switch to httpx + add tests

libs/cli/tests/unit_tests/test_host_backend.py

@@ -0,0 +1,162 @@
+import httpx
+import pytest
+
+from langgraph_cli.host_backend import HostBackendClient, HostBackendError
+
+
+@pytest.fixture
+def mock_transport():
+    return httpx.MockTransport(lambda req: httpx.Response(200, json={"ok": True}))
+
+
+@pytest.fixture
+def client(mock_transport):
+    c = HostBackendClient("https://api.example.com", "test-key")
+    c._client = httpx.Client(
+        base_url="https://api.example.com",
+        transport=mock_transport,
+        headers={"X-Api-Key": "test-key", "Accept": "application/json"},
+        timeout=30,
+    )
+    return c
+
+
+def test_constructor_strips_trailing_slash():
+    c = HostBackendClient("https://api.example.com/", "key")
+    assert str(c._client.base_url) == "https://api.example.com"
+
+
+def test_constructor_empty_url_raises():
+    with pytest.raises(Exception, match="Host backend URL is required"):
+        HostBackendClient("", "key")
+
+
+def test_request_sends_headers():
+    def handler(req: httpx.Request) -> httpx.Response:
+        assert req.headers["x-api-key"] == "test-key"
+        assert req.headers["accept"] == "application/json"
+        return httpx.Response(200, json={"ok": True})
+
+    c = HostBackendClient("https://api.example.com", "test-key")
+    c._client = httpx.Client(
+        base_url="https://api.example.com",
+        transport=httpx.MockTransport(handler),
+        headers={"X-Api-Key": "test-key", "Accept": "application/json"},
+        timeout=30,
+    )
+    result = c._request("GET", "/test")
+    assert result == {"ok": True}
+
+
+def test_request_sends_json_payload():
+    def handler(req: httpx.Request) -> httpx.Response:
+        assert req.headers["content-type"] == "application/json"
+        assert req.content == b'{"key":"value"}'
+        return httpx.Response(200, json={"created": True})
+
+    c = HostBackendClient("https://api.example.com", "test-key")
+    c._client = httpx.Client(
+        base_url="https://api.example.com",
+        transport=httpx.MockTransport(handler),
+        headers={"X-Api-Key": "test-key", "Accept": "application/json"},
+        timeout=30,
+    )
+    result = c._request("POST", "/test", {"key": "value"})
+    assert result == {"created": True}
+
+
+def test_request_empty_body_returns_none():
+    transport = httpx.MockTransport(lambda req: httpx.Response(200, content=b""))
+    c = HostBackendClient("https://api.example.com", "test-key")
+    c._client = httpx.Client(
+        base_url="https://api.example.com",
+        transport=transport,
+        headers={"X-Api-Key": "test-key", "Accept": "application/json"},
+        timeout=30,
+    )
+    assert c._request("DELETE", "/test") is None
+
+
+def test_request_http_error_raises():
+    transport = httpx.MockTransport(lambda req: httpx.Response(404, text="not found"))
+    c = HostBackendClient("https://api.example.com", "test-key")
+    c._client = httpx.Client(
+        base_url="https://api.example.com",
+        transport=transport,
+        headers={"X-Api-Key": "test-key", "Accept": "application/json"},
+        timeout=30,
+    )
+    with pytest.raises(HostBackendError, match="404"):
+        c._request("GET", "/missing")
+
+
+def test_request_invalid_json_raises():
+    transport = httpx.MockTransport(
+        lambda req: httpx.Response(200, content=b"not json")
+    )
+    c = HostBackendClient("https://api.example.com", "test-key")
+    c._client = httpx.Client(
+        base_url="https://api.example.com",
+        transport=transport,
+        headers={"X-Api-Key": "test-key", "Accept": "application/json"},
+        timeout=30,
+    )
+    with pytest.raises(HostBackendError, match="Failed to decode"):
+        c._request("GET", "/bad-json")
+
+
+def test_request_transport_error_raises():
+    def handler(req: httpx.Request) -> httpx.Response:
+        raise httpx.ConnectError("connection refused")
+
+    c = HostBackendClient("https://api.example.com", "test-key")
+    c._client = httpx.Client(
+        base_url="https://api.example.com",
+        transport=httpx.MockTransport(handler),
+        headers={"X-Api-Key": "test-key", "Accept": "application/json"},
+        timeout=30,
+    )
+    with pytest.raises(HostBackendError, match="connection refused"):
+        c._request("GET", "/test")
+
+
+def test_create_deployment(client):
+    result = client.create_deployment({"name": "my-deploy"})
+    assert result == {"ok": True}
+
+
+def test_get_deployment(client):
+    result = client.get_deployment("dep-123")
+    assert result == {"ok": True}
+
+
+def test_list_deployments(client):
+    result = client.list_deployments("my-app")
+    assert result == {"ok": True}
+
+
+def test_request_push_token(client):
+    result = client.request_push_token("dep-123")
+    assert result == {"ok": True}
+
+
+def test_update_deployment(client):
+    result = client.update_deployment(
+        "dep-123", "image:latest", secrets=[{"name": "KEY", "value": "val"}]
+    )
+    assert result == {"ok": True}
+
+
+def test_update_deployment_no_secrets(client):
+    result = client.update_deployment("dep-123", "image:latest")
+    assert result == {"ok": True}
+
+
+def test_list_revisions(client):
+    result = client.list_revisions("dep-123", limit=5)
+    assert result == {"ok": True}
+
+
+def test_get_revision(client):
+    result = client.get_revision("dep-123", "rev-456")
+    assert result == {"ok": True}