Fixed merge key error with JSON schema

src/languageservice/parser/jsonParser07.ts

@@ -837,8 +837,37 @@ function validate(node: ASTNode, schema: JSONSchema, validationResult: Validatio
         const unprocessedProperties: string[] = [];
         for (const propertyNode of node.properties) {
             const key = propertyNode.keyNode.value;
-            seenKeys[key] = propertyNode.valueNode;
-            unprocessedProperties.push(key);
+
+            //Replace the merge key with the actual values of what the node value points to in seen keys
+            if (key === '<<' && propertyNode.valueNode) {
+
+                switch (propertyNode.valueNode.type) {
+                    case 'object': {
+                        propertyNode.valueNode['properties'].forEach(propASTNode => {
+                            const propKey = propASTNode.keyNode.value;
+                            seenKeys[propKey] = propASTNode.valueNode;
+                            unprocessedProperties.push(propKey);
+                        });
+                        break;
+                    }
+                    case 'array': {
+                        propertyNode.valueNode['items'].forEach(sequenceNode => {
+                            sequenceNode['properties'].forEach(propASTNode => {
+                                const seqKey = propASTNode.keyNode.value;
+                                seenKeys[seqKey] = propASTNode.valueNode;
+                                unprocessedProperties.push(seqKey);
+                            });
+                        });
+                        break;
+                    }
+                    default: {
+                        break;
+                    }
+                }
+            } else {
+                seenKeys[key] = propertyNode.valueNode;
+                unprocessedProperties.push(key);
+            }
         }
 
         if (Array.isArray(schema.required)) {

test/schemaValidation.test.ts

@@ -354,6 +354,23 @@ suite('Validation Tests', () => {
             });
         });
 
+        describe('Test anchors specifically against gitlab schema', function () {
+            it('Test that anchors do not report Property << is not allowed', done => {
+                languageService.configure({
+                    schemas: [{
+                        uri: 'http://json.schemastore.org/gitlab-ci',
+                        fileMatch: ['*.yaml', '*.yml']
+                    }],
+                    validate: true
+                });
+                const content = '.test-cache: &test-cache\n  cache: {}\nnodejs-tests:\n  <<: *test-cache\n  script: test';
+                const validator = parseSetup(content);
+                validator.then(function (result) {
+                    assert.equal(result.length, 0);
+                }).then(done, done);
+            });
+        });
+
         describe('Test with custom schemas', function () {
             function parseSetup(content: string) {
                 const testTextDocument = setupTextDocument(content);
@@ -412,7 +429,6 @@ suite('Validation Tests', () => {
                     assert.equal(result[1].message, `Value is not accepted. Valid values: "ImageStreamImport", "ImageStreamLayers".`);
                 }).then(done, done);
             });
-
         });
     });
 });