1 files changed, 44 insertions, 0 deletions
diff --git a/tests/frontend/logging/plugins/logtest.py b/tests/frontend/logging/plugins/logtest.py
new file mode 100644
index 000000000..0817a92d8
--- /dev/null
+++ b/tests/frontend/logging/plugins/logtest.py
@@ -0,0 +1,44 @@
+from buildstream import Element
+
+
+class LogTest(Element):
+    BST_MIN_VERSION = "2.0"
+
+    def configure(self, node):
+        pass
+
+    def preflight(self):
+        pass
+
+    def get_unique_key(self):
+        return {}
+
+    def configure_sandbox(self, sandbox):
+        pass
+
+    def stage(self, sandbox):
+        # Here we stage the artifacts of dependencies individually without
+        # using a timed activity or suppressing the logging.
+        #
+        # This allows us to test the logging behavior when log lines are
+        # triggered by an element which is not the element being processed.
+        #
+        #   * The master build log should show the element name and cache key
+        #     of the task element, i.e. the element currently being built, not
+        #     the element issuing the message.
+        #
+        #   * In the individual task log, we expect to see the name and cache
+        #     key of the element issuing messages, since the entire log file
+        #     is contextual to the task, it makes more sense to provide the
+        #     full context of the element issuing the log in this case.
+        #
+        for dep in self.dependencies():
+            dep.stage_artifact(sandbox)
+
+    def assemble(self, sandbox):
+        return "/"
+
+
+# Plugin entry point
+def setup():
+    return LogTest