"""
Integration tests for JSON minification in tool responses.
Verifies that canonical_tool decorator produces TextContent with minified JSON.
"""
from mcp.types import TextContent
class TestJsonMinification:
"""Verify tool responses are minified TextContent."""
def test_tool_returns_textcontent(self, mcp_server):
"""Tool response should be TextContent, not dict."""
tools = mcp_server._tool_manager._tools
result = tools["spec"].fn(action="list", status="all")
assert isinstance(result, TextContent), f"Expected TextContent, got {type(result).__name__}"
def test_response_has_no_newlines(self, mcp_server):
"""Minified JSON should have no newlines."""
tools = mcp_server._tool_manager._tools
result = tools["spec"].fn(action="list", status="all")
assert "\n" not in result.text, "Minified JSON should not contain newlines"
def test_response_has_no_indentation(self, mcp_server):
"""Minified JSON should have no indentation (double spaces)."""
tools = mcp_server._tool_manager._tools
result = tools["spec"].fn(action="list", status="all")
assert " " not in result.text, "Minified JSON should not contain indentation"
def test_response_is_valid_json(self, mcp_server):
"""Response text should be valid parseable JSON."""
import json
tools = mcp_server._tool_manager._tools
result = tools["spec"].fn(action="list", status="all")
parsed = json.loads(result.text)
assert isinstance(parsed, dict), "Parsed JSON should be a dict"
assert "success" in parsed, "Response should have 'success' key"
def test_minified_vs_pretty_size_difference(self, mcp_server):
"""Minified JSON should be smaller than pretty-printed."""
import json
tools = mcp_server._tool_manager._tools
result = tools["spec"].fn(action="list", status="all")
parsed = json.loads(result.text)
pretty = json.dumps(parsed, indent=2)
minified = result.text
assert len(minified) < len(pretty), (
f"Minified ({len(minified)} chars) should be smaller than pretty-printed ({len(pretty)} chars)"
)
