test: split provider endpoint tests (#4961)

tests/test_provider_endpoints_normalization.py

@@ -0,0 +1,49 @@
+"""Provider endpoint normalization tests.
+
+Covers ``normalize_base`` (strip whatever path the user pasted), and the
+provider-root helpers ``_anthropic_api_root`` and ``_ollama_api_root``.
+"""
+import pytest
+
+from src import endpoint_resolver as er
+
+
+# ── normalize_base: strip whatever path the user pasted ──
+
+@pytest.mark.parametrize("raw,expected", [
+    ("https://api.openai.com/v1/chat/completions", "https://api.openai.com/v1"),
+    ("https://api.openai.com/v1/completions", "https://api.openai.com/v1"),
+    ("https://api.openai.com/v1/models/", "https://api.openai.com/v1"),
+    ("https://api.anthropic.com/v1/messages", "https://api.anthropic.com"),
+    ("http://localhost:11434/api/chat", "http://localhost:11434/api"),
+    ("http://localhost:11434/api/tags", "http://localhost:11434/api"),
+    ("http://localhost:11434/api/generate", "http://localhost:11434/api"),
+    ("https://api.openai.com/v1/", "https://api.openai.com/v1"),
+    ("  https://api.openai.com/v1  ", "https://api.openai.com/v1"),
+    ("", ""),
+    (None, ""),
+])
+def test_normalize_base(raw, expected):
+    assert er.normalize_base(raw) == expected
+
+
+# ── provider-root helpers ──
+
+@pytest.mark.parametrize("base,expected", [
+    ("https://api.anthropic.com/v1", "https://api.anthropic.com"),
+    ("https://api.anthropic.com", "https://api.anthropic.com"),
+    # /v1 on a non-Anthropic host (OpenAI-compatible) must be preserved.
+    ("https://api.openai.com/v1", "https://api.openai.com/v1"),
+])
+def test_anthropic_api_root(base, expected):
+    assert er._anthropic_api_root(base) == expected
+
+
+@pytest.mark.parametrize("base,expected", [
+    ("https://ollama.com", "https://ollama.com/api"),
+    ("http://localhost:11434/api", "http://localhost:11434/api"),
+    # A non-Ollama host is returned untouched.
+    ("https://api.openai.com/v1", "https://api.openai.com/v1"),
+])
+def test_ollama_api_root(base, expected):
+    assert er._ollama_api_root(base) == expected