[Buildroot] [PATCH] support/testing: add docker / docker-compose tests

[Peter Korsgaard <peter@korsgaard.com>]

Build for x86-64 as public containers in general are only available for
x86-64.  Docker needs a number of kernel options enabled, so use a custom
kernel config based on the qemu one.

Docker needs entropy at startup, so enable the virtio-rng-pci device to
expose entropy to the guest.  The default RAM amount (128M) is not enough to
run docker / docker-compose, so bump to 512MB.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
---
 .gitlab-ci.yml                                     |   1 +
 support/testing/conf/docker-compose-kernel.config  | 103 +++++++++++++++++++++
 support/testing/conf/docker-compose.yml            |   4 +
 .../testing/tests/package/test_docker_compose.py   |  70 ++++++++++++++
 4 files changed, 178 insertions(+)
 create mode 100644 support/testing/conf/docker-compose-kernel.config
 create mode 100644 support/testing/conf/docker-compose.yml
 create mode 100644 support/testing/tests/package/test_docker_compose.py

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 8f1e4ae804..69d6291039 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -318,6 +318,7 @@ tests.init.test_systemd.TestInitSystemSystemdRwFull: *runtime_test
 tests.init.test_systemd.TestInitSystemSystemdRwIfupdown: *runtime_test
 tests.init.test_systemd.TestInitSystemSystemdRwNetworkd: *runtime_test
 tests.package.test_atop.TestAtop: *runtime_test
+tests.package.test_docker_compose.TestDockerCompose: *runtime_test
 tests.package.test_dropbear.TestDropbear: *runtime_test
 tests.package.test_ipython.TestIPythonPy2: *runtime_test
 tests.package.test_ipython.TestIPythonPy3: *runtime_test
diff --git a/support/testing/conf/docker-compose-kernel.config b/support/testing/conf/docker-compose-kernel.config
new file mode 100644
index 0000000000..9468ef8db8
--- /dev/null
+++ b/support/testing/conf/docker-compose-kernel.config
@@ -0,0 +1,103 @@
+# CONFIG_SWAP is not set
+CONFIG_SYSVIPC=y
+CONFIG_POSIX_MQUEUE=y
+# CONFIG_CROSS_MEMORY_ATTACH is not set
+CONFIG_HIGH_RES_TIMERS=y
+CONFIG_CGROUPS=y
+CONFIG_MEMCG=y
+CONFIG_BLK_CGROUP=y
+CONFIG_CGROUP_SCHED=y
+CONFIG_CGROUP_PIDS=y
+CONFIG_CGROUP_FREEZER=y
+CONFIG_CGROUP_DEVICE=y
+CONFIG_CGROUP_CPUACCT=y
+# CONFIG_COMPAT_BRK is not set
+# CONFIG_X86_EXTENDED_PLATFORM is not set
+CONFIG_IOSF_MBI=y
+CONFIG_MCORE2=y
+# CONFIG_X86_MCE is not set
+# CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS is not set
+CONFIG_LEGACY_VSYSCALL_NONE=y
+# CONFIG_SUSPEND is not set
+# CONFIG_ACPI is not set
+CONFIG_CPU_IDLE=y
+CONFIG_PCI_MSI=y
+# CONFIG_VIRTUALIZATION is not set
+# CONFIG_IOSCHED_CFQ is not set
+# CONFIG_MQ_IOSCHED_DEADLINE is not set
+# CONFIG_MQ_IOSCHED_KYBER is not set
+# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
+CONFIG_TRANSPARENT_HUGEPAGE=y
+CONFIG_NET=y
+CONFIG_PACKET=y
+CONFIG_UNIX=y
+CONFIG_INET=y
+CONFIG_IP_MULTICAST=y
+CONFIG_IP_ADVANCED_ROUTER=y
+# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
+# CONFIG_INET_XFRM_MODE_TUNNEL is not set
+# CONFIG_INET_XFRM_MODE_BEET is not set
+# CONFIG_IPV6 is not set
+CONFIG_NETFILTER=y
+CONFIG_NF_CONNTRACK=y
+# CONFIG_NF_CONNTRACK_PROCFS is not set
+# CONFIG_NF_CT_PROTO_DCCP is not set
+# CONFIG_NF_CT_PROTO_SCTP is not set
+# CONFIG_NF_CT_PROTO_UDPLITE is not set
+CONFIG_NETFILTER_XT_MATCH_ADDRTYPE=y
+CONFIG_NETFILTER_XT_MATCH_CONNTRACK=y
+CONFIG_NETFILTER_XT_MATCH_IPVS=y
+CONFIG_IP_VS=y
+CONFIG_IP_VS_RR=y
+CONFIG_IP_VS_NFCT=y
+CONFIG_IP_NF_IPTABLES=y
+CONFIG_IP_NF_FILTER=y
+CONFIG_IP_NF_NAT=y
+CONFIG_IP_NF_TARGET_MASQUERADE=y
+CONFIG_BRIDGE=y
+# CONFIG_BRIDGE_IGMP_SNOOPING is not set
+# CONFIG_WIRELESS is not set
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+CONFIG_VIRTIO_BLK=y
+CONFIG_NETDEVICES=y
+CONFIG_DUMMY=y
+CONFIG_MACVLAN=y
+CONFIG_VXLAN=y
+CONFIG_VETH=y
+CONFIG_VIRTIO_NET=y
+# CONFIG_ETHERNET is not set
+# CONFIG_WLAN is not set
+# CONFIG_INPUT_KEYBOARD is not set
+# CONFIG_INPUT_MOUSE is not set
+# CONFIG_SERIO is not set
+CONFIG_VT_HW_CONSOLE_BINDING=y
+# CONFIG_DEVMEM is not set
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_8250_CONSOLE=y
+# CONFIG_SERIAL_8250_LPSS is not set
+# CONFIG_SERIAL_8250_MID is not set
+# CONFIG_HW_RANDOM_INTEL is not set
+# CONFIG_HW_RANDOM_AMD is not set
+# CONFIG_HW_RANDOM_VIA is not set
