zero-config planoai up: synthesize pass-through proxy when no config file

cli/test/test_defaults.py

@@ -0,0 +1,71 @@
+from pathlib import Path
+
+import jsonschema
+import yaml
+
+from planoai.defaults import (
+    PROVIDER_DEFAULTS,
+    detect_providers,
+    synthesize_default_config,
+)
+
+
+_SCHEMA_PATH = Path(__file__).parents[2] / "config" / "plano_config_schema.yaml"
+
+
+def _schema() -> dict:
+    return yaml.safe_load(_SCHEMA_PATH.read_text())
+
+
+def test_zero_env_vars_produces_pure_passthrough():
+    cfg = synthesize_default_config(env={})
+    assert cfg["version"] == "v0.4.0"
+    assert cfg["listeners"][0]["port"] == 12000
+    for provider in cfg["model_providers"]:
+        assert provider.get("passthrough_auth") is True
+        assert "access_key" not in provider
+    # All known providers should be listed.
+    names = {p["name"] for p in cfg["model_providers"]}
+    assert "do" in names
+    assert "openai" in names
+    assert "anthropic" in names
+
+
+def test_env_keys_promote_providers_to_env_keyed():
+    cfg = synthesize_default_config(
+        env={"OPENAI_API_KEY": "sk-1", "DO_API_KEY": "do-1"}
+    )
+    by_name = {p["name"]: p for p in cfg["model_providers"]}
+    assert by_name["openai"].get("access_key") == "$OPENAI_API_KEY"
+    assert by_name["openai"].get("passthrough_auth") is None
+    assert by_name["do"].get("access_key") == "$DO_API_KEY"
+    # Unset env keys remain pass-through.
+    assert by_name["anthropic"].get("passthrough_auth") is True
+
+
+def test_detection_summary_strings():
+    det = detect_providers(env={"OPENAI_API_KEY": "sk", "DO_API_KEY": "d"})
+    summary = det.summary
+    assert "env-keyed" in summary and "openai" in summary and "do" in summary
+    assert "pass-through" in summary
+
+
+def test_tracing_block_points_at_local_console():
+    cfg = synthesize_default_config(env={})
+    tracing = cfg["tracing"]
+    assert tracing["opentracing_grpc_endpoint"] == "http://localhost:4317"
+    # random_sampling is a percentage in the plano config — 100 = every span.
+    assert tracing["random_sampling"] == 100
+
+
+def test_synthesized_config_validates_against_schema():
+    cfg = synthesize_default_config(env={"OPENAI_API_KEY": "sk"})
+    jsonschema.validate(cfg, _schema())
+
+
+def test_provider_defaults_do_is_configured():
+    by_name = {p.name: p for p in PROVIDER_DEFAULTS}
+    assert "do" in by_name
+    assert by_name["do"].env_var == "DO_API_KEY"
+    assert by_name["do"].base_url == "https://inference.do-ai.run/v1"
+    assert by_name["do"].model_pattern == "do/*"