feat(image-render): gpt_image provider + media helper (SP image)

services/image-render/tests/test_gpt_image.py

@@ -0,0 +1,32 @@
+import providers.gpt_image as gi
+
+
+def test_missing_key_reports_failed(monkeypatch):
+    monkeypatch.delenv("OPENAI_API_KEY", raising=False)
+    calls = []
+    monkeypatch.setattr(gi, "webhook_update_task", lambda *a, **k: calls.append((a, k)))
+    gi.run_gpt_image_generation("t1", {"prompt": "a cat"})
+    # 마지막 호출이 failed
+    assert calls[-1][0][1] == "failed"
+
+
+def test_success_saves_and_reports_url(monkeypatch):
+    monkeypatch.setenv("OPENAI_API_KEY", "sk-test")
+    calls = []
+    monkeypatch.setattr(gi, "webhook_update_task", lambda *a, **k: calls.append((a, k)))
+    monkeypatch.setattr(gi, "save_b64_png", lambda tid, b64: "/media/image/t1.png")
+
+    class FakeResp:
+        status_code = 200
+
+        def json(self):
+            return {"data": [{"b64_json": "ZmFrZQ=="}]}
+
+        def raise_for_status(self):
+            pass
+
+    monkeypatch.setattr(gi.requests, "post", lambda *a, **k: FakeResp())
+
+    gi.run_gpt_image_generation("t1", {"prompt": "a cat"})
+    succeeded = [c for c in calls if c[0][1] == "succeeded"]
+    assert succeeded and succeeded[-1][1]["image_url"] == "/media/image/t1.png"