[PATCH 1/5 v2] t7607: use test-lib functions and check MERGE_HEAD

[Clemens Buchacher <drizzd@aon.at>]

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Use the test_commit and test_path_is_missing
functions from the test library.

Also make sure that a merge which fails due to
pre-merge checks aborts properly and does not
leave MERGE_HEAD behind.

The "will not overwrite removed file" test is an
exception to this. It notices the untracked file
at a stage where the merge is already well under
way. Therefore we cannot abort the merge without
major restructuring. See the following thread for
more details.

http://mid.gmane.org/7vskopwxej.fsf@gitster.siamese.dyndns.org

Signed-off-by: Clemens Buchacher <drizzd@aon.at>
---

On Sun, Oct 10, 2010 at 01:35:27AM -0500, Jonathan Nieder wrote:
> 
> The main change (checking that MERGE_HEAD is not present
> for a merge that fails due to pre-merge checks) seems good.

Thanks. This new version incorporates all of your suggestions.

Clemens

 t/t7607-merge-overwrite.sh |   38 +++++++++++++++-----------------------
 1 files changed, 15 insertions(+), 23 deletions(-)

diff --git a/t/t7607-merge-overwrite.sh b/t/t7607-merge-overwrite.sh
index d82349a..b8fab54 100755
--- a/t/t7607-merge-overwrite.sh
+++ b/t/t7607-merge-overwrite.sh
@@ -7,48 +7,38 @@ Do not overwrite changes.'
 . ./test-lib.sh
 
 test_expect_success 'setup' '
-	echo c0 > c0.c &&
-	git add c0.c &&
-	git commit -m c0 &&
-	git tag c0 &&
-	echo c1 > c1.c &&
-	git add c1.c &&
-	git commit -m c1 &&
-	git tag c1 &&
+	test_commit c0 c0.c &&
+	test_commit c1 c1.c &&
+	test_commit c1a c1.c "c1 a" &&
 	git reset --hard c0 &&
-	echo c2 > c2.c &&
-	git add c2.c &&
-	git commit -m c2 &&
-	git tag c2 &&
-	git reset --hard c1 &&
-	echo "c1 a" > c1.c &&
-	git add c1.c &&
-	git commit -m "c1 a" &&
-	git tag c1a &&
+	test_commit c2 c2.c &&
 	echo "VERY IMPORTANT CHANGES" > important
 '
 
 test_expect_success 'will not overwrite untracked file' '
 	git reset --hard c1 &&
-	cat important > c2.c &&
+	cp important c2.c &&
 	test_must_fail git merge c2 &&
+	test_path_is_missing .git/MERGE_HEAD &&
 	test_cmp important c2.c
 '
 
 test_expect_success 'will not overwrite new file' '
 	git reset --hard c1 &&
-	cat important > c2.c &&
+	cp important c2.c &&
 	git add c2.c &&
 	test_must_fail git merge c2 &&
+	test_path_is_missing .git/MERGE_HEAD &&
 	test_cmp important c2.c
 '
 
 test_expect_success 'will not overwrite staged changes' '
 	git reset --hard c1 &&
-	cat important > c2.c &&
+	cp important c2.c &&
 	git add c2.c &&
 	rm c2.c &&
 	test_must_fail git merge c2 &&
+	test_path_is_missing .git/MERGE_HEAD &&
 	git checkout c2.c &&
 	test_cmp important c2.c
 '
@@ -57,7 +47,7 @@ test_expect_success 'will not overwrite removed file' '
 	git reset --hard c1 &&
 	git rm c1.c &&
 	git commit -m "rm c1.c" &&
-	cat important > c1.c &&
+	cp important c1.c &&
 	test_must_fail git merge c1a &&
 	test_cmp important c1.c
 '
@@ -66,9 +56,10 @@ test_expect_success 'will not overwrite re-added file' '
 	git reset --hard c1 &&
 	git rm c1.c &&
 	git commit -m "rm c1.c" &&
-	cat important > c1.c &&
+	cp important c1.c &&
 	git add c1.c &&
 	test_must_fail git merge c1a &&
+	test_path_is_missing .git/MERGE_HEAD &&
 	test_cmp important c1.c
 '
 
@@ -76,10 +67,11 @@ test_expect_success 'will not overwrite removed file with staged changes' '
 	git reset --hard c1 &&
 	git rm c1.c &&
 	git commit -m "rm c1.c" &&
-	cat important > c1.c &&
+	cp important c1.c &&
 	git add c1.c &&
 	rm c1.c &&
 	test_must_fail git merge c1a &&
+	test_path_is_missing .git/MERGE_HEAD &&
 	git checkout c1.c &&
 	test_cmp important c1.c
 '
-- 
1.7.1.571.gba4d01


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