test: add sharness test for reading ADLs with FUSE

test/sharness/lib/test-lib.sh

@@ -287,7 +287,7 @@ test_launch_ipfs_daemon_without_network() {
 
 do_umount() {
   if [ "$(uname -s)" = "Linux" ]; then
-  fusermount -u "$1"
+  fusermount -z -u "$1"
   else
   umount "$1"
   fi

test/sharness/t0032-mount-sharded.sh

@@ -0,0 +1,68 @@
+#!/usr/bin/env bash
+#
+# Copyright (c) 2021 Protocol Labs
+# MIT Licensed; see the LICENSE file in this repository.
+#
+
+test_description="Test mount command with sharding enabled"
+
+. lib/test-lib.sh
+
+if ! test_have_prereq FUSE; then
+  skip_all='skipping mount sharded tests, fuse not available'
+  test_done
+fi
+
+test_init_ipfs
+
+test_expect_success 'enable sharding' '
+  ipfs config --json Experimental.ShardingEnabled true
+'
+
+test_launch_ipfs_daemon
+test_mount_ipfs
+
+# we're testing nested subdirs which ensures that IPLD ADLs work
+test_expect_success 'setup test data' '
+  mkdir testdata &&
+  echo a > testdata/a &&
+  mkdir testdata/subdir &&
+  echo b > testdata/subdir/b
+'
+
+HASH=QmY59Ufw8zA2BxGPMTcfXg86JVed81Qbxeq5rDkHWSLN1m
+
+test_expect_success 'can add the data' '
+  echo $HASH > expected_hash &&
+  ipfs add -r -Q testdata > actual_hash &&
+  test_cmp expected_hash actual_hash
+'
+
+test_expect_success 'can read the data' '
+  echo a > expected_a &&
+  cat "ipfs/$HASH/a" > actual_a &&
+  test_cmp expected_a actual_a &&
+  echo b > expected_b &&
+  cat "ipfs/$HASH/subdir/b" > actual_b &&
+  test_cmp expected_b actual_b
+'
+
+test_expect_success 'can list directories' '
+  printf "a\nsubdir\n" > expected_ls &&
+  ls -1 "ipfs/$HASH" > actual_ls &&
+  test_cmp expected_ls actual_ls &&
+  printf "b\n" > expected_ls_subdir &&
+  ls -1 "ipfs/$HASH/subdir" > actual_ls_subdir &&
+  test_cmp expected_ls_subdir actual_ls_subdir
+'
+
+test_expect_success "unmount" '
+  do_umount "$(pwd)/ipfs" &&
+  do_umount "$(pwd)/ipns"
+'
+
+test_expect_success 'cleanup' 'rmdir ipfs ipns'
+
+test_kill_ipfs_daemon
+
+test_done