[Hacker Rank] Interview Preparation Kit: Arrays: Array Manipulation. Test cases loaded from JSON using new utility.

Author: Gonzalo Diaz

algorithm-exercises-java/src/test/java/ae/hackerrank/interview_preparation_kit/arrays/CrushBruteForceTest.java

@@ -2,15 +2,13 @@
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 
-import com.fasterxml.jackson.databind.ObjectMapper;
-import java.io.File;
 import java.io.IOException;
 import java.util.List;
 import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.TestInstance;
 import org.junit.jupiter.api.TestInstance.Lifecycle;
-
+import util.JsonLoader;
 
 @TestInstance(Lifecycle.PER_CLASS)
 class CrushBruteForceTest {
@@ -26,22 +24,12 @@ public static class CrushBruteForceTestCase {
 
   @BeforeAll
   public void setup() throws IOException {
-    ObjectMapper objectMapper = new ObjectMapper();
 
     String path = String.join("/", "hackerrank",
         "interview_preparation_kit",
         "arrays",
         "crush.testcases.json");
-    File file = new File(
-        this.getClass()
-        .getClassLoader()
-        .getResource(path)
-        .getFile()
-    );
-
-    ObjectMapper mapper = new ObjectMapper();
-    this.testCases  = mapper.readerForListOf(CrushBruteForceTestCase.class)
-        .readValue(objectMapper.readTree(file));
+    this.testCases = JsonLoader.loadJson(path, CrushBruteForceTestCase.class);
   }
 
   @Test void testArrayManipulation() {

algorithm-exercises-java/src/test/java/ae/hackerrank/interview_preparation_kit/arrays/CrushTest.java

@@ -2,14 +2,13 @@
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 
-import com.fasterxml.jackson.databind.ObjectMapper;
-import java.io.File;
 import java.io.IOException;
 import java.util.List;
 import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.TestInstance;
 import org.junit.jupiter.api.TestInstance.Lifecycle;
+import util.JsonLoader;
 
 
 @TestInstance(Lifecycle.PER_CLASS)
@@ -26,22 +25,12 @@ public static class CrushTestCase {
 
   @BeforeAll
   public void setup() throws IOException {
-    ObjectMapper objectMapper = new ObjectMapper();
-
     String path = String.join("/", "hackerrank",
         "interview_preparation_kit",
         "arrays",
         "crush.testcases.json");
-    File file = new File(
-        this.getClass()
-        .getClassLoader()
-        .getResource(path)
-        .getFile()
-    );
-
-    ObjectMapper mapper = new ObjectMapper();
-    this.testCases  = mapper.readerForListOf(CrushTestCase.class)
-        .readValue(objectMapper.readTree(file));
+
+    this.testCases = JsonLoader.loadJson(path, CrushTestCase.class);
   }
 
   @Test void testArrayManipulation() {