+CONFIG_HW_RANDOM_VIRTIO=y
+# CONFIG_DEVPORT is not set
+# CONFIG_HWMON is not set
+# CONFIG_USB_SUPPORT is not set
+CONFIG_RTC_CLASS=y
+CONFIG_VIRTIO_PCI=y
+# CONFIG_VIRTIO_PCI_LEGACY is not set
+# CONFIG_X86_PLATFORM_DEVICES is not set
+# CONFIG_IOMMU_SUPPORT is not set
+CONFIG_EXT4_FS=y
+CONFIG_OVERLAY_FS=y
+CONFIG_OVERLAY_FS_REDIRECT_DIR=y
+CONFIG_TMPFS=y
+# CONFIG_MISC_FILESYSTEMS is not set
+# CONFIG_NETWORK_FILESYSTEMS is not set
+CONFIG_KEYS=y
+CONFIG_SECURITYFS=y
+# CONFIG_CRYPTO_ECHAINIV is not set
+# CONFIG_CRYPTO_HW is not set
+# CONFIG_UNUSED_SYMBOLS is not set
+CONFIG_UNWINDER_FRAME_POINTER=y
diff --git a/support/testing/conf/docker-compose.yml b/support/testing/conf/docker-compose.yml
new file mode 100644
index 0000000000..49ff2677da
--- /dev/null
+++ b/support/testing/conf/docker-compose.yml
@@ -0,0 +1,4 @@
+version: '3'
+services:
+  busybox:
+    image: "busybox:latest"
diff --git a/support/testing/tests/package/test_docker_compose.py b/support/testing/tests/package/test_docker_compose.py
new file mode 100644
index 0000000000..8bf3ae00b5
--- /dev/null
+++ b/support/testing/tests/package/test_docker_compose.py
@@ -0,0 +1,70 @@
+import os
+
+import infra.basetest
+
+
+class TestDockerCompose(infra.basetest.BRTest):
+    config = infra.basetest.BASIC_TOOLCHAIN_CONFIG + \
+        """
+        BR2_x86_64=y
+        BR2_x86_core2=y
+        BR2_TOOLCHAIN_EXTERNAL=y
+        BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
+        BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+        BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-x86-64-core2-full-2018.05.tar.bz2"
+        BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
+        BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_16=y
+        BR2_TOOLCHAIN_EXTERNAL_LOCALE=y
+        # BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_DEBUG is not set
+        BR2_TOOLCHAIN_EXTERNAL_CXX=y
+        BR2_SYSTEM_DHCP="eth0"
+        BR2_ROOTFS_POST_BUILD_SCRIPT="{}"
+        BR2_ROOTFS_POST_SCRIPT_ARGS="{}"
+        BR2_LINUX_KERNEL=y
+        BR2_LINUX_KERNEL_CUSTOM_VERSION=y
+        BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.19"
+        BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
+        BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="{}"
+        BR2_PACKAGE_CA_CERTIFICATES=y
+        BR2_PACKAGE_CGROUPFS_MOUNT=y
+        BR2_PACKAGE_DOCKER_CLI=y
+        BR2_PACKAGE_DOCKER_COMPOSE=y
+        BR2_PACKAGE_DOCKER_ENGINE=y
+        BR2_TARGET_ROOTFS_EXT2=y
+        BR2_TARGET_ROOTFS_EXT2_SIZE="512M"
+        # BR2_TARGET_ROOTFS_TAR is not set
+        """.format(
+            infra.filepath("tests/package/copy-sample-script-to-target.sh"),
+            infra.filepath("conf/docker-compose.yml"),
+            infra.filepath("conf/docker-compose-kernel.config"))
+
+    def wait_for_dockerd(self):
+        # dockerd takes a while to start up
+        _, _ = self.emulator.run('while [ ! -e /var/run/docker.sock ]; do sleep 1; done', 120)
+
+    def docker_test(self):
+        # will download container if not available, which may take some time
+        _, exit_code = self.emulator.run('docker run --rm busybox:latest /bin/true', 120)
+        self.assertEqual(exit_code, 0)
+
+    def docker_compose_test(self):
+        # will download container if not available, which may take some time
+        _, exit_code = self.emulator.run('docker-compose up', 120)
+        self.assertEqual(exit_code, 0)
+
+    def test_run(self):
+        kernel = os.path.join(self.builddir, "images", "bzImage")
+        rootfs = os.path.join(self.builddir, "images", "rootfs.ext2")
+        self.emulator.boot(arch="x86_64",
+                           kernel=kernel,
+                           kernel_cmdline=["root=/dev/vda", "console=ttyS0"],
+                           options=["-cpu", "core2duo",
+                                    "-m", "512M",
+                                    "-device", "virtio-rng-pci",
+                                    "-drive", "file={},format=raw,if=virtio".format(rootfs),
+                                    "-net", "nic,model=virtio",
+                                    "-net", "user"])
+        self.emulator.login()
+        self.wait_for_dockerd()
+        self.docker_test()
+        self.docker_compose_test()
-- 
2.11.0