test: fix empty result

Signed-off-by: zhuwenxing <[email protected]>

tests/python_client/testcases/test_full_text_search.py

@@ -2238,9 +2238,10 @@ def test_full_text_search_default(
             collection_w.create_index("text", {"index_type": "INVERTED"})
         collection_w.load()
         limit = 100
-        search_data = [fake.text().lower() + " " + random.choice(tokens) for _ in range(nq)]
+        token = random.choice(tokens)
+        search_data = [fake.text().lower() + " " + token for _ in range(nq)]
         if expr == "text_match":
-            filter = f"TextMatch(text, '{tokens[0]}')"
+            filter = f"TextMatch(text, '{token}')"
             res, _ = collection_w.query(
                 expr=filter,
             )
@@ -2297,7 +2298,7 @@ def test_full_text_search_default(
                 result_text = r.text
                 # verify search result satisfies the filter
                 if expr == "text_match":
-                    assert tokens[0] in result_text
+                    assert token in result_text
                 if expr == "id_range":
                     assert _id < data_size // 2
                 # verify search result has overlap with search text
@@ -2433,9 +2434,10 @@ def test_full_text_search_with_jieba_tokenizer(
             collection_w.create_index("text", {"index_type": "INVERTED"})
         collection_w.load()
         limit = 100
-        search_data = [fake.text().lower() + " " + random.choice(tokens) for _ in range(nq)]
+        token = random.choice(tokens)
+        search_data = [fake.text().lower() + " " + token for _ in range(nq)]
         if expr == "text_match":
-            filter = f"TextMatch(text, '{tokens[0]}')"
+            filter = f"TextMatch(text, '{token}')"
             res, _ = collection_w.query(
                 expr=filter,
             )
@@ -2492,7 +2494,7 @@ def test_full_text_search_with_jieba_tokenizer(
                 result_text = r.text
                 # verify search result satisfies the filter
                 if expr == "text_match":
-                    assert tokens[0] in result_text
+                    assert token in result_text
                 if expr == "id_range":
                     assert _id < data_size // 2
                 # verify search result has overlap with search text
@@ -2501,7 +2503,6 @@ def test_full_text_search_with_jieba_tokenizer(
                 assert len(
                     overlap) > 0, f"query text: {search_text}, \ntext: {result_text} \n overlap: {overlap} \n word freq a: {word_freq_a} \n word freq b: {word_freq_b}\n result: {r}"
 
-
     @pytest.mark.tags(CaseLabel.L1)
     @pytest.mark.parametrize("nq", [1])
     @pytest.mark.parametrize("empty_percent", [0])