add a basic test for unwant

License: MIT
Signed-off-by: Jeromy <jeromyj@gmail.com>

test/sharness/t0220-bitswap.sh

+#!/bin/sh
+#
+# Copyright (c) 2015 Jeromy Johnson
+# MIT Licensed; see the LICENSE file in this repository.
+#
+
+test_description="test bitswap commands"
+
+. lib/test-lib.sh
+
+test_init_ipfs
+test_launch_ipfs_daemon
+
+test_expect_success "'ipfs block get' adds hash to wantlist" '
+	export NONEXIST=QmeXxaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa &&
+	test_expect_code 1 ipfs block get $NONEXIST --timeout=10ms &&
+	ipfs bitswap wantlist | grep $NONEXIST
+'
+
+test_expect_success "'ipfs bitswap unwant' succeeds" '
+	ipfs bitswap unwant $NONEXIST
+'
+
+test_expect_success "hash was removed from wantlist" '
+	ipfs bitswap wantlist > wantlist_out &&
+	printf "" > wantlist_exp &&
+	test_cmp wantlist_out wantlist_exp
+'
+
+test_kill_ipfs_daemon
+
+test_done