support/testing: add s6-portable-utils tests

Test that a few basis utilities are working.

Signed-off-by: Dick Olsson <hi@senzilla.io>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
[Arnout: indent config lines more]

support/testing/tests/package/test_s6_portable_utils.py

@@ -0,0 +1,32 @@
+import os
+
+import infra.basetest
+
+
+class TestS6PortableUtils(infra.basetest.BRTest):
+    config = infra.basetest.BASIC_TOOLCHAIN_CONFIG + \
+        """
+        BR2_PACKAGE_S6_PORTABLE_UTILS=y
+        BR2_TARGET_ROOTFS_CPIO=y
+        # BR2_TARGET_ROOTFS_TAR is not set
+        """
+
+    def test_run(self):
+        img = os.path.join(self.builddir, "images", "rootfs.cpio")
+        self.emulator.boot(arch="armv5",
+                           kernel="builtin",
+                           options=["-initrd", img])
+        self.emulator.login()
+
+        output, exit_code = self.emulator.run("s6-basename /sbin/init")
+        self.assertEqual(exit_code, 0)
+        self.assertEqual(output[0].strip(), "init")
+
+        output, exit_code = self.emulator.run("s6-echo hello world | s6-cut -d' ' -f2")
+        self.assertEqual(exit_code, 0)
+        self.assertEqual(output[0].strip(), "world")
+
+        _, exit_code = self.emulator.run("s6-mkfifo testpipe")
+        self.assertEqual(exit_code, 0)
+        _, exit_code = self.emulator.run("s6-test -p testpipe")
+        self.assertEqual(exit_code, 0)