input: Convert root into object, require version

Convert the root of schema into an object with metadata, and a required
'version' property.

Include optional 'title' and 'description' properties.

Also, update tests.

Close #319

schemas/input/csl-data.json

@@ -2,18 +2,38 @@
   "title": "CSL JSON/YAML",
   "description": "JSON schema for CSL input data",
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "$id": "https://resource.citationstyles.org/schema/latest/input/json/csl-data.json",
-  "type": "array",
-  "items": {
-    "$ref": "#/definitions/refitem"
+  "$id": "https://resource.citationstyles.org/schema/v1.1/input/json/csl-data.json",
+  "type": "object",
+  "required": ["references", "version"],
+  "properties": {
+    "version": {
+      "type": "number",
+      "enum": [1.1]
+    },
+    "title": {
+      "type": "string"
+    },
+    "description": {
+      "type": "string"
+    },
+    "references": {
+      "type": "array",
+      "items": {
+        "$ref": "#/definitions/refitem"
+      }
+    }
   },
   "definitions": {
     "title-variable": {
       "title": "Title variable",
       "description": "Titles are represented as a string or as an object.",
       "anyOf": [
-        { "$ref": "#/definitions/rich-text-string" },
-        { "$ref": "#/definitions/title-object" }
+        {
+          "$ref": "#/definitions/rich-text-string"
+        },
+        {
+          "$ref": "#/definitions/title-object"
+        }
       ]
     },
     "title-object": {
@@ -90,7 +110,11 @@
           "type": "object",
           "title": "Literal Date",
           "description": "A date that should be passed through to the processor as is; for dates that cannot be represented in EDTF.",
-          "examples": [{ "literal": "Han Dynasty" }],
+          "examples": [
+            {
+              "literal": "Han Dynasty"
+            }
+          ],
           "properties": {
             "literal": {
               "type": "string"

tests/schemas/input/test_json.py

@@ -84,10 +84,15 @@ def test_schema_is_valid(json_schema):
 
 
 def test_basic_data_schema_validates(csl_data_validator):
-    csl = [{
-        'id': 'example-id',
-        'type': 'report',
-    }]
+    csl = {
+        'version': 1.1,
+        'references': [
+            {
+               'id': 'example-id',
+               'type': 'report',
+            }
+        ]
+    }
     csl_data_validator.validate(csl)
 
 
@@ -129,14 +134,19 @@ def test_citation_schema_compound_locator_validates(csl_citation_validator):
     csl_citation_validator.validate(cite)
 
 def test_basic_data_schema_with_author_validates(csl_data_validator):
-    csl = [{
-        "id": "example-id",
-        "type": "report",
-        "author": [
-            {"given": "Jane", "family": "Roe"},
-            {"institution": "ACME Corporation"}
+    csl =  {
+        'version': 1.1,
+        'references': [
+           {
+                "id": "example-id",
+                "type": "report",
+                "author": [
+                    {"given": "Jane", "family": "Roe"},
+                    {"institution": "ACME Corporation"}
+               ]
+           }
         ]
-    }]
+    }
     csl_data_validator.validate(csl)