Create H2JUnitTest.java (#17949)

Author: Deepak-Vohra

libraries-data-db/src/test/java/com/baeldung/libraries/h2/H2JUnitTest.java

@@ -0,0 +1,27 @@
+package com.baeldung.libraries.h2;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+import java.sql.*;
+
+public class H2JUnitTest {
+
+    @Test
+    public static void whenConnectingToSpecificSchema_ShouldReturnTheSpecificSchema() throws Exception {
+        Connection conn = DriverManager.getConnection(
+          "jdbc:h2:~/TEST_DB;INIT=CREATE SCHEMA IF NOT EXISTS TEST_SCHEMA\\;SET SCHEMA TEST_SCHEMA",
+          "sa",
+          "");
+      
+        Statement stmt=conn.createStatement();
+      
+        ResultSet rs=stmt.executeQuery("SELECT CURRENT_SCHEMA");
+        rs.first();
+      
+        String actualSchema = rs.getString(1);
+        String expectedSchema = new String("TEST_SCHEMA");
+
+        Assertions.assertTrue(actualSchema.equals(expectedSchema));
+    }
+
+}