release initial code

Co-authored-by: Ying Sheng <sqy1415@gmail.com>
Co-authored-by: Liangsheng Yin <hnyls2002@gmail.com>
Co-authored-by: Zhiqiang Xie <xiezhq@stanford.edu>
Co-authored-by: parasol-aser <3848358+parasol-aser@users.noreply.github.com>
Co-authored-by: LiviaSun <33578456+ChuyueSun@users.noreply.github.com>
Co-authored-by: Cody Yu <hao.yu.cody@gmail.com>

test/lang/test_openai_backend.py

@@ -0,0 +1,91 @@
+import unittest
+
+from sglang.test.test_programs import (
+    test_decode_int,
+    test_decode_json,
+    test_expert_answer,
+    test_few_shot_qa,
+    test_image_qa,
+    test_mt_bench,
+    test_parallel_decoding,
+    test_parallel_encoding,
+    test_react,
+    test_select,
+    test_stream,
+    test_tool_use,
+)
+
+from sglang import OpenAI, set_default_backend
+
+
+class TestOpenAIBackend(unittest.TestCase):
+    backend = None
+    chat_backend = None
+    chat_vision_backend = None
+
+    def setUp(self):
+        cls = type(self)
+
+        if cls.backend is None:
+            cls.backend = OpenAI("gpt-3.5-turbo-instruct")
+            cls.chat_backend = OpenAI("gpt-3.5-turbo")
+            cls.chat_vision_backend = OpenAI("gpt-4-vision-preview")
+
+    def test_few_shot_qa(self):
+        set_default_backend(self.backend)
+        test_few_shot_qa()
+
+    def test_mt_bench(self):
+        set_default_backend(self.chat_backend)
+        test_mt_bench()
+
+    def test_select(self):
+        set_default_backend(self.backend)
+        test_select(check_answer=True)
+
+    def test_decode_int(self):
+        set_default_backend(self.backend)
+        test_decode_int()
+
+    def test_decode_json(self):
+        set_default_backend(self.backend)
+        test_decode_json()
+
+    def test_expert_answer(self):
+        set_default_backend(self.backend)
+        test_expert_answer()
+
+    def test_tool_use(self):
+        set_default_backend(self.backend)
+        test_tool_use()
+
+    def test_react(self):
+        set_default_backend(self.backend)
+        test_react()
+
+    def test_parallel_decoding(self):
+        set_default_backend(self.backend)
+        test_parallel_decoding()
+
+    def test_parallel_encoding(self):
+        set_default_backend(self.backend)
+        test_parallel_encoding()
+
+    def test_image_qa(self):
+        set_default_backend(self.chat_vision_backend)
+        test_image_qa()
+
+    def test_stream(self):
+        set_default_backend(self.backend)
+        test_stream()
+
+
+if __name__ == "__main__":
+    unittest.main(warnings="ignore")
+
+    # from sglang.global_config import global_config
+
+    # global_config.verbosity = 2
+    # t = TestOpenAIBackend()
+    # t.setUp()
+    # t.test_decode_json()