fix(swagger-api#2104): properly process inline refs in composed schemas

Author: fpaul-1A

modules/swagger-parser-v3/src/main/java/io/swagger/v3/parser/processors/ExternalRefProcessor.java

@@ -215,22 +215,18 @@ private void processComposedSchema(ComposedSchema composedSchema, String file) {
         if (composedSchema.getOneOf() != null) {
             for (Schema item : composedSchema.getOneOf()) {
                 if (item.get$ref() != null) {
-                    if (item.get$ref() != null) {
-                        processRefSchema(item, file);
-                    } else {
-                        processSchema(item, file);
-                    }
+                    processRefSchema(item, file);
+                } else {
+                    processSchema(item, file);
                 }
             }
         }
         if (composedSchema.getAnyOf() != null) {
             for (Schema item : composedSchema.getAnyOf()) {
                 if (item.get$ref() != null) {
-                    if (item.get$ref() != null) {
-                        processRefSchema(item, file);
-                    } else {
-                        processSchema(item, file);
-                    }
+                    processRefSchema(item, file);
+                } else {
+                    processSchema(item, file);
                 }
             }
         }

modules/swagger-parser-v3/src/test/java/io/swagger/v3/parser/processors/ExternalRefProcessorTest.java

@@ -229,4 +229,29 @@ public void testHandleComposedSchemasInArrayItems() {
         assertTrue(components.containsKey("OrderRowType"));
     }
 
+    @Test
+    public void testHandleInlineRefsInComposedSchemas() {
+        OpenAPIV3Parser openApiParser = new OpenAPIV3Parser();
+        ParseOptions options = new ParseOptions();
+        options.setResolve(true);
+        SwaggerParseResult parseResult = openApiParser.readLocation("issue-2104/openapi.yaml", null, options);
+        OpenAPI openAPI = parseResult.getOpenAPI();
+
+        Map<String, Schema> components = openAPI.getComponents().getSchemas();
+        assertEquals(components.size(), 4);
+        assertTrue(components.containsKey("ResponseAllOf"));
+        assertTrue(components.containsKey("ResponseOneOf"));
+        assertTrue(components.containsKey("ResponseAnyOf"));
+        assertTrue(components.containsKey("Product"));
+
+        Schema allOfInlineProduct = (Schema)((Schema)components.get("ResponseAllOf").getAllOf().get(1)).getProperties().get("product");
+        assertThat(allOfInlineProduct.get$ref(), is("#/components/schemas/Product"));
+
+        Schema oneOfInlineProduct = (Schema)((Schema)components.get("ResponseOneOf").getOneOf().get(1)).getProperties().get("product");
+        assertThat(oneOfInlineProduct.get$ref(), is("#/components/schemas/Product"));
+
+        Schema anyOfInlineProduct = (Schema)((Schema)components.get("ResponseAnyOf").getAnyOf().get(1)).getProperties().get("product");
+        assertThat(anyOfInlineProduct.get$ref(), is("#/components/schemas/Product"));
+    }
+
 }

modules/swagger-parser-v3/src/test/resources/issue-2104/depth1/depth2/definitions.yaml

@@ -0,0 +1,24 @@
+components:
+  schemas:
+    ResponseAllOf:
+      allOf:
+        - $ref: '../depth2/product/definitions.yaml#/components/schemas/Product'
+        - type: object
+          properties: 
+            product:
+              $ref: '../depth2/product/definitions.yaml#/components/schemas/Product'
+    ResponseOneOf:
+      oneOf:
+        - $ref: '../depth2/product/definitions.yaml#/components/schemas/Product'
+        - type: object
+          properties: 
+            product:
+              $ref: '../depth2/product/definitions.yaml#/components/schemas/Product'
+    ResponseAnyOf:
+      anyOf:
+        - $ref: '../depth2/product/definitions.yaml#/components/schemas/Product'
+        - type: object
+          properties: 
+            product:
+              $ref: '../depth2/product/definitions.yaml#/components/schemas/Product'
+   

modules/swagger-parser-v3/src/test/resources/issue-2104/depth1/depth2/product/definitions.yaml

@@ -0,0 +1,10 @@
+components:
+  schemas:
+    Product:
+      type: object
+      additionalProperties: false
+      required:
+        - type
+      properties:
+        id:
+          type: string

modules/swagger-parser-v3/src/test/resources/issue-2104/openapi.yaml

@@ -0,0 +1,51 @@
+openapi: 3.0.1
+info:
+  title: API
+  description: API
+  version: LATEST
+paths:
+  /test-all-of:
+    post:
+      requestBody:
+        required: true
+        content:
+          text/plain:
+            schema:
+              type: string
+      responses:
+        200:
+          description: OK
+          content:
+            application/json:
+              schema:
+                $ref: './depth1/depth2/definitions.yaml#/components/schemas/ResponseAllOf'
+  /test-one-of:
+    post:
+      requestBody:
+        required: true
+        content:
+          text/plain:
+            schema:
+              type: string
+      responses:
+        200:
+          description: OK
+          content:
+            application/json:
+              schema:
+                $ref: './depth1/depth2/definitions.yaml#/components/schemas/ResponseOneOf'
+  /test-any-of:
+    post:
+      requestBody:
+        required: true
+        content:
+          text/plain:
+            schema:
+              type: string
+      responses:
+        200:
+          description: OK
+          content:
+            application/json:
+              schema:
+                $ref: './depth1/depth2/definitions.yaml#/components/schemas/ResponseAnyOf'