[e2e Test][npugraph_ex]add static kernel e2e test case (#6320)

### What this PR does / why we need it?
Added an E2E test case for the scenario of enabling a static kernel for
npugraph_ex, monitoring its compilation and unloading process.
Also fixed the previously existing spelling errors

- vLLM version: v0.14.1
- vLLM main:
dc917cceb8

---------

Signed-off-by: chencangtao <chencangtao@huawei.com>
Co-authored-by: chencangtao <chencangtao@huawei.com>

tests/e2e/singlecard/test_aclgraph_accuracy.py

@@ -16,6 +16,7 @@
 #
 
 import pytest
+import os
 
 from tests.e2e.singlecard.utils import (PROMPTS_LONG, PROMPTS_SHORT,
                                         LLMTestCase, gen_and_valid)
@@ -133,3 +134,34 @@ def test_npugraph_ex_res_consistency(cur_case: LLMTestCase, monkeypatch):
                   prompts=cur_case.prompts,
                   sampling_params=cur_case.sampling_params,
                   golden_answers=cur_case.golden_answers)
+
+# The accuracy has already been verified in the previous test case.
+# This test case is used to check whether the functionality works properly
+# after enabling the static kernel and whether it is uninstalled as expected.
+@pytest.mark.parametrize("cur_case", [CASE_QWEN_EX])
+def test_npugraph_ex_with_static_kernel(cur_case: LLMTestCase, monkeypatch):
+    monkeypatch.delenv("HCCL_OP_EXPANSION_MODE", raising=False)
+    runner_kwargs = {
+        "model_name": cur_case.model,
+        "quantization": cur_case.quantization,
+        "max_model_len": 1024,
+        "compilation_config": {
+            "cudagraph_capture_sizes": [4, 8],
+            "cudagraph_mode": "FULL_DECODE_ONLY"
+        },
+        "additional_config": {
+            "npugraph_ex_config": {
+                "enable": True,
+                "enable_static_kernel": True,
+            }
+        },
+    }
+    gen_and_valid(runner_kwargs=runner_kwargs,
+                  prompts=cur_case.prompts,
+                  sampling_params=cur_case.sampling_params,
+                  golden_answers=cur_case.golden_answers)
+
+    # Check whether the static kernel is properly uninstall
+    ascend_home_path = os.environ["ASCEND_HOME_PATH"]
+    static_kernel_install_path = os.path.join(ascend_home_path, 'opp/static_kernel/ai_core')
+    assert not os.path.exists(static_kernel_install_path)