Rename test_studio_run.py -> test_studio_api.py

The file is entirely about HTTP API endpoint testing (OpenAI-compatible
/v1/chat/completions, Anthropic-compatible /v1/messages, API key auth,
plus a CLI --help sanity check on the command that runs the API). None
of its tests cover training, export, chat-UI, or internal-Python-API
concerns.

The old name misleadingly suggested "tests for the unsloth studio run
CLI subcommand" — the new name reflects the actual scope.

Updates:
- git mv the file (rename tracked, history preserved)
- Rewrite opening docstring to state the API surface focus and call
  out what is explicitly out of scope
- Update all 4 Usage-block path references to the new filename
- LOG_FILE renamed to test_studio_api.log
- conftest.py fixture import rewritten from test_studio_run to
  test_studio_api, plus 7 docstring/comment references updated

No functional changes to test logic, signatures, or main().

studio/backend/tests/conftest.py

@@ -9,7 +9,7 @@ Responsibilities:
    (and similar flat imports) resolve in test modules — mirrors how the
    app itself is launched.
 2. Provide a hybrid ``studio_server`` session fixture for end-to-end tests
-   (see ``test_studio_run.py``). The fixture supports two invocation modes:
+   (see ``test_studio_api.py``). The fixture supports two invocation modes:
 
    a. **External server.** If ``UNSLOTH_E2E_BASE_URL`` is set, tests point
       at an already-running Studio instance. ``UNSLOTH_E2E_API_KEY`` must
@@ -24,7 +24,7 @@ Responsibilities:
    The model / variant for mode (b) come from ``--unsloth-model`` /
    ``--unsloth-gguf-variant`` pytest options, then ``UNSLOTH_E2E_MODEL`` /
    ``UNSLOTH_E2E_VARIANT`` env vars, then the defaults in
-   ``test_studio_run.py``.
+   ``test_studio_api.py``.
 """
 
 import os
@@ -54,7 +54,7 @@ def pytest_addoption(parser):
         help = (
             "GGUF model id used when starting a server for e2e tests. "
             "Ignored if UNSLOTH_E2E_BASE_URL is set. Overrides "
-            "UNSLOTH_E2E_MODEL env var. Defaults to test_studio_run.py's "
+            "UNSLOTH_E2E_MODEL env var. Defaults to test_studio_api.py's "
             "DEFAULT_MODEL."
         ),
     )
@@ -65,7 +65,7 @@ def pytest_addoption(parser):
         help = (
             "GGUF variant used when starting a server for e2e tests. "
             "Ignored if UNSLOTH_E2E_BASE_URL is set. Overrides "
-            "UNSLOTH_E2E_VARIANT env var. Defaults to test_studio_run.py's "
+            "UNSLOTH_E2E_VARIANT env var. Defaults to test_studio_api.py's "
             "DEFAULT_VARIANT."
         ),
     )
@@ -83,7 +83,7 @@ def studio_server(request):
     1. If ``UNSLOTH_E2E_BASE_URL`` is set → point at that server,
        require ``UNSLOTH_E2E_API_KEY`` alongside (skip if missing).
     2. Otherwise → start a fresh ``unsloth studio run`` subprocess via
-       the existing ``_start_server`` helper in ``test_studio_run.py``
+       the existing ``_start_server`` helper in ``test_studio_api.py``
        and tear it down on session teardown.
 
     Session-scoped so the expensive GGUF load happens at most once per
@@ -103,10 +103,10 @@ def studio_server(request):
         yield external_url, api_key
         return
 
-    # Lazy import: pytest has already loaded test_studio_run into
+    # Lazy import: pytest has already loaded test_studio_api into
     # sys.modules by the time any test requests this fixture, so this
     # is a cache hit, not a re-execution.
-    import test_studio_run as _e2e
+    import test_studio_api as _e2e
 
     model = (
         request.config.getoption("--unsloth-model")

studio/backend/tests/test_studio_api.py

@@ -2,10 +2,11 @@
 # Copyright 2026-present the Unsloth AI Inc. team. All rights reserved. See /studio/LICENSE.AGPL-3.0
 
 """
-End-to-end tests for ``unsloth studio run`` and API key authentication.
+End-to-end tests for Unsloth Studio's HTTP API surface.
 
-Exercises the usage examples shown on the API Keys page plus the Anthropic
-Messages API:
+Covers the OpenAI-compatible and Anthropic-compatible endpoints exposed
+by the server that ``unsloth studio run`` boots, plus API key
+authentication and the CLI's ``--help`` output:
 
     1. curl -- basic chat completions (non-streaming)
     2. curl -- streaming chat completions
@@ -16,24 +17,25 @@ Messages API:
     7. Anthropic Python SDK -- non-streaming
     8. Anthropic Messages API -- streaming with tools
 
-The test also validates the ``--help`` output and the server banner.
+Training, export, fine-tuning, and chat-UI concerns are out of scope —
+see the unit suites elsewhere under ``studio/backend/tests/`` for those.
 
 Usage:
 
     # Script mode — launches its own server via ``unsloth studio run``.
-    python tests/test_studio_run.py
-    python tests/test_studio_run.py --model unsloth/... --gguf-variant ...
+    python tests/test_studio_api.py
+    python tests/test_studio_api.py --model unsloth/... --gguf-variant ...
 
     # Pytest mode, external server — start a Studio server yourself,
     # then point pytest at it. Fastest iteration loop.
     unsloth studio run --model unsloth/Qwen3-1.7B-GGUF --gguf-variant UD-Q4_K_XL &
     export UNSLOTH_E2E_BASE_URL=http://127.0.0.1:8080
     export UNSLOTH_E2E_API_KEY=sk-unsloth-...   # from the server banner
-    pytest tests/test_studio_run.py -v
+    pytest tests/test_studio_api.py -v
 
     # Pytest mode, fixture-managed server — pytest launches and tears
     # down the server itself. One-shot verification, CI-friendly.
-    pytest tests/test_studio_run.py -v \\
+    pytest tests/test_studio_api.py -v \\
         --unsloth-model unsloth/Qwen3-1.7B-GGUF \\
         --unsloth-gguf-variant UD-Q4_K_XL
 
@@ -68,7 +70,7 @@ STARTUP_TIMEOUT = 120  # seconds to wait for banner
 LOG_FILE = (
     Path(__file__).resolve().parent.parent.parent.parent
     / "temp"
-    / "test_studio_run.log"
+    / "test_studio_api.log"
 )