps1 > "$actual"
+	) &&
+	test_cmp expected "$actual"
+'
+
+test_expect_success 'prompt - format string starting with dash' '
+	printf -- "-master" > expected &&
+	__git_ps1 "-%s" > "$actual" &&
+	test_cmp expected "$actual"
+'
+
 test_done
-- 
1.7.10.177.g26c39

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