Fixed #1189: @path("") and @path("/") produce an empty path

Author: iushankin

modules/swagger-jaxrs/src/main/java/io/swagger/jaxrs/Reader.java

@@ -274,7 +274,7 @@ protected Swagger read(Class<?> cls, String parentPath, String parentMethod, boo
                             pathBuilder.append("/").append(p);
                         }
                     }
-                    operationPath = pathBuilder.toString();
+                    operationPath = pathBuilder.length() > 0 ? pathBuilder.toString() : PATH_DELIMITER;
 
                     if (isIgnored(operationPath)) {
                         continue;

modules/swagger-jaxrs/src/test/scala/ReaderTest.scala

@@ -188,4 +188,12 @@ class ReaderTest extends FlatSpec with Matchers {
     swagger.getPaths().get("/testDeprecated").getGet().isDeprecated() should equal(true)
     swagger.getPaths().get("/testAllowed").getGet.isDeprecated() should be(null)
   }
+
+  it should "scan empty path annotation" in {
+    val reader = new Reader(new Swagger())
+    val swagger = reader.read(classOf[ResourceWithEmptyPath])
+
+    swagger.getPaths().get("/").getGet() should not be(null)
+
+  }
 }

modules/swagger-jaxrs/src/test/scala/resources/ResourceWithEmptyPath.java

@@ -0,0 +1,15 @@
+package resources;
+
+import io.swagger.annotations.Api;
+
+import javax.ws.rs.GET;
+import javax.ws.rs.Path;
+
+@Path("")
+@Api
+public class ResourceWithEmptyPath {
+
+    @GET
+    public void getTest() {
+    }
+}