[WIP PATCH 10/10] Add new testcase (temp14) showing how undetected renames can cause or spuriously avoid merge conflicts

[Elijah Newren <newren@gmail.com>]

---
 t/temp14.sh |   63 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 63 insertions(+), 0 deletions(-)
 create mode 100755 t/temp14.sh

diff --git a/t/temp14.sh b/t/temp14.sh
new file mode 100755
index 0000000..f82d991
--- /dev/null
+++ b/t/temp14.sh
@@ -0,0 +1,63 @@
+#!/bin/sh
+
+test_description='undetected renames cause merge problems'
+
+. ./test-lib.sh
+
+test_expect_success 'setup undetected rename causing conflict in merge' '
+	printf "1\n2\n3\n4\n5\n" >a &&
+	echo foo >b &&
+	git add a b &&
+	git commit -m A &&
+	git tag A &&
+
+	git checkout -b B A &&
+	git mv a c &&
+	echo "Completely different content" >a &&
+	git add a &&
+	git commit -m B &&
+
+	git checkout -b C A &&
+	echo 6 >>a &&
+	git add a &&
+	git commit -m C
+'
+
+test_expect_success 'undetected rename causes conflict' '
+	git checkout -q C^0 &&
+	git merge -s recursive B^0 &&
+
+	test 3 -eq $(git ls-files -s | wc -l) &&
+	test 0 -eq $(git ls-files -u | wc -l) &&
+	test 0 -eq $(git ls-files -o | wc -l) &&
+
+	test 6 -eq $(wc -l < c) &&
+	test $(git rev-parse HEAD:a) = $(git rev-parse B:a) &&
+	test $(git rev-parse HEAD:b) = $(git rev-parse A:b)
+'
+
+test_expect_success 'setup undetected rename causing missed merge conflict' '
+	git reset --hard &&
+	git clean -f &&
+
+	git checkout -b D A &&
+	echo 7 >>a &&
+	git add a &&
+	git mv a c &&
+	echo "Completely different content" >a &&
+	git add a &&
+	git commit -m D &&
+
+	git checkout -b E A &&
+	git rm a &&
+	echo "Completely different content" >>a &&
+	git add a &&
+	git commit -m E
+'
+
+test_expect_success 'undetected rename causes missed conflict' '
+	git checkout -q E^0 &&
+	test_must_fail git merge -s recursive D^0
+'
+
+test_done
-- 
1.7.4