Foundry Agent Test

tdx Agent Test

Run automated tests against agents using YAML test definitions. Tests are evaluated by a judge agent for binary pass/fail results.

Commands

# Run tests from current agent directory
tdx agent test

# Run tests from specific path
tdx agent test ./agents/my-project/my-agent/

# Run specific tests by name
tdx agent test --name "greeting_test" --name "context_test"

# Run tests with specific tags
tdx agent test --tags "smoke,regression"

# Validate test file without running
tdx agent test --dry-run

# Run without evaluation (just execute conversations)
tdx agent test --no-eval

# Re-evaluate last test run with updated criteria
tdx agent test --reeval

Test File Structure

Create test.yml in your agent directory:

agents/{project-name}/{agent-name}/
├── agent.yml
├── prompt.md
└── test.yml

test.yml Format

Single-Round Tests (Flat Format)

tests:
  - name: greeting_test
    tags: [smoke, core]
    user_input: Hello
    criteria: Should respond with a friendly greeting

  - name: calculation_test
    tags: [regression]
    user_input: What is 2 + 2?
    criteria: Should respond with the correct answer (4)

Multi-Round Tests (Rounds Format)

tests:
  - name: context_memory_test
    tags: [memory, core]
    rounds:
      - user_input: My name is Alice
        criteria: Should acknowledge the name