added test for vendor extension

Author: jarlehansen

README.md

@@ -91,8 +91,11 @@ __Full example__
          description = "",
          termsOfService = "",
          contact = @Contact(name = "", url = "", email = ""),
-         license = @License(name = "", url = ""))
- )
+         license = @License(name = "", url = ""),
+         extensions = @Extension(name = "x-test",
+            properties = @ExtensionProperty(name = "test-key", value = "test-value")
+         ))
+)
 ```
 
 * Use __conventionMode__ to print better names on the swagger-ui page. It will alter the tags (the name of the groups).

pom.xml

@@ -16,6 +16,7 @@
         <jackson.version>2.8.8</jackson.version>
         <lombok.version>1.16.16</lombok.version>
         <guava.version>22.0</guava.version>
+        <jsonpath.version>2.2.0</jsonpath.version>
 
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <java.version>1.8</java.version>
@@ -73,6 +74,12 @@
             <scope>provided</scope>
         </dependency>
 
+        <dependency>
+            <groupId>com.jayway.jsonpath</groupId>
+            <artifactId>json-path</artifactId>
+            <version>${jsonpath.version}</version>
+            <scope>test</scope>
+        </dependency>
         <dependency>
             <groupId>cglib</groupId>
             <artifactId>cglib-nodep</artifactId>

src/test/groovy/com/github/springfox/loader/SpringfoxLoaderConfigSpec.groovy

@@ -1,6 +1,7 @@
 package com.github.springfox.loader
 
 import com.github.springfox.loader.testutils.TestApplication
+import com.jayway.jsonpath.JsonPath
 import org.springframework.beans.factory.annotation.Autowired
 import org.springframework.boot.test.context.SpringBootTest
 import org.springframework.boot.test.web.client.TestRestTemplate
@@ -35,8 +36,8 @@ class SpringfoxLoaderConfigSpec extends Specification {
         def version = loaderProps.getVersion()
 
         then:
-        title == "test"
-        version == "1.0.0"
+        title == 'test'
+        version == '1.0.0'
     }
 
     def "Initialize with test profile"() {
@@ -47,9 +48,19 @@ class SpringfoxLoaderConfigSpec extends Specification {
         enabled
     }
 
+    def "GET api-docs with vendor extension"() {
+        when:
+        def response = restTemplate.getForEntity('/v2/api-docs', String)
+        def json = response.getBody()
+
+        then:
+        response.statusCode == HttpStatus.OK
+        JsonPath.read(json, '$.info.x-test.test-key') == 'test-value'
+    }
+
     def "Custom base path for swagger-ui"() {
         when:
-        def response = restTemplate.getForEntity("/docs/swagger-ui.html", String)
+        def response = restTemplate.getForEntity('/docs/swagger-ui.html', String)
 
         then:
         response.statusCode == HttpStatus.OK

src/test/groovy/com/github/springfox/loader/testutils/TestApplication.java

@@ -1,9 +1,18 @@
 package com.github.springfox.loader.testutils;
 
 import com.github.springfox.loader.EnableSpringfox;
+import io.swagger.annotations.Extension;
+import io.swagger.annotations.ExtensionProperty;
+import io.swagger.annotations.Info;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 
-@EnableSpringfox(swaggerUiBasePath = "/docs", includeControllers = TestController.class)
+@EnableSpringfox(
+        value = @Info(title = "test", version = "1.0.0",
+                extensions = @Extension(name = "x-test",
+                        properties = @ExtensionProperty(name = "test-key", value = "test-value")
+                )
+        ),
+        swaggerUiBasePath = "/docs", includeControllers = TestController.class)
 @SpringBootApplication
 public class TestApplication {
 }