t9350: fix encoding test to actually test reencoding

This test used an author with non-ascii characters in the name, but
no special commit message.  It then grep'ed for those non-ascii
characters, but those are guaranteed to exist regardless of the
reencoding process since the reencoding only affects the commit message,
not the author or committer names.  As such, the test would work even if
the re-encoding process simply stripped the commit message entirely.
Modify the test to actually check that the reencoding in utf-8 worked.

Signed-off-by: Elijah Newren <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: newren

t/t9350-fast-export.sh

@@ -94,22 +94,32 @@ test_expect_success 'fast-export --show-original-ids | git fast-import' '
 	test $MUSS = $(git rev-parse --verify refs/tags/muss)
 '
 
-test_expect_success 'iso-8859-1' '
+test_expect_success 'iso-8859-7' '
 
-	git config i18n.commitencoding ISO8859-1 &&
-	# use author and committer name in ISO-8859-1 to match it.
-	. "$TEST_DIRECTORY"/t3901/8859-1.txt &&
+	test_when_finished "git reset --hard HEAD~1" &&
+	test_config i18n.commitencoding iso-8859-7 &&
 	test_tick &&
 	echo rosten >file &&
-	git commit -s -m den file &&
-	git fast-export wer^..wer >iso8859-1.fi &&
-	sed "s/wer/i18n/" iso8859-1.fi |
+	git commit -s -F "$TEST_DIRECTORY/t9350/simple-iso-8859-7-commit-message.txt" file &&
+	git fast-export wer^..wer >iso-8859-7.fi &&
+	sed "s/wer/i18n/" iso-8859-7.fi |
 		(cd new &&
 		 git fast-import &&
+		 # The commit object, if not re-encoded, would be 240 bytes.
+		 # Removing the "encoding iso-8859-7\n" header drops 20 bytes.
+		 # Re-encoding the Pi character from \xF0 in iso-8859-7 to
+		 # \xCF\x80 in utf-8 adds a byte.  Grepping for specific bytes
+		 # would be nice, but Windows apparently munges user data
+		 # in the form of bytes on the command line to force them to
+		 # be characters instead, so we are limited for portability
+		 # reasons in subsequent similar tests in this file to check
+		 # for size rather than what bytes are present.
+		 test 221 -eq "$(git cat-file -s i18n)" &&
+		 # Also make sure the commit does not have the "encoding" header
 		 git cat-file commit i18n >actual &&
-		 grep "Áéí óú" actual)
-
+		 ! grep ^encoding actual)
 '
+
 test_expect_success 'import/export-marks' '
 
 	git checkout -b marks master &&
@@ -224,7 +234,6 @@ GIT_COMMITTER_NAME='C O Mitter'; export GIT_COMMITTER_NAME
 
 test_expect_success 'setup copies' '
 
-	git config --unset i18n.commitencoding &&
 	git checkout -b copy rein &&
 	git mv file file3 &&
 	git commit -m move1 &&

t/t9350/simple-iso-8859-7-commit-message.txt

@@ -0,0 +1 @@
+Pi: �