[PATCH v2] t7610 (mergetool): more nitpicks

[Jonathan Nieder <jrnieder@gmail.com>]

 - use tabs to indent
 - do not redirect output away unnecessarily
 - avoid a subshell for 'yes "" | git mergetool file3'
 - use test_tick for reproducible, increasing timestamps
 - use test_cmp instead of 'test $foo = bar'; the former is much
   nicer to debug with --verbose since it produces a diff.

Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
---
Jonathan Nieder wrote:

>  test_expect_success 'mergetool crlf' '
>      git config core.autocrlf true &&
> +	test_when_finished "git config --unset core.autocrlf" &&
> +	echo master updated | append_cr >file1.expected &&
> +	echo master new | append_cr >file2.expected &&
> +	echo master new sub | append_cr >sub.expected &&
> +
> -    git checkout -b test2 branch1
> +	git checkout -b test2 branch1 &&
> -    test_must_fail git merge master >/dev/null 2>&1 &&
> +	test_must_fail git merge master &&
> +	test_when_finished "git reset --hard" &&
> -    ( yes "" | git mergetool file1 >/dev/null 2>&1 ) &&
> -    ( yes "" | git mergetool file2 >/dev/null 2>&1 ) &&
> -    ( yes "" | git mergetool subdir/file3 >/dev/null 2>&1 ) &&
> +	yes "" | git mergetool file1 &&
> +	yes "" | git mergetool file2 &&
> +	yes "" | git mergetool subdir/file3 &&
> -    test "$(printf x | cat file1 -)" = "$(printf "master updated\r\nx")" &&
> -    test "$(printf x | cat file2 -)" = "$(printf "master new\r\nx")" &&
> -    test "$(printf x | cat subdir/file3 -)" = "$(printf "master new sub\r\nx")" &&
> +
> +	test_cmp file1.expected file1 &&
> +	test_cmp file2.expected file2 &&
> +	test_cmp sub.expected subdir/file3 &&
> -    git commit -m "branch1 resolved with mergetool - autocrlf" &&
> +
> +	git commit -m "branch1 resolved with mergetool - autocrlf"
> -    git config core.autocrlf false &&
> -    git reset --hard
>  '

As Junio noticed, the net effect is to run "reset --hard" before
the "[core] autocrlf" configuration is removed, which could be
an undesirable behavior change.  So this version runs "reset --hard"
after unsetting autocrlf for good measure.

 t/t7610-mergetool.sh |  187 +++++++++++++++++++++++++++++---------------------
 1 files changed, 108 insertions(+), 79 deletions(-)

diff --git a/t/t7610-mergetool.sh b/t/t7610-mergetool.sh
index 3bd7404..a7f05b0 100755
--- a/t/t7610-mergetool.sh
+++ b/t/t7610-mergetool.sh
@@ -3,112 +3,141 @@
 # Copyright (c) 2008 Charles Bailey
 #
 
-test_description='git mergetool
+test_description='Testing basic merge tool invocation
 
-Testing basic merge tool invocation'
+All the mergetool tests work by checking out a temporary branch based
+off branch1 and then merging in master and checking the results of
+running mergetool.
+'
 
 . ./test-lib.sh
 
-# All the mergetool test work by checking out a temporary branch based
-# off 'branch1' and then merging in master and checking the results of
-# running mergetool
-
 test_expect_success 'setup' '
-    git config rerere.enabled true &&
-    echo master >file1 &&
-    mkdir subdir &&
-    echo master sub >subdir/file3 &&
-    git add file1 subdir/file3 &&
-    git commit -m "added file1" &&
+	git config rerere.enabled true &&
+	echo master >file1 &&
+	mkdir subdir &&
+	echo master sub >subdir/file3 &&
+	git add file1 subdir/file3 &&
+	test_tick &&
+	git commit -m "added file1" &&
 
