Add Drone CI pipeline

.drone.jsonnet

@@ -0,0 +1,41 @@
+# Pipeline template
+local test_with(version, use_network=false) = {
+    kind: "pipeline",
+    type: "docker",
+    name: "py" + version + (if use_network then '-online' else ''),
+    steps: [
+        {
+            name: "test",
+            image: "python:" + version + "-buster",
+            commands: [
+                "pip install -r requirements.txt",
+                "apt-get update",
+                # For SysDNS
+                "apt-get -yy install bind9-host",
+                "./tests-wrapper.sh" + if !use_network then ' --no-network' else ''
+            ],
+            failure: if use_network then "ignore",
+            environment: {
+                [secret_name]: {
+                    from_secret: secret_name
+                }
+                for secret_name in [
+                    "AQICN_APIKEY",
+                    "NUWEATHER_APIKEY_DARKSKY",
+                    "NUWEATHER_APIKEY_OPENWEATHERMAP",
+                    "NUWEATHER_APIKEY_WEATHERSTACK",
+                    "lastfm_apikey",
+                ]
+            }
+        }
+    ]
+};
+
+[
+    test_with("3.6"),
+    test_with("3.6", use_network=true),
+    test_with("3.7"),
+    test_with("3.8"),
+    test_with("3.9"),
+    test_with("3.9", use_network=true),
+]

tests-wrapper.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+# Exclude stubs for (re)moved plugins
+SKIP_PLUGINS=("--exclude=./Weather" "--exclude=./DDG" "--exclude=./SedRegex")
+
+if [[ -n "$DRONE_PULL_REQUEST" ]]; then
+    echo "Skipping tests that require secret API keys"
+    export SKIP_PLUGINS+=("--exclude=./LastFM" "--exclude=./NuWeather" "--exclude=./AQI")
+fi
+
+supybot-test -c --plugins-dir=. "${SKIP_PLUGINS[@]}" "$@"