travis: add an osbuild test

Actually test the tools. This simply runs a noop stage followed by
a noop assembler.

Signed-off-by: Tom Gundersen <teg@jklm.no>

.travis.yml

@@ -2,9 +2,13 @@ dist: bionic
 language: python
 python:
   - "3.7"
+before_install:
+  - sudo apt-get install -y systemd-container
 install:
   - pip install pylint
 jobs:
   include:
     - name: pylint
       script: pylint osbuild osbuild-run assemblers/* stages/*
+    - name: pipeline-noop
+      script: sudo env "PATH=$PATH" python3 -m osbuild --libdir . --output . samples/noop.json

assemblers/org.osbuild.noop

@@ -0,0 +1,12 @@
+#!/usr/bin/python3
+
+import json
+import sys
+
+def main(_tree, _output_dir, options):
+    print("Not doing anything with these options:", json.dumps(options))
+
+if __name__ == '__main__':
+    args = json.load(sys.stdin)
+    r = main(args["tree"], args["output_dir"], args.get("options", {}))
+    sys.exit(r)

samples/noop.json

@@ -0,0 +1,11 @@
+{
+  "name": "noop",
+  "stages": [
+    {
+      "name": "org.osbuild.noop"
+    }
+  ],
+  "assembler": {
+    "name": "org.osbuild.noop"
+  }
+}