feat: implement hashCode and equals methods in DataValue class, add unit tests for DataValue and GsAPI classes

Author: codeNilson

src/main/java/io/github/codenilson/gsapi_core/models/DataValue.java

@@ -74,4 +74,46 @@ public void setStartRange(String range) {
     public String toString() {
         return "DataValue [rowData=" + values + ", startRange=" + startRange + "]";
     }
-}
+
+    /**
+     * Computes a hash code for this DataValue object.
+     *
+     * @return A hash code value for this object.
+     */
+    @Override
+    public int hashCode() {
+        final int prime = 31;
+        int result = 1;
+        result = prime * result + ((values == null) ? 0 : values.hashCode());
+        result = prime * result + ((startRange == null) ? 0 : startRange.hashCode());
+        return result;
+    }
+
+    /**
+     * Compares this DataValue object to another object for equality.
+     *
+     * @param obj The object to compare to.
+     * @return {@code true} if the objects are equal; {@code false} otherwise.
+     */
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj)
+            return true;
+        if (obj == null)
+            return false;
+        if (getClass() != obj.getClass())
+            return false;
+        DataValue other = (DataValue) obj;
+        if (values == null) {
+            if (other.values != null)
+                return false;
+        } else if (!values.equals(other.values))
+            return false;
+        if (startRange == null) {
+            if (other.startRange != null)
+                return false;
+        } else if (!startRange.equals(other.startRange))
+            return false;
+        return true;
+    }
+}

src/test/java/io/github/codenilson/gsapi_core/GsAPITest.java

@@ -0,0 +1,74 @@
+package io.github.codenilson.gsapi_core;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.when;
+
+import java.io.IOException;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Optional;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+import io.github.codenilson.gsapi_core.client.GoogleSheetsClient;
+import io.github.codenilson.gsapi_core.errors.GSAPIError;
+import io.github.codenilson.gsapi_core.models.DataValue;
+
+public class GsAPITest {
+
+    @Mock
+    private GoogleSheetsClient client;
+
+    private GsAPI api;
+
+    @BeforeEach
+    void setUp() throws Exception {
+
+        MockitoAnnotations.openMocks(this);
+
+        List<List<Object>> values = Arrays.asList(
+                Arrays.asList("header", "header2", "header3"),
+                Arrays.asList("Test", "Test2", "Test3"),
+                Arrays.asList("Test4", "Test5", "Test6"));
+
+        when(client.fetchValues(any(SheetRequest.class))).thenReturn(values);
+
+        api = new GsAPI(client);
+    }
+
+    @Test
+    void testRetrieveData() {
+        DataValue dataValue1 = new DataValue(Arrays.asList("Test", "Test2", "Test3"), 1);
+        DataValue dataValue2 = new DataValue(Arrays.asList("Test4", "Test5", "Test6"), 2);
+
+        List<DataValue> expected = Arrays.asList(dataValue1, dataValue2);
+
+        List<DataValue> result = api.retrieveData(new SheetRequest("test-id", "A1:C3")).get();
+
+        Assertions.assertEquals(expected, result, "retrieveData() should return the expected data values.");
+
+    }
+
+    @Test
+    void testRetrieveDataRaisesGsAPIErrorIfDataIsNull() throws IOException {
+        when(client.fetchValues(any(SheetRequest.class))).thenReturn(null);
+
+        Optional<List<DataValue>> result = api.retrieveData(new SheetRequest("test-id", "A1:C3"));
+
+        Assertions.assertTrue(result.isEmpty(), "Expected Optional.empty() when values are null");
+
+    }
+
+    @Test
+    void testRetrieveDataThrowsGSAPIErrorOnIOException() throws IOException {
+        when(client.fetchValues(any(SheetRequest.class))).thenThrow(new IOException("Network error"));
+
+        Assertions.assertThrows(GSAPIError.class, () -> {
+            api.retrieveData(new SheetRequest("test-id", "A1:C3"));
+        }, "Expected GSAPIError to be thrown when an IOException occurs");
+    }
+}

src/test/java/io/github/codenilson/gsapi_core/DataValueTest.java renamed to src/test/java/io/github/codenilson/gsapi_core/models/DataValueTest.java

@@ -1,4 +1,4 @@
-package io.github.codenilson.gsapi_core;
+package io.github.codenilson.gsapi_core.models;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -7,8 +7,6 @@
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
-import io.github.codenilson.gsapi_core.models.DataValue;
-
 public class DataValueTest {
 
     private DataValue dataValue;

src/test/java/io/github/codenilson/gsapi_core/AuthenticatorTest.java renamed to src/test/java/io/github/codenilson/gsapi_core/utils/AuthenticatorTest.java

@@ -1,4 +1,4 @@
-package io.github.codenilson.gsapi_core;
+package io.github.codenilson.gsapi_core.utils;
 
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.Mockito.mock;
@@ -18,7 +18,6 @@
 import com.google.auth.oauth2.GoogleCredentials;
 
 import io.github.codenilson.gsapi_core.errors.GSAPIError;
-import io.github.codenilson.gsapi_core.utils.Authenticator;
 
 class AuthenticatorTest {