-    git checkout -b branch1 master &&
-    echo branch1 change >file1 &&
-    echo branch1 newfile >file2 &&
-    echo branch1 sub >subdir/file3 &&
-    git add file1 file2 subdir/file3 &&
-    git commit -m "branch1 changes" &&
+	git checkout -b branch1 master &&
+	echo branch1 change >file1 &&
+	echo branch1 newfile >file2 &&
+	echo branch1 sub >subdir/file3 &&
+	git add file1 file2 subdir/file3 &&
+	test_tick &&
+	git commit -m "branch1 changes" &&
 
-    git checkout master &&
-    echo master updated >file1 &&
-    echo master new >file2 &&
-    echo master new sub >subdir/file3 &&
-    git add file1 file2 subdir/file3 &&
-    git commit -m "master updates" &&
+	git checkout master &&
+	echo master updated >file1 &&
+	echo master new >file2 &&
+	echo master new sub >subdir/file3 &&
+	git add file1 file2 subdir/file3 &&
+	test_tick &&
+	git commit -m "master updates" &&
 
-    git config merge.tool mytool &&
-    git config mergetool.mytool.cmd "cat \"\$REMOTE\" >\"\$MERGED\"" &&
-    git config mergetool.mytool.trustExitCode true
+	git config merge.tool mytool &&
+	git config mergetool.mytool.cmd "cat \"\$REMOTE\" >\"\$MERGED\"" &&
+	git config mergetool.mytool.trustExitCode true
 '
 
 test_expect_success 'custom mergetool' '
-    git checkout -b test1 branch1 &&
-    test_must_fail git merge master >/dev/null 2>&1 &&
-    ( yes "" | git mergetool file1 >/dev/null 2>&1 ) &&
-    ( yes "" | git mergetool file2 >/dev/null 2>&1 ) &&
-    ( yes "" | git mergetool subdir/file3 >/dev/null 2>&1 ) &&
-    test "$(cat file1)" = "master updated" &&
-    test "$(cat file2)" = "master new" &&
-    test "$(cat subdir/file3)" = "master new sub" &&
-    git commit -m "branch1 resolved with mergetool"
+	echo master updated >file1.expected &&
+	echo master new >file2.expected &&
+	echo master new sub >sub.expected &&
+
+	git checkout -b test1 branch1 &&
+	test_must_fail git merge master &&
+	yes "" | git mergetool file1 &&
+	yes "" | git mergetool file2 &&
+	yes "" | git mergetool subdir/file3 &&
+
+	test_cmp file1.expected file1 &&
+	test_cmp file2.expected file2 &&
+	test_cmp sub.expected subdir/file3 &&
+
+	git commit -m "branch1 resolved with mergetool"
 '
 
 test_expect_success 'mergetool crlf' '
-    git config core.autocrlf true &&
-    git checkout -b test2 branch1
-    test_must_fail git merge master >/dev/null 2>&1 &&
-    ( yes "" | git mergetool file1 >/dev/null 2>&1 ) &&
-    ( yes "" | git mergetool file2 >/dev/null 2>&1 ) &&
-    ( yes "" | git mergetool subdir/file3 >/dev/null 2>&1 ) &&
-    test "$(printf x | cat file1 -)" = "$(printf "master updated\r\nx")" &&
-    test "$(printf x | cat file2 -)" = "$(printf "master new\r\nx")" &&
-    test "$(printf x | cat subdir/file3 -)" = "$(printf "master new sub\r\nx")" &&
-    git commit -m "branch1 resolved with mergetool - autocrlf" &&
-    git config core.autocrlf false &&
-    git reset --hard
+	git config core.autocrlf true &&
+	test_when_finished "
+		git config --unset core.autocrlf &&
+		git reset --hard
+	" &&
+	echo master updated | append_cr >file1.expected &&
+	echo master new | append_cr >file2.expected &&
+	echo master new sub | append_cr >sub.expected &&
+
+	git checkout -b test2 branch1 &&
+	test_must_fail git merge master &&
+	test_when_finished "git reset --hard" &&
+	yes "" | git mergetool file1 &&
+	yes "" | git mergetool file2 &&
+	yes "" | git mergetool subdir/file3 &&
+
+	test_cmp file1.expected file1 &&
+	test_cmp file2.expected file2 &&
+	test_cmp sub.expected subdir/file3 &&
+
+	git commit -m "branch1 resolved with mergetool - autocrlf"
 '
 
