[Misc] Fix chat input string in xgrammar format

Accelerator1996 · Accelerator1996 · commit 0f2e04560deb · 2025-04-08T15:35:20.000+08:00
Signed-off-by: lvfei.lv &lt;lvfei.lv@alibaba-inc.com&gt;
diff --git a/tests/tool_use/utils.py b/tests/tool_use/utils.py
@@ -187,7 +187,11 @@ def ensure_system_prompt(messages: list[dict[str, Any]],
                 "unit": {
                     "type": "string",
                     "description": "The unit to fetch the temperature in",
-                    "enum": ["celsius", "fahrenheit"]
+                    "oneOf": [{
+                        "const": "celsius"
+                    }, {
+                        "const": "fahrenheit"
+                    }]
                 }
             }
         }

Original file line number	Diff line number	Diff line change
`@@ -187,7 +187,11 @@ def ensure_system_prompt(messages: list[dict[str, Any]],`
`187`	`187`	`"unit": {`
`188`	`188`	`"type": "string",`
`189`	`189`	`"description": "The unit to fetch the temperature in",`
`190`		`- "enum": ["celsius", "fahrenheit"]`
	`190`	`+ "oneOf": [{`
	`191`	`+ "const": "celsius"`
	`192`	`+ }, {`
	`193`	`+ "const": "fahrenheit"`
	`194`	`+ }]`
`191`	`195`	`}`
`192`	`196`	`}`
`193`	`197`	`}`