Bump buidlroot version to 2018.02.6

bsp/buildroot/support/testing/tests/init/test_none.py

@@ -0,0 +1,33 @@
+import pexpect
+
+import infra.basetest
+from tests.init.base import InitSystemBase as InitSystemBase
+
+
+class TestInitSystemNone(InitSystemBase):
+    config = infra.basetest.BASIC_TOOLCHAIN_CONFIG + \
+        """
+        BR2_INIT_NONE=y
+        # BR2_TARGET_ROOTFS_TAR is not set
+        BR2_TARGET_ROOTFS_SQUASHFS=y
+        """
+
+    def test_run(self):
+        self.start_emulator(fs_type="squashfs", init="/bin/sh")
+        index = self.emulator.qemu.expect(["/bin/sh: can't access tty; job control turned off", pexpect.TIMEOUT], timeout=60)
+        if index != 0:
+            self.emulator.logfile.write("==> System does not boot")
+            raise SystemError("System does not boot")
+        index = self.emulator.qemu.expect(["#", pexpect.TIMEOUT], timeout=60)
+        if index != 0:
+            self.emulator.logfile.write("==> System does not boot")
+            raise SystemError("System does not boot")
+
+        out, exit_code = self.emulator.run("sh -c 'echo $PPID'")
+        self.assertEqual(exit_code, 0)
+        self.assertEqual(out[0], "1")
+
+        _, exit_code = self.emulator.run("mount -t proc none /proc")
+        self.assertEqual(exit_code, 0)
+
+        self.check_init("/bin/sh")