Add sdk-support section for is-supported-script and unit tests to e…

…nsure that expressions, paint and layout properties always have an SDK support section.

src/style-spec/reference/v8.json

@@ -3459,7 +3459,13 @@
       },
       "is-supported-script": {
         "doc": "Returns `true` if the input string is expected to render legibly. Returns `false` if the input string contains sections that cannot be rendered without potential loss of meaning (e.g. Indic scripts that require complex text shaping, or right-to-left scripts if the the `mapbox-gl-rtl-text` plugin is not in use in Mapbox GL JS).",
-        "group": "String"
+        "group": "String",
+        "sdk-support": {
+            "basic functionality": {
+              "js": "0.45.0",
+              "android": "6.6.0"
+            }
+          }
       },
       "upcase": {
         "doc": "Returns the input string converted to uppercase. Follows the Unicode Default Case Conversion algorithm and the locale-insensitive case mappings in the Unicode Character Database.",

test/unit/style-spec/spec.test.js

@@ -20,6 +20,24 @@ import * as spec from '../../../src/style-spec/style-spec';
     });
 });
 
+test(`v8 Spec SDK Support section`, (t) => {
+    const v = 'v8';
+    const propObjs = [].concat(spec[v].paint).concat(spec[v].layout);
+    propObjs.forEach((objKey) => {
+        const props = spec[v][objKey];
+        const propKeys = Object.keys(props);
+        propKeys.forEach((key) => {
+            t.ok(props[key]["sdk-support"], `${objKey}_${key} is missing sdk support section`);
+        });
+    });
+
+    const expressions = spec[v].expression_name.values;
+    const expressionNames = Object.keys(expressions);
+    expressionNames.forEach((expr) => {
+        t.ok(expressions[expr]["sdk-support"], `expression_${expr} is missing sdk support section`);
+    });
+    t.end();
+});
 function validSchema(k, t, obj, ref, version, kind) {
     const scalar = ['boolean', 'string', 'number'];
     const types = Object.keys(ref).concat(['boolean', 'string', 'number',