t4205, t6006, t7102: make functions better readable

Function 'test_format' has become harder to read after its change in
de6029a (pretty: Add failing tests: --format output should honor
logOutputEncoding, 2013-06-26). Simplify it by moving its "should we
expect it to fail?" parameter to the end.

Note, current code does not use this last parameter as far as there
are no tests expected to fail. We can keep that for future use.

Also, reformat comments.

Signed-off-by: Alexey Shumkin <Alex.Crezoff@gmail.com>
Improved-by: Johannes Sixt <j.sixt@viscovery.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t4205-log-pretty-formats.sh

@@ -8,7 +8,8 @@ test_description='Test pretty formats'
 . ./test-lib.sh
 
 commit_msg () {
-	# String "initial. initial" partly in German (translated with Google Translate),
+	# String "initial. initial" partly in German
+	# (translated with Google Translate),
 	# encoded in UTF-8, used as a commit log message below.
 	msg=$(printf "initial. anf\303\244nglich")
 	if test -n "$1"

t/t6006-rev-list-format.sh

@@ -9,8 +9,9 @@ test_description='git rev-list --pretty=format test'
 . "$TEST_DIRECTORY"/lib-terminal.sh
 
 test_tick
-# String "added" in German (translated with Google Translate), encoded in UTF-8,
-# used as a commit log message below.
+# String "added" in German
+# (translated with Google Translate),
+# encoded in UTF-8, used as a commit log message below.
 added=$(printf "added (hinzugef\303\274gt) foo")
 added_iso88591=$(echo "$added" | iconv -f utf-8 -t iso8859-1)
 # same but "changed"
@@ -35,26 +36,13 @@ test_expect_success 'setup' '
 	git config --unset i18n.commitEncoding
 '
 
-# usage: test_format [failure] name format_string <expected_output
+# usage: test_format name format_string [failure] <expected_output
 test_format () {
-	must_fail=0
-	# if parameters count is more than 2 then test must fail
-	if test $# -gt 2
-	then
-		must_fail=1
-		# remove first parameter which is flag for test failure
-		shift
-	fi
 	cat >expect.$1
-	name="format $1"
-	command="git rev-list --pretty=format:'$2' master >output.$1 &&
-		test_cmp expect.$1 output.$1"
-	if test $must_fail -eq 1
-	then
-		test_expect_failure "$name" "$command"
-	else
-		test_expect_success "$name" "$command"
-	fi
+	test_expect_${3:-success} "format $1" "
+		git rev-list --pretty=format:'$2' master >output.$1 &&
+		test_cmp expect.$1 output.$1
+	"
 }
 
 # Feed to --format to provide predictable colored sequences.

t/t7102-reset.sh

@@ -10,14 +10,16 @@ Documented tests for git reset'
 . ./test-lib.sh
 
 commit_msg () {
-	# String "modify 2nd file (changed)" partly in German(translated with Google Translate),
+	# String "modify 2nd file (changed)" partly in German
+	# (translated with Google Translate),
 	# encoded in UTF-8, used as a commit log message below.
-	msg=$(printf "modify 2nd file (ge\303\244ndert)")
+	msg="modify 2nd file (ge\303\244ndert)\n"
 	if test -n "$1"
 	then
-		msg=$(echo $msg | iconv -f utf-8 -t $1)
+		printf "$msg" | iconv -f utf-8 -t "$1"
+	else
+		printf "$msg"
 	fi
-	echo $msg
 }
 
 test_expect_success 'creating initial files and commits' '