Test: added testStudentPasses()

src/test/java/org/example/StudentTest.java

@@ -135,4 +135,15 @@ class StudentTest {
         assertEquals(expectedAverage, student.calculateAverageGrade(), 0.01, "The calculated average grade is incorrect.");
     }
 
+    @Test
+    void testStudentPasses() {
+        Student student = new Student("John Doe", "S1001", "Student");
+        Course math = new Course("Math", "C101", 5); // Assuming 5 credits
+        Course physics = new Course("Physics", "C102", 5); // Assuming 5 credits
+        student.assignGrade(math, "15"); // Assuming grade is a String. Adjust if it's numeric.
+        student.assignGrade(physics, "10");
+
+        assertTrue(student.hasPassed(), "Student should have passed.");
+    }
+
 }