Add reversible gc test

License: MIT
Signed-off-by: rht <rhtbot@gmail.com>

test/sharness/lib/test-lib.sh

@@ -314,3 +314,19 @@ test_str_contains() {
 	shift
 	echo "$@" | grep "$find" >/dev/null
 }
+
+disk_usage() {
+    # normalize du across systems
+    case $(uname -s) in
+        Linux)
+            DU="du -sb"
+            ;;
+        FreeBSD)
+            DU="du -s -A -B 1"
+            ;;
+        Darwin | DragonFly)
+            DU="du"
+            ;;
+    esac
+        $DU "$1" | awk "{print \$1}"
+}

test/sharness/t0080-repo.sh

@@ -44,6 +44,16 @@ test_expect_success "'ipfs pin rm' output looks good" '
 	test_cmp expected1 actual1
 '
 
+test_expect_failure "ipfs repo gc fully reverse ipfs add" '
+    random 100000 41 >gcfile &&
+    disk_usage "$IPFS_PATH/blocks" >expected &&
+    hash=`ipfs add -q gcfile` &&
+    ipfs pin rm -r $hash &&
+    ipfs repo gc &&
+    disk_usage "$IPFS_PATH/blocks" >actual &&
+    test_cmp expected actual
+'
+
 test_expect_success "file no longer pinned" '
 	# we expect the welcome files and gw assets to show up here
 	echo "$HASH_WELCOME_DOCS" >expected2 &&