support/testing: add netcat runtime test

Signed-off-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

DEVELOPERS

@@ -1793,6 +1793,7 @@ F:	support/testing/tests/package/test_lzop.py
 F:	support/testing/tests/package/test_mtools.py
 F:	support/testing/tests/package/test_mtr.py
 F:	support/testing/tests/package/test_ncdu.py
+F:	support/testing/tests/package/test_netcat.py
 F:	support/testing/tests/package/test_nftables.py
 F:	support/testing/tests/package/test_nftables/
 F:	support/testing/tests/package/test_octave.py

support/testing/tests/package/test_netcat.py

@@ -0,0 +1,41 @@
+import os
+import time
+
+import infra.basetest
+
+
+class TestNetCat(infra.basetest.BRTest):
+    config = infra.basetest.BASIC_TOOLCHAIN_CONFIG + \
+        """
+        BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
+        BR2_PACKAGE_NETCAT=y
+        BR2_TARGET_ROOTFS_CPIO=y
+        # BR2_TARGET_ROOTFS_TAR is not set
+        """
+
+    def test_run(self):
+        cpio_file = os.path.join(self.builddir, "images", "rootfs.cpio")
+        self.emulator.boot(arch="armv5",
+                           kernel="builtin",
+                           options=["-initrd", cpio_file])
+        self.emulator.login()
+
+        self.assertRunOk("nc --version")
+
+        in_file = "input.bin"
+        out_file = "output.bin"
+        port = 12345
+
+        cmd = f"dd if=/dev/urandom of={in_file} bs=1k count=1k"
+        self.assertRunOk(cmd)
+
+        cmd = f"nc -l -p {port} > {out_file} &"
+        self.assertRunOk(cmd)
+
+        time.sleep(1)
+
+        cmd = f"cat {in_file} | nc -c 127.0.0.1 {port}"
+        self.assertRunOk(cmd)
+
+        cmd = f"cmp {in_file} {out_file}"
+        self.assertRunOk(cmd)