Add a simple test for the AppendOverlays feature

Signed-off-by: Rémi Duraffort <remi.duraffort@linaro.org>

tests/lava_dispatcher/pipeline_refs/kvm-overlays.yaml

+- class: actions.deploy.image.DeployImagesAction
+  name: deployimages
+  pipeline:
+  - class: actions.deploy.download.DownloaderAction
+    name: download-retry
+    pipeline:
+    - {class: actions.deploy.download.HttpDownloadAction, name: http-download}
+    - class: actions.deploy.download.DownloaderAction
+      name: download-retry
+      pipeline:
+      - {class: actions.deploy.download.HttpDownloadAction, name: http-download}
+    - {class: actions.deploy.apply_overlay.AppendOverlays, name: append-overlays}
+  - class: actions.deploy.overlay.OverlayAction
+    name: lava-overlay
+    pipeline:
+    - {class: actions.deploy.overlay.VlandOverlayAction, name: lava-vland-overlay}
+    - {class: actions.deploy.overlay.MultinodeOverlayAction, name: lava-multinode-overlay}
+    - class: actions.deploy.testdef.TestDefinitionAction
+      name: test-definition
+      pipeline:
+      - {class: actions.deploy.testdef.GitRepoAction, name: git-repo-action}
+      - {class: actions.deploy.testdef.TestOverlayAction, name: test-overlay}
+      - {class: actions.deploy.testdef.TestInstallAction, name: test-install-overlay}
+      - {class: actions.deploy.testdef.TestRunnerAction, name: test-runscript-overlay}
+      - {class: actions.deploy.testdef.GitRepoAction, name: git-repo-action}
+      - {class: actions.deploy.testdef.TestOverlayAction, name: test-overlay}
+      - {class: actions.deploy.testdef.TestInstallAction, name: test-install-overlay}
+      - {class: actions.deploy.testdef.TestRunnerAction, name: test-runscript-overlay}
+    - {class: actions.deploy.overlay.CompressOverlay, name: compress-overlay}
+    - {class: actions.deploy.overlay.PersistentNFSOverlay, name: persistent-nfs-overlay}
+  - {class: actions.deploy.apply_overlay.ApplyOverlayGuest, name: apply-overlay-guest}
+  - {class: actions.deploy.environment.DeployDeviceEnvironment, name: deploy-device-env}
+- class: actions.boot.qemu.BootQEMUImageAction
+  name: boot-image-retry
+  pipeline:
+  - class: actions.boot.qemu.BootQemuRetry
+    name: boot-qemu-image
+    pipeline:
+    - {class: actions.boot.qemu.CallQemuAction, name: execute-qemu}
+  - {class: actions.boot.AutoLoginAction, name: auto-login-action}
+  - {class: shell.ExpectShellSession, name: expect-shell-connection}
+  - {class: actions.boot.environment.ExportDeviceEnvironment, name: export-device-env}
+- class: actions.test.shell.TestShellRetry
+  name: lava-test-retry
+  pipeline:
+  - {class: actions.test.shell.TestShellAction, name: lava-test-shell}
+- class: power.FinalizeAction
+  name: finalize
+  pipeline:
+  - {class: power.PowerOff, name: power-off}
+  - {class: power.ReadFeedback, name: read-feedback}

tests/lava_dispatcher/sample_jobs/kvm-overlays.yaml

+device_type: qemu
+
+job_name: qemu overlays example
+timeouts:
+  job:
+    minutes: 20
+  action:
+    minutes: 5
+priority: medium
+visibility: public
+
+actions:
+- deploy:
+    timeout:
+      minutes: 20
+    to: tmpfs
+    images:
+      rootfs:
+        url: http://example.com/rootfs.ext4.xz
+        image_arg: -drive format=ext4,file={rootfs}
+        compression: xz
+        format: ext4
+        overlays:
+          modules:
+            url: http://example.com/modules.tar.gz
+            compression: gz
+            format: tar
+            path: /
+    os: debian
+
+- boot:
+    method: qemu
+    media: tmpfs
+    failure_retry: 2
+    prompts:
+    - 'root@debian:~#'
+
+- test:
+    failure_retry: 3
+    timeout:
+      minutes: 5
+    definitions:
+    - repository: git://git.linaro.org/lava-team/lava-functional-tests.git
+      from: git
+      path: lava-test-shell/smoke-tests-basic.yaml
+      name: smoke-tests
+    - repository: http://git.linaro.org/lava-team/lava-functional-tests.git
+      from: git
+      path: lava-test-shell/single-node/singlenode03.yaml
+      name: singlenode-advanced
+
+context:
+  arch: amd64

tests/lava_dispatcher/test_kvm.py

@@ -305,6 +305,17 @@ class TestKVMDownloadLocalDeploy(StdoutTestCase):
         self.assertEqual(description_ref, self.job.pipeline.describe(False))
 
 
+class TestKVMDeployOverlays(StdoutTestCase):
+    def setUp(self):
+        super().setUp()
+        factory = Factory()
+        self.job = factory.create_kvm_job("sample_jobs/kvm-overlays.yaml")
+
+    def test_pipeline(self):
+        description_ref = self.pipeline_reference("kvm-overlays.yaml", job=self.job)
+        self.assertEqual(description_ref, self.job.pipeline.describe(False))
+
+
 def prepare_test_connection(failure=False):
     if failure:
         logfile = os.path.join(os.path.dirname(__file__), "kernel-login-error.txt")