diff --git a/.github/instructions.md b/.github/instructions.md
index 992c99c..7bd59c6 100644
--- a/.github/instructions.md
+++ b/.github/instructions.md
@@ -1 +1 @@
-- test names should follow naming rules like given (optional) ... when (required) ... then(required)
\ No newline at end of file
+- test function names should follow naming rules like given (optional) ... when (required) ... then(required)
\ No newline at end of file
diff --git a/app/src/test/java/com/coderabbit/app/calculator/CalculatorTest.kt b/app/src/test/java/com/coderabbit/app/calculator/CalculatorTest.kt
index 0416e1d..ba20e53 100644
--- a/app/src/test/java/com/coderabbit/app/calculator/CalculatorTest.kt
+++ b/app/src/test/java/com/coderabbit/app/calculator/CalculatorTest.kt
@@ -1,5 +1,6 @@
 package com.coderabbit.app.calculator
 
+import org.junit.Assert.assertEquals
 import org.junit.Assert.assertTrue
 import org.junit.Test
 
@@ -10,4 +11,10 @@ class CalculatorTest {
         val calculator = Calculator()
         assertTrue(calculator.add(1,2) == 3)
     }
+
+    @Test
+    fun `test add function equals`() {
+        val calculator = Calculator()
+        assertEquals(calculator.add(1,2) ,3)
+    }
 }
\ No newline at end of file