diff --git a/src/test/java/org/ntlab/tampoposerver/models/FriendPairTest.java b/src/test/java/org/ntlab/tampoposerver/models/FriendPairTest.java
new file mode 100644
index 0000000..6fb65f1
--- /dev/null
+++ b/src/test/java/org/ntlab/tampoposerver/models/FriendPairTest.java
@@ -0,0 +1,25 @@
+package org.ntlab.tampoposerver.models;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+
+@SpringBootTest
+public class FriendPairTest {
+    @Test
+    public void verifyUserEquation() {
+        FriendPair testPair0 = new FriendPair("user0", "user1");
+        FriendPair testPair1 = new FriendPair("another_user0", "another_user1");
+
+        assertEquals("user0", testPair0.getUser0Id());
+        assertEquals("user1", testPair0.getUser1Id());
+        assertEquals("another_user0", testPair1.getUser0Id());
+        assertEquals("another_user1", testPair1.getUser1Id());
+        assertNotEquals("user1", testPair0.getUser0Id());
+        assertNotEquals("user0", testPair0.getUser1Id());
+        assertNotEquals("another_user1", testPair1.getUser0Id());
+        assertNotEquals("another_user0", testPair1.getUser1Id());
+    }
+}