[PATCH v3 contrib/subtree 1/1] Add a test for subtree rebase that loses commits

From

David Greene <greened@obbligato.org>

Date

Jan 17, 2016, 23:13 UTC

Message-ID

<ec1decfc5fd463f1e78a5aa2636c24fb11e80a62.1453072387.git.greened@obbligato.org>

In-Reply-To

<CAPig+cQ6Dfvc4dkQVZ6BqzD76nZ4mCcqkO4eAecrMENKWtgWEg@mail.gmail.com>

From: David A. Greene <greened@obbligato.org>

Signed-off-by: David A. Greene <greened@obbligato.org>
---

Notes:
    Change History:
    
    v1 - Initial version
    v2 - Additional tests and code cleanup
    v3 - Remove check_equal, mark comments on failure and remove
         test_debug statements

 t/t3427-rebase-subtree.sh | 79 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 79 insertions(+)

diff --git a/t/t3427-rebase-subtree.sh b/t/t3427-rebase-subtree.sh
new file mode 100755
index 0000000..add3b79
--- /dev/null
+++ b/t/t3427-rebase-subtree.sh
@@ -0,0 +1,79 @@
+#!/bin/sh
+
+test_description='git rebase tests for -Xsubtree
+
+This test runs git rebase and tests the subtree strategy.
+'
+. ./test-lib.sh
+. "$TEST_DIRECTORY"/lib-rebase.sh
+
+check_equal() {
+	test_debug 'echo'
+	test_debug "echo \"check a:\" \"{$1}\""
+	test_debug "echo \"      b:\" \"{$2}\""
+	test "$1" = "$2"
+}
+
+last_commit_message() {
+	git log --pretty=format:%s -1
+}
+
+test_expect_success 'setup' '
+	test_commit README &&
+	mkdir files &&
+	(
+		cd files &&
+		git init &&
+		test_commit master1 &&
+		test_commit master2 &&
+		test_commit master3
+	) &&
+	test_debug "echo Add project master to master" &&
+	git fetch files master &&
+	git branch files-master FETCH_HEAD &&
+	test_debug "echo Add subtree master to master via subtree" &&
+	git read-tree --prefix=files_subtree files-master &&
+	git checkout -- files_subtree &&
+	tree=$(git write-tree) &&
+	head=$(git rev-parse HEAD) &&
+	rev=$(git rev-parse --verify files-master^0) &&
+	commit=$(git commit-tree -p $head -p $rev -m "Add subproject master" $tree) &&
+	git reset $commit &&
+	(
+		cd files_subtree &&
+		test_commit master4
+	) &&
+	test_commit files_subtree/master5
+'
+
+# Does not preserve master4 and master5.
+test_expect_failure 'Rebase -Xsubtree --preserve-merges --onto' '
+	reset_rebase &&
+	git checkout -b rebase-preserve-merges master &&
+	git filter-branch --prune-empty -f --subdirectory-filter files_subtree &&
+	git commit -m "Empty commit" --allow-empty &&
+	git rebase -Xsubtree=files_subtree --preserve-merges --onto files-master master &&
+	check_equal "$(last_commit_message)" "files_subtree/master5"
+'
+
+# Does not preserve master4, master5 and empty.
+test_expect_failure 'Rebase -Xsubtree --keep-empty --preserve-merges --onto' '
+	reset_rebase &&
+	git checkout -b rebase-keep-empty master &&
+	git filter-branch --prune-empty -f --subdirectory-filter files_subtree &&
+	git commit -m "Empty commit" --allow-empty &&
+	git rebase -Xsubtree=files_subtree --keep-empty --preserve-merges --onto files-master master &&
+	check_equal "$(last_commit_message)" "Empty commit"
+'
+
+# fatal: Could not parse object
+test_expect_failure 'Rebase -Xsubtree --onto' '
+	reset_rebase &&
+	git checkout -b rebase-onto master &&
+	git filter-branch --prune-empty -f --subdirectory-filter files_subtree &&
+	git commit -m "Empty commit" --allow-empty &&
+	git rebase -Xsubtree=files_subtree --onto files-master master &&
+	check_equal "$(last_commit_message)" "Empty commit"
+'
+
+test_done

-- 
2.6.1