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-rwxr-xr-xt/t1051-large-conversion.sh26
1 files changed, 26 insertions, 0 deletions
diff --git a/t/t1051-large-conversion.sh b/t/t1051-large-conversion.sh
index 8b7640b3ba..042b0e4429 100755
--- a/t/t1051-large-conversion.sh
+++ b/t/t1051-large-conversion.sh
@@ -83,4 +83,30 @@ test_expect_success 'ident converts on output' '
test_cmp small.clean large.clean
'
+# This smudge filter prepends 5GB of zeros to the file it checks out. This
+# ensures that smudging doesn't mangle large files on 64-bit Windows.
+test_expect_success EXPENSIVE,SIZE_T_IS_64BIT,!LONG_IS_64BIT \
+ 'files over 4GB convert on output' '
+ test_commit test small "a small file" &&
+ small_size=$(test_file_size small) &&
+ test_config filter.makelarge.smudge \
+ "test-tool genzeros $((5*1024*1024*1024)) && cat" &&
+ echo "small filter=makelarge" >.gitattributes &&
+ rm small &&
+ git checkout -- small &&
+ size=$(test_file_size small) &&
+ test "$size" -eq $((5 * 1024 * 1024 * 1024 + $small_size))
+'
+
+# This clean filter writes down the size of input it receives. By checking against
+# the actual size, we ensure that cleaning doesn't mangle large files on 64-bit Windows.
+test_expect_success EXPENSIVE,SIZE_T_IS_64BIT,!LONG_IS_64BIT \
+ 'files over 4GB convert on input' '
+ test-tool genzeros $((5*1024*1024*1024)) >big &&
+ test_config filter.checklarge.clean "wc -c >big.size" &&
+ echo "big filter=checklarge" >.gitattributes &&
+ git add big &&
+ test $(test_file_size big) -eq $(cat big.size)
+'
+
test_done