From 8a1358cc3067ea0eebe4663725ef2bea5896bffc Mon Sep 17 00:00:00 2001
From: Elijah Newren <newren@gmail.com>
Date: Wed, 13 Mar 2019 17:05:58 -0700
Subject: [PATCH] filter-repo: add tests checking whether we start in a clean
 clone

Signed-off-by: Elijah Newren <newren@gmail.com>
---
 t/t9390-filter-repo.sh | 74 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)

diff --git a/t/t9390-filter-repo.sh b/t/t9390-filter-repo.sh
index 289c147..9017aa9 100755
--- a/t/t9390-filter-repo.sh
+++ b/t/t9390-filter-repo.sh
@@ -643,4 +643,78 @@ test_expect_success 'commit message rewrite unsuccessful' '
 	)
 '
 
+test_expect_success 'startup sanity checks' '
+	(
+		git clone file://"$(pwd)"/analyze_me startup_sanity_checks &&
+		cd startup_sanity_checks &&
+
+		echo foobar | git hash-object -w --stdin &&
+		test_must_fail git filter-repo --path numbers 2>err &&
+		test_i18ngrep "expected freshly packed repo" err &&
+		git prune &&
+
+		git remote add another_remote /dev/null &&
+		test_must_fail git filter-repo --path numbers 2>err &&
+		test_i18ngrep "expected one remote, origin" err &&
+		git remote rm another_remote &&
+
+		git remote rename origin another_remote &&
+		test_must_fail git filter-repo --path numbers 2>err &&
+		test_i18ngrep "expected one remote, origin" err &&
+		git remote rename another_remote origin &&
+
+		cd words &&
+		test_must_fail git filter-repo --path numbers 2>err &&
+		test_i18ngrep "GIT_DIR must be .git" err &&
+		rm err &&
+		cd .. &&
+
+		git config core.bare true &&
+		test_must_fail git filter-repo --path numbers 2>err &&
+		test_i18ngrep "GIT_DIR must be ." err &&
+		git config core.bare false &&
+
+		git update-ref -m "Just Testing" refs/heads/master HEAD &&
+		test_must_fail git filter-repo --path numbers 2>err &&
+		test_i18ngrep "expected at most one entry in the reflog" err &&
+		git reflog expire --expire=now &&
+
+		echo yes >>words/know &&
+		git stash save random change &&
+		rm -rf .git/logs/ &&
+		git gc &&
+		test_must_fail git filter-repo --path numbers 2>err &&
+		test_i18ngrep "has stashed changes" err &&
+		git update-ref -d refs/stash &&
+
+		echo yes >>words/know &&
+		git add words/know &&
+		git gc --prune=now &&
+		test_must_fail git filter-repo --path numbers 2>err &&
+		test_i18ngrep "you have uncommitted changes" err &&
+		git checkout HEAD words/know &&
+
+		echo yes >>words/know &&
+		test_must_fail git filter-repo --path numbers 2>err &&
+		test_i18ngrep "you have unstaged changes" err &&
+		git checkout -- words/know &&
+
+		test_must_fail git filter-repo --path numbers 2>err &&
+		test_i18ngrep "you have untracked changes" err &&
+		rm err &&
+
+		git update-ref -d refs/remotes/origin/master &&
+		test_must_fail git filter-repo --path numbers 2>../err &&
+		test_i18ngrep "refs/heads/master exists, but refs/remotes/origin/master not found" ../err &&
+		git update-ref -m restoring refs/remotes/origin/master refs/heads/master &&
+		rm ../err &&
+
+		rm .git/logs/refs/remotes/origin/master &&
+		git update-ref -m funsies refs/remotes/origin/master refs/heads/master~1 &&
+		test_must_fail git filter-repo --path numbers 2>../err &&
+		test_i18ngrep "refs/heads/master does not match refs/remotes/origin/master" ../err &&
+		rm ../err
+	)
+'
+
 test_done