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+#+title: OpenAPI Test Coverage
+
+Reporting coverage of OpenAPI request and response specifications using [[file:20210415110902-tornado_openapi_3.org][Tornado
+OpenAPI 3]].
+
+* Things that can be covered
+- Requests by path and operation
+- Responses by code
+- Schemas?
+
+* Writing a Python coverage plugin
+- [[https://coverage.readthedocs.io/en/coverage-5.5/api_plugin.html#api-plugin][Plug-in classes]]
+
+Traced files can be determined dynamically based on execution frames ([[https://docs.python.org/3/library/inspect.html][frame
+objects]] are passed to plugin functions). This means I'll be able to create
+simplified file-like representations of OpenAPI specifications, marking lines of
+them as executable, and reporting on which ones should be marked as executed
+based on the how the validator was run.
+
+#+CAPTION: Plugin WIP
+#+begin_src python
+  import coverage.plugin
+
+
+  class OpenAPITemplatePlugin(coverage.plugin.CoveragePlugin, coverage.plugin.FileTracer):
+      def __init__(self):
+          self.specs = {}
+
+      def sys_info(self):
+          return [("hi", "mom")]
+
+      def file_tracer(self, filename):
+          return None
+
+      def has_dynamic_source_filename():
+          return True
+
+      def dynamic_source_filename(self, filename, frame):
+          # TODO: Find calls to RequestValidator.validate
+          return None
+
+
+  def coverage_init(reg, options):
+      ...
+#+end_src
diff --git a/20210415110902-tornado_openapi_3.org b/20210415110902-tornado_openapi_3.org
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+#+title: Tornado OpenAPI 3
+#+roam_key: https://tornado-openapi3.readthedocs.io/
+
+A library providing API specification validation to [[https://www.tornadoweb.org/][Tornado]] applications using
+[[file:20210226114112-openapi_core.org][OpenAPI Core]].