test-lib: add in-shell "env" replacement

diff --git a/t/t0021-conversion.sh b/t/t0021-conversion.sh
index e9f1626b091c53a5509be9b276ee0f1d7f67aa3d..7bac2bcf260794bbfeb795b210ed0c9eceb45937 100755 (executable)
--- a/t/t0021-conversion.sh
+++ b/t/t0021-conversion.sh
@@ -204,6 +204,16 @@ test_expect_success 'filtering large input to small output should use little mem
        GIT_MMAP_LIMIT=1m GIT_ALLOC_LIMIT=1m git add 30MB
 '
 
+test_expect_success 'filter that does not read is fine' '
+       test-genrandom foo $((128 * 1024 + 1)) >big &&
+       echo "big filter=epipe" >.gitattributes &&
+       git config filter.epipe.clean "echo xyzzy" &&
+       git add big &&
+       git cat-file blob :big >actual &&
+       echo xyzzy >expect &&
+       test_cmp expect actual
+'
+
 test_expect_success EXPENSIVE 'filter large file' '
        git config filter.largefile.smudge cat &&
        git config filter.largefile.clean cat &&
@@ -242,4 +252,20 @@ test_expect_success "filter: smudge empty file" '
        test_cmp expected filtered-empty-in-repo
 '
 
+test_expect_success 'disable filter with empty override' '
+       test_config_global filter.disable.smudge false &&
+       test_config_global filter.disable.clean false &&
+       test_config filter.disable.smudge false &&
+       test_config filter.disable.clean false &&
+
+       echo "*.disable filter=disable" >.gitattributes &&
+
+       echo test >test.disable &&
+       git -c filter.disable.clean= add test.disable 2>err &&
+       test_must_be_empty err &&
+       rm -f test.disable &&
+       git -c filter.disable.smudge= checkout -- test.disable 2>err &&
+       test_must_be_empty err
+'
+
 test_done