Create UnsupportedClaimExceptionTest.java

app/common/src/test/java/stirling/software/common/model/exception/UnsupportedClaimExceptionTest.java

@@ -0,0 +1,45 @@
+package stirling.software.common.model.exception;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+@DisplayName("Tests for UnsupportedClaimException")
+class UnsupportedClaimExceptionTest {
+
+    @Test
+    @DisplayName("should store message passed to constructor")
+    void shouldStoreMessageFromConstructor() {
+        String expectedMessage = "This claim is not supported";
+        UnsupportedClaimException exception = new UnsupportedClaimException(expectedMessage);
+
+        // Verify the stored message
+        assertEquals(
+                expectedMessage,
+                exception.getMessage(),
+                "Constructor should correctly store the provided message");
+    }
+
+    @Test
+    @DisplayName("should be instance of RuntimeException")
+    void shouldBeInstanceOfRuntimeException() {
+        UnsupportedClaimException exception = new UnsupportedClaimException("msg");
+
+        // Verify that it inherits from RuntimeException
+        assertTrue(
+                exception instanceof RuntimeException,
+                "UnsupportedClaimException should extend RuntimeException");
+    }
+
+    @Test
+    @DisplayName("should allow null message without throwing exception")
+    void shouldAllowNullMessage() {
+        UnsupportedClaimException exception = new UnsupportedClaimException(null);
+
+        // Null message should be stored as null
+        assertNull(
+                exception.getMessage(),
+                "Constructor should accept null message and store it as null");
+    }
+}