[lldb-dap] add test case

Author: da-viper

lldb/test/API/tools/lldb-dap/coreFile/TestDAP_coreFile.py

@@ -61,6 +61,21 @@ def test_core_file(self):
         self.dap_server.request_next(threadId=32259)
         self.assertEqual(self.get_stackFrames(), expected_frames)
 
+    def test_wrong_core_file(self):
+        exe_file = self.getSourcePath("linux-x86_64.out")
+        wrong_core_file = self.getSourcePath("main.c")
+
+        self.create_debug_adapter()
+        resp = self.attach(
+            program=exe_file, coreFile=wrong_core_file, expectFailure=True
+        )
+        self.assertIsNotNone(resp)
+        self.assertFalse(resp["success"], "Expected failure in response {resp!r}")
+        error_msg = resp["body"]["error"]["format"]
+
+        # attach my fail for mutilple reasons.
+        self.assertEqual(error_msg, "Failed to create the process")
+
     @skipIfLLVMTargetMissing("X86")
     def test_core_file_source_mapping_array(self):
         """Test that sourceMap property is correctly applied when loading a core"""