1 files changed, 104 insertions, 0 deletions
diff --git a/t/t1060-object-corruption.sh b/t/t1060-object-corruption.sh
new file mode 100755
index 0000000..3f87051
--- /dev/null
+++ b/t/t1060-object-corruption.sh
@@ -0,0 +1,104 @@
+#!/bin/sh
+
+test_description='see how we handle various forms of corruption'
+. ./test-lib.sh
+
+# convert "1234abcd" to ".git/objects/12/34abcd"
+obj_to_file() {
+	echo "$(git rev-parse --git-dir)/objects/$(git rev-parse "$1" | sed 's,..,&/,')"
+}
+
+# Convert byte at offset "$2" of object "$1" into '\0'
+corrupt_byte() {
+	obj_file=$(obj_to_file "$1") &&
+	chmod +w "$obj_file" &&
+	printf '\0' | dd of="$obj_file" bs=1 seek="$2" conv=notrunc
+}
+
+test_expect_success 'setup corrupt repo' '
+	git init bit-error &&
+	(
+		cd bit-error &&
+		test_commit content &&
+		corrupt_byte HEAD:content.t 10
+	)
+'
+
+test_expect_success 'setup repo with missing object' '
+	git init missing &&
+	(
+		cd missing &&
+		test_commit content &&
+		rm -f "$(obj_to_file HEAD:content.t)"
+	)
+'
+
+test_expect_success 'setup repo with misnamed object' '
+	git init misnamed &&
+	(
+		cd misnamed &&
+		test_commit content &&
+		good=$(obj_to_file HEAD:content.t) &&
+		blob=$(echo corrupt | git hash-object -w --stdin) &&
+		bad=$(obj_to_file $blob) &&
+		rm -f "$good" &&
+		mv "$bad" "$good"
+	)
+'
+
+test_expect_success 'streaming a corrupt blob fails' '
+	(
+		cd bit-error &&
+		test_must_fail git cat-file blob HEAD:content.t
+	)
+'
+
+test_expect_success 'read-tree -u detects bit-errors in blobs' '
+	(
+		cd bit-error &&
+		rm -f content.t &&
+		test_must_fail git read-tree --reset -u HEAD
+	)
+'
+
+test_expect_success 'read-tree -u detects missing objects' '
+	(
+		cd missing &&
+		rm -f content.t &&
+		test_must_fail git read-tree --reset -u HEAD
+	)
+'
+
+# We use --bare to make sure that the transport detects it, not the checkout
+# phase.
+test_expect_success 'clone --no-local --bare detects corruption' '
+	test_must_fail git clone --no-local --bare bit-error corrupt-transport
+'
+
+test_expect_success 'clone --no-local --bare detects missing object' '
+	test_must_fail git clone --no-local --bare missing missing-transport
+'
+
+test_expect_success 'clone --no-local --bare detects misnamed object' '
+	test_must_fail git clone --no-local --bare misnamed misnamed-transport
+'
+
+# We do not expect --local to detect corruption at the transport layer,
+# so we are really checking the checkout() code path.
+test_expect_success 'clone --local detects corruption' '
+	test_must_fail git clone --local bit-error corrupt-checkout
+'
+
+test_expect_success 'error detected during checkout leaves repo intact' '
+	test_path_is_dir corrupt-checkout/.git
+'
+
+test_expect_success 'clone --local detects missing objects' '
+	test_must_fail git clone --local missing missing-checkout
+'
+
+test_expect_failure 'clone --local detects misnamed objects' '
+	test_must_fail git clone --local misnamed misnamed-checkout
+'
+
+test_done