#1638 Add Parameter Object pattern (#1650)

* #1638 Add Parameter Object pattern

* #1638 Fix comments and formatting for Parameter Object pattern

* #1638 Fix formatting, commenting, remove string concatenation in Parameter Object pattern

* #1638 Fix readme formatting and log parameter object

parameter-object/src/test/java/com/iluwatar/parameter/object/SearchServiceTest.java

@@ -0,0 +1,63 @@
+/*
+ * The MIT License
+ * Copyright © 2014-2019 Ilkka Seppälä
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+package com.iluwatar.parameter.object;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+class SearchServiceTest {
+  private static final Logger LOGGER = LoggerFactory.getLogger(SearchServiceTest.class);
+  private ParameterObject parameterObject;
+  private SearchService searchService;
+
+  @BeforeEach
+  public void setUp() {
+    //Creating parameter object with default values set
+    parameterObject = ParameterObject.newBuilder()
+        .withType("sneakers")
+        .build();
+
+    searchService = new SearchService();
+  }
+
+  /**
+   *  Testing parameter object against the overloaded method to verify if the behaviour is same.
+   */
+  @Test
+  public void testDefaultParametersMatch() {
+    assertEquals(searchService.search(parameterObject), searchService.search("sneakers",
+        SortOrder.ASC), "Default Parameter values do not not match.");
+    LOGGER.info("SortBy Default parameter value matches.");
+
+    assertEquals(searchService.search(parameterObject), searchService.search("sneakers",
+        "price"), "Default Parameter values do not not match.");
+    LOGGER.info("SortOrder Default parameter value matches.");
+
+    LOGGER.info("testDefaultParametersMatch executed successfully without errors.");
+  }
+}