t7501: always use test_cmp instead of diff

diff --git a/t/t0021-conversion.sh b/t/t0021-conversion.sh
index ad952c9ce2ce2e1a83145b4949c4885e2bdaf47d..8fc39d77cec6168dae930beef785597dace24aa3 100755 (executable)
--- a/t/t0021-conversion.sh
+++ b/t/t0021-conversion.sh
@@ -4,15 +4,26 @@ test_description='blob conversion via gitattributes'
 
 . ./test-lib.sh
 
+cat <<\EOF >rot13.sh
+tr \
+  'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ' \
+  'nopqrstuvwxyzabcdefghijklmNOPQRSTUVWXYZABCDEFGHIJKLM'
+EOF
+chmod +x rot13.sh
+
 test_expect_success setup '
+       git config filter.rot13.smudge ./rot13.sh &&
+       git config filter.rot13.clean ./rot13.sh &&
+
        {
+           echo "*.t filter=rot13"
            echo "*.i ident"
        } >.gitattributes &&
 
        {
            echo a b c d e f g h i j k l m
            echo n o p q r s t u v w x y z
-           echo '\''$ident$'\''
+           echo '\''$Id$'\''
        } >test &&
        cat test >test.t &&
        cat test >test.o &&
@@ -22,7 +33,7 @@ test_expect_success setup '
        git checkout -- test test.t test.i
 '
 
-script='s/^\$ident: \([0-9a-f]*\) \$/\1/p'
+script='s/^\$Id: \([0-9a-f]*\) \$/\1/p'
 
 test_expect_success check '
 
@@ -33,7 +44,48 @@ test_expect_success check '
        git diff --raw --exit-code :test :test.i &&
        id=$(git rev-parse --verify :test) &&
        embedded=$(sed -ne "$script" test.i) &&
-       test "z$id" = "z$embedded"
+       test "z$id" = "z$embedded" &&
+
+       git cat-file blob :test.t > test.r &&
+
+       ./rot13.sh < test.o > test.t &&
+       cmp test.r test.t
+'
+
+# If an expanded ident ever gets into the repository, we want to make sure that
+# it is collapsed before being expanded again on checkout
+test_expect_success expanded_in_repo '
+       {
+               echo "File with expanded keywords"
+               echo "\$Id\$"
+               echo "\$Id:\$"
+               echo "\$Id: 0000000000000000000000000000000000000000 \$"
+               echo "\$Id: NoSpaceAtEnd\$"
+               echo "\$Id:NoSpaceAtFront \$"
+               echo "\$Id:NoSpaceAtEitherEnd\$"
+               echo "\$Id: NoTerminatingSymbol"
+       } > expanded-keywords &&
+
+       {
+               echo "File with expanded keywords"
+               echo "\$Id: 4f21723e7b15065df7de95bd46c8ba6fb1818f4c \$"
+               echo "\$Id: 4f21723e7b15065df7de95bd46c8ba6fb1818f4c \$"
+               echo "\$Id: 4f21723e7b15065df7de95bd46c8ba6fb1818f4c \$"
+               echo "\$Id: 4f21723e7b15065df7de95bd46c8ba6fb1818f4c \$"
+               echo "\$Id: 4f21723e7b15065df7de95bd46c8ba6fb1818f4c \$"
+               echo "\$Id: 4f21723e7b15065df7de95bd46c8ba6fb1818f4c \$"
+               echo "\$Id: NoTerminatingSymbol"
+       } > expected-output &&
+
+       git add expanded-keywords &&
+       git commit -m "File with keywords expanded" &&
+
+       echo "expanded-keywords ident" >> .gitattributes &&
+
+       rm -f expanded-keywords &&
+       git checkout -- expanded-keywords &&
+       cat expanded-keywords &&
+       cmp expanded-keywords expected-output
 '
 
 test_done