Add a JSON reporter.

json_reporter.schema.json

+{
+  "$schema": "http://json-schema.org/draft-04/schema#",
+  "description": "An event emitted by the test package's JSON reporter",
+
+  "definitions": {
+    "Test": {
+      "required": ["id", "name", "metadata"],
+      "properties": {
+        "id": {"type": "integer", "minimum": 0},
+        "name": {"type": "string"},
+        "metadata": {"$ref": "#/definitions/Metadata"}

[kevmoo, 2015/11/21 03:37:17]

I question wether this is required – especially if all of the values are
empty/defaults

Thoughts?

[nweiz, 2015/11/23 22:24:08]

We need to report when a test is skipped somehow, and this is the most
extensible way to do so. We could omit it if it's just defaults, but it doesn't
take up much room and emitting a consistent structure makes the code easier to
consume.

+      }
+    },
+
+    "Metadata": {
+      "required": ["skip", "skipReason"],
+      "properties": {
+        "skip": {"type": "boolean"},
+        "skipReason": {
+          "oneOf": [{"type": "string"}, {"type": "null"}]
+        }
+      }
+    }
+  },
+
+  "required": ["type", "time"],
+  "properties": {
+    "time": {"type": "integer", "minimum": 0},
+    "type": {"type": "string"}
+  },
+
+  "oneOf": [
+    {
+      "title": "StartEvent",
+      "required": ["protocolVersion", "runnerVersion"],
+      "properties": {
+        "type": {"enum": ["start"]},
+        "protocolVersion": {"type": "string"},
+        "runnerVersion": {
+          "oneOf": [{"type": "string"}, {"type": "null"}]
+        }
+      }
+    },
+
+    {
+      "title": "TestStartEvent",
+      "required": ["test"],
+      "properties": {
+        "type": {"enum": ["testStart"]},
+        "test": {"$ref": "#/definitions/Test"}
+      }
+    },
+
+    {
+      "title": "PrintEvent",
+      "required": ["message"],
+      "properties": {
+        "type": {"enum": ["print"]},
+        "message": {"type": "string"}
+      }
+    },
+
+    {
+      "title": "ErrorEvent",
+      "required": ["testID", "error", "stackTrace", "isFailure"],
+      "properties": {
+        "type": {"enum": ["error"]},
+        "testID": {"type": "integer", "minimum": 0},
+        "error": {"type": "string"},
+        "stackTrace": {"type": "string"},
+        "isFailure": {"type": "boolean"}
+      }
+    },
+
+    {
+      "title": "TestDoneEvent",
+      "required": ["testID", "result", "hidden"],
+      "properties": {
+        "type": {"enum": ["testDone"]},
+        "testID": {"type": "integer", "minimum": 0},
+        "result": {"type": "string", "enum": ["success", "failure", "error"]},
+        "hidden": {"type": "boolean"}
+      }
+    },
+
+    {
+      "title": "DoneEvent",
+      "required": ["success"],
+      "properties": {
+        "type": {"enum": ["done"]},
+        "success": {"type": "boolean"}
+      }
+    },
+
+    {
+      "title": "FutureEvent",
+      "properties": {
+        "type": {
+          "not": {
+            "enum": ["start", "testStart", "print", "error", "testDone", "done"]
+          }
+        }
+      }
+    }
+  ]
+}