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| 1 | +"""Unit tests for the mcp 1.x/2.x compatibility shims.""" |
| 2 | + |
| 3 | +from types import SimpleNamespace |
| 4 | + |
| 5 | +from sap_cloud_sdk.agentgateway._compat import ( |
| 6 | + mcp_input_schema, |
| 7 | + mcp_is_error, |
| 8 | + mcp_server_name, |
| 9 | +) |
| 10 | + |
| 11 | + |
| 12 | +class TestMcpServerName: |
| 13 | + """Tests for mcp_server_name across both mcp majors.""" |
| 14 | + |
| 15 | + def test_reads_snake_case_server_info_mcp_2x(self): |
| 16 | + """mcp 2.x exposes ``server_info`` (snake_case).""" |
| 17 | + init = SimpleNamespace(server_info=SimpleNamespace(name="srv-2x")) |
| 18 | + assert mcp_server_name(init) == "srv-2x" |
| 19 | + |
| 20 | + def test_reads_camel_case_server_info_mcp_1x(self): |
| 21 | + """mcp 1.x exposes ``serverInfo`` (camelCase).""" |
| 22 | + init = SimpleNamespace(serverInfo=SimpleNamespace(name="srv-1x")) |
| 23 | + assert mcp_server_name(init) == "srv-1x" |
| 24 | + |
| 25 | + def test_returns_none_when_server_info_missing(self): |
| 26 | + """No server info field on either name -> None.""" |
| 27 | + assert mcp_server_name(SimpleNamespace()) is None |
| 28 | + |
| 29 | + def test_returns_none_when_name_missing(self): |
| 30 | + """server_info present but without a ``name`` -> None.""" |
| 31 | + init = SimpleNamespace(server_info=SimpleNamespace()) |
| 32 | + assert mcp_server_name(init) is None |
| 33 | + |
| 34 | + def test_returns_none_when_init_result_is_none(self): |
| 35 | + """A falsy init_result must not raise -> None.""" |
| 36 | + assert mcp_server_name(None) is None |
| 37 | + |
| 38 | + def test_works_against_real_installed_mcp_types(self): |
| 39 | + """Prove it works against the actually-installed mcp library.""" |
| 40 | + from mcp.types import Implementation, InitializeResult |
| 41 | + |
| 42 | + init = InitializeResult( |
| 43 | + protocolVersion="2025-06-18", |
| 44 | + capabilities={}, |
| 45 | + serverInfo=Implementation(name="real-srv", version="1.0.0"), |
| 46 | + ) |
| 47 | + assert mcp_server_name(init) == "real-srv" |
| 48 | + |
| 49 | + |
| 50 | +class TestMcpInputSchema: |
| 51 | + """Tests for mcp_input_schema across both mcp majors.""" |
| 52 | + |
| 53 | + def test_reads_snake_case_input_schema_mcp_2x(self): |
| 54 | + """mcp 2.x exposes ``input_schema`` (snake_case).""" |
| 55 | + tool = SimpleNamespace(input_schema={"type": "object"}) |
| 56 | + assert mcp_input_schema(tool) == {"type": "object"} |
| 57 | + |
| 58 | + def test_reads_camel_case_input_schema_mcp_1x(self): |
| 59 | + """mcp 1.x exposes ``inputSchema`` (camelCase).""" |
| 60 | + tool = SimpleNamespace(inputSchema={"type": "string"}) |
| 61 | + assert mcp_input_schema(tool) == {"type": "string"} |
| 62 | + |
| 63 | + def test_defaults_to_empty_dict_when_missing(self): |
| 64 | + """No schema field on either name -> {}.""" |
| 65 | + assert mcp_input_schema(SimpleNamespace()) == {} |
| 66 | + |
| 67 | + def test_defaults_to_empty_dict_when_none(self): |
| 68 | + """Schema explicitly None -> {}.""" |
| 69 | + assert mcp_input_schema(SimpleNamespace(input_schema=None)) == {} |
| 70 | + |
| 71 | + |
| 72 | +class TestMcpIsError: |
| 73 | + """Tests for mcp_is_error across both mcp majors.""" |
| 74 | + |
| 75 | + def test_reads_snake_case_is_error_mcp_2x(self): |
| 76 | + """mcp 2.x exposes ``is_error`` (snake_case).""" |
| 77 | + assert mcp_is_error(SimpleNamespace(is_error=True)) is True |
| 78 | + |
| 79 | + def test_reads_camel_case_is_error_mcp_1x(self): |
| 80 | + """mcp 1.x exposes ``isError`` (camelCase).""" |
| 81 | + assert mcp_is_error(SimpleNamespace(isError=True)) is True |
| 82 | + |
| 83 | + def test_false_when_flag_false(self): |
| 84 | + """An explicit False flag stays False.""" |
| 85 | + assert mcp_is_error(SimpleNamespace(is_error=False)) is False |
| 86 | + |
| 87 | + def test_defaults_to_false_when_missing(self): |
| 88 | + """No error field on either name -> False.""" |
| 89 | + assert mcp_is_error(SimpleNamespace()) is False |
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