TFTPFS: Add tests

Update #4666.

spec/build/testsuites/fstests/grp.yml

@@ -138,6 +138,8 @@ links:
   uid: mrfsfssymlink
 - role: build-dependency
   uid: mrfsfstime
+- role: build-dependency
+  uid: tftpfs
 type: build
 use-after: []
 use-before:

spec/build/testsuites/fstests/tftpfs.yml

@@ -0,0 +1,25 @@
+SPDX-License-Identifier: CC-BY-SA-4.0 OR BSD-2-Clause
+build-type: test-program
+cflags: []
+copyrights:
+- Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de)
+cppflags: []
+cxxflags: []
+enabled-by: true
+features: c cprogram
+includes:
+- cpukit/libfs/src/ftpfs
+ldflags:
+- -Wl,--wrap=close
+links: []
+source:
+- cpukit/libtest/testwrappers.c
+- testsuites/fstests/tftpfs/init.c
+- testsuites/fstests/tftpfs/tftpfs_udp_network_fake.c
+- testsuites/fstests/tftpfs/tftpfs_interactions.c
+stlib:
+- tftpfs
+target: testsuites/fstests/tftpfs.exe
+type: build
+use-after: []
+use-before: []