 test_expect_success 'mergetool in subdir' '
-    git checkout -b test3 branch1 &&
-    (
-	cd subdir &&
-	test_must_fail git merge master >/dev/null 2>&1 &&
-	( yes "" | git mergetool file3 >/dev/null 2>&1 ) &&
-	test "$(cat file3)" = "master new sub"
-    )
+	echo master new sub >sub.expected &&
+	git checkout -b test3 branch1 &&
+	(
+		cd subdir &&
+		test_must_fail git merge master &&
+		yes "" | git mergetool file3 &&
+		test_cmp ../sub.expected file3
+	)
 '
 
 test_expect_success 'mergetool on file in parent dir' '
-    (
-	cd subdir &&
-	( yes "" | git mergetool ../file1 >/dev/null 2>&1 ) &&
-	( yes "" | git mergetool ../file2 >/dev/null 2>&1 ) &&
-	test "$(cat ../file1)" = "master updated" &&
-	test "$(cat ../file2)" = "master new" &&
-	git commit -m "branch1 resolved with mergetool - subdir"
-    )
+	echo master updated >file1.expected &&
+	echo master new >file2.expected &&
+	(
+		cd subdir &&
+		yes "" | git mergetool ../file1 &&
+		yes "" | git mergetool ../file2 &&
+		test_cmp ../file1.expected ../file1 &&
+		test_cmp ../file2.expected ../file2 &&
+		git commit -m "branch1 resolved with mergetool - subdir"
+	)
 '
 
 test_expect_success 'mergetool skips autoresolved' '
-    git checkout -b test4 branch1 &&
-    test_must_fail git merge master &&
-    test -n "$(git ls-files -u)" &&
-    output="$(git mergetool --no-prompt)" &&
-    test "$output" = "No files need merging" &&
-    git reset --hard
+	echo "No files need merging" >expected &&
+	git checkout -b test4 branch1 &&
+	test_must_fail git merge master &&
+	test_when_finished "git reset --hard" &&
+	test_must_fail git update-index --refresh &&
+	git mergetool --no-prompt >actual &&
+	test_cmp expected actual
 '
 
 test_expect_success 'mergetool merges all from subdir' '
-    (
-	cd subdir &&
+	echo master updated >file1.expected &&
+	echo master new >file2.expected &&
+	echo master new sub >sub.expected &&
+
 	git config rerere.enabled false &&
-	test_must_fail git merge master &&
-	git mergetool --no-prompt &&
-	test "$(cat ../file1)" = "master updated" &&
-	test "$(cat ../file2)" = "master new" &&
-	test "$(cat file3)" = "master new sub" &&
-	git add ../file1 ../file2 file3 &&
-	git commit -m "branch2 resolved by mergetool from subdir"
-    )
+	test_when_finished "git config rerere.enabled true" &&
+	mv .git/rr-cache .git/rr-cache-moved &&
+	test_when_finished "mv .git/rr-cache-moved .git/rr-cache" &&
+	(
+		cd subdir &&
+		test_must_fail git merge master &&
+		test_when_finished "git reset --hard" &&
+		git mergetool --no-prompt &&
+		test_cmp ../file1.expected ../file1 &&
+		test_cmp ../file2.expected ../file2 &&
+		test_cmp ../sub.expected file3 &&
+		git add ../file1 ../file2 file3 &&
+		git commit -m "branch2 resolved by mergetool from subdir"
+	)
 '
 
 test_done
-- 
1.7.2.2