Add new test schema

test/README.md

@@ -1,6 +1,19 @@
 The tests in the `./tests/` directory were originally copied from the [messageformat project](https://github.com/messageformat/messageformat/tree/11c95dab2b25db8454e49ff4daadb817e1d5b770/packages/mf2-messageformat/src/__fixtures)
 and are here relicensed by their original author (Eemeli Aro) under the Unicode License.
 
+These test files are intended to be useful for testing multiple different message processors in different ways:
+
+- `syntax.json` — Test cases that do not depend on any registry definitions.
+
+- `syntax-errors.json` — Strings that should produce a Syntax Error when parsed.
+
+- `data-model-errors.json` - Strings that should produce Data Model Error when processed.
+  Error names are defined in ["MessageFormat 2.0 Errors"](../spec/errors.md) in the spec.
+
+- `functions/` — Test cases that correspond to built-in functions.
+  The behaviour of the built-in formatters is implementation-specific so the `exp` field is often
+  omitted and assertions are made on error cases.
+
 Some examples of test harnesses using these tests, from the source repository:
 
 - [CST parse/stringify tests](https://github.com/messageformat/messageformat/blob/11c95dab2b25db8454e49ff4daadb817e1d5b770/packages/mf2-messageformat/src/cst/cst.test.ts)

test/schemas/v0-0-1/tests.schema.json

@@ -232,6 +232,7 @@
         {
           "additionalProperties": false,
           "required": [
+            "name",
             "value"
           ],
           "properties": {
@@ -243,6 +244,7 @@
         },
         {
           "required": [
+            "name",
             "type",
             "value"
           ],
@@ -254,6 +256,7 @@
               "const": "datetime"
             },
             "value": {
+              "$comment": "Should be converted to a datetime.",
               "type": "string"
             }
           }
@@ -276,7 +279,99 @@
       }
     },
     "expParts": {
-      "$ref": "formatted-parts.schema.json"
+      "description": "The expected result of formatting the message to parts.",
+      "type": "array",
+      "items": {
+        "oneOf": [
+          {
+            "description": "Message literal part.",
+            "type": "object",
+            "additionalProperties": false,
+            "required": [
+              "type",
+              "value"
+            ],
+            "properties": {
+              "type": {
+                "const": "literal"
+              },
+              "value": {
+                "type": "string"
+              }
+            }
+          },
+          {
+            "description": "Message markup part.",
+            "type": "object",
+            "additionalProperties": false,
+            "required": [
+              "type",
+              "kind",
+              "name"
+            ],
+            "properties": {
+              "type": {
+                "const": "markup"
+              },
+              "kind": {
+                "enum": [
+                  "open",
+                  "standalone",
+                  "close"
+                ]
+              },
+              "source": {
+                "type": "string"
+              },
+              "name": {
+                "type": "string"
+              },
+              "options": {
+                "type": "object"
+              }
+            }
+          },
+          {
+            "description": "Message expression part.",
+            "type": "object",
+            "additionalProperties": "false",
+            "required": [
+              "type",
+              "source"
+            ],
+            "properties": {
+              "type": {
+                "type": "string"
+              },
+              "source": {
+                "type": "string"
+              },
+              "locale": {
+                "type": "string"
+              },
+              "parts": {
+                "type": "array",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "type": {
+                      "type": "string"
+                    },
+                    "source": {
+                      "type": "string"
+                    },
+                    "value": {}
+                  },
+                  "required": [
+                    "type"
+                  ]
+                }
+              },
+              "value": {}
+            }
+          }
+        ]
+      }
     },
     "expErrors": {
       "description": "The runtime errors expected to be emitted when formatting the message. If expErrors is either absent or empty, the message must be formatted without errors.",