t1007: factor out repeated setup

We have a series of 3 CRLF tests that do exactly the same
(long) setup sequence. Let's pull it out into a common setup
test, which is shorter, more efficient, and will make it
easier to add new tests.

Note that we don't have to worry about cleaning up any of
the setup which was previously per-test; we call pop_repo
after the CRLF tests, which cleans up everything.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t1007-hash-object.sh

@@ -101,7 +101,7 @@ test_expect_success 'git hash-object --stdin file1 <file0 first operates on file
 	test "$obname1" = "$obname1new"
 '
 
-test_expect_success 'check that appropriate filter is invoke when --path is used' '
+test_expect_success 'set up crlf tests' '
 	echo fooQ | tr Q "\\015" >file0 &&
 	cp file0 file1 &&
 	echo "file0 -crlf" >.gitattributes &&
@@ -109,7 +109,10 @@ test_expect_success 'check that appropriate filter is invoke when --path is used
 	git config core.autocrlf true &&
 	file0_sha=$(git hash-object file0) &&
 	file1_sha=$(git hash-object file1) &&
-	test "$file0_sha" != "$file1_sha" &&
+	test "$file0_sha" != "$file1_sha"
+'
+
+test_expect_success 'check that appropriate filter is invoke when --path is used' '
 	path1_sha=$(git hash-object --path=file1 file0) &&
 	path0_sha=$(git hash-object --path=file0 file1) &&
 	test "$file0_sha" = "$path0_sha" &&
@@ -117,8 +120,7 @@ test_expect_success 'check that appropriate filter is invoke when --path is used
 	path1_sha=$(cat file0 | git hash-object --path=file1 --stdin) &&
 	path0_sha=$(cat file1 | git hash-object --path=file0 --stdin) &&
 	test "$file0_sha" = "$path0_sha" &&
-	test "$file1_sha" = "$path1_sha" &&
-	git config --unset core.autocrlf
+	test "$file1_sha" = "$path1_sha"
 '
 
 test_expect_success 'gitattributes also work in a subdirectory' '
@@ -133,33 +135,15 @@ test_expect_success 'gitattributes also work in a subdirectory' '
 '
 
 test_expect_success 'check that --no-filters option works' '
-	echo fooQ | tr Q "\\015" >file0 &&
-	cp file0 file1 &&
-	echo "file0 -crlf" >.gitattributes &&
-	echo "file1 crlf" >>.gitattributes &&
-	git config core.autocrlf true &&
-	file0_sha=$(git hash-object file0) &&
-	file1_sha=$(git hash-object file1) &&
-	test "$file0_sha" != "$file1_sha" &&
 	nofilters_file1=$(git hash-object --no-filters file1) &&
 	test "$file0_sha" = "$nofilters_file1" &&
 	nofilters_file1=$(cat file1 | git hash-object --stdin) &&
-	test "$file0_sha" = "$nofilters_file1" &&
-	git config --unset core.autocrlf
+	test "$file0_sha" = "$nofilters_file1"
 '
 
 test_expect_success 'check that --no-filters option works with --stdin-paths' '
-	echo fooQ | tr Q "\\015" >file0 &&
-	cp file0 file1 &&
-	echo "file0 -crlf" >.gitattributes &&
-	echo "file1 crlf" >>.gitattributes &&
-	git config core.autocrlf true &&
-	file0_sha=$(git hash-object file0) &&
-	file1_sha=$(git hash-object file1) &&
-	test "$file0_sha" != "$file1_sha" &&
 	nofilters_file1=$(echo "file1" | git hash-object --stdin-paths --no-filters) &&
-	test "$file0_sha" = "$nofilters_file1" &&
-	git config --unset core.autocrlf
+	test "$file0_sha" = "$nofilters_file1"
 '
 
 pop_repo