Skip to main content
Glama

generate_edge_case_tests

Generates edge-case unittest suites for a Python function from its name, signature, and docstring to expose boundary and failure conditions before release.

Instructions

Generates edge-case unittest suites for a function.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "function_name": "<function_name>"
    },
    "name": "generate_edge_case_tests"
  }
}

Input Schema

NameRequiredDescriptionDefault
docstringNoDocstring description.
signatureNoFunction signature.
function_nameYesTarget function name.

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.2.0

TDQS

B3.1/5.0
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries the full burden of behavioral disclosure, and it falls short. It does not say whether the generated suite is returned as text or written to disk, whether it targets Python's unittest framework specifically, whether it overwrites existing test files, or whether it requires an existing function in the codebase.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

It is one sentence with zero wasted words and is front-loaded with the action. The brevity reflects a lack of detail rather than a structural flaw, but there is no padding or burying of key information.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a code-generating tool with no annotations and no output schema, the description is far too thin. An agent needs to know the output format, target language or framework, and side effects, and none of that is stated.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so all three parameters (function_name, signature, docstring) are already documented; baseline 3 applies. The description adds nothing about the parameters, such as whether signature and docstring are optional supplements that improve output quality.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

A clear verb-plus-resource statement: 'Generates edge-case unittest suites for a function' tells an agent exactly what it produces and for what input. It does not distinguish itself from the sibling tools (audit_test_assertions, decompile_stack_trace), though those visibly serve different purposes, so no sibling-routing guidance is provided.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The phrase 'edge-case' and 'for a function' implies the usage context: use this when you already have a target function and want tests generated for its edge cases. However, there is no explicit when-to-use, no prerequisites (such as whether the function source or docstring must exist first), and no alternatives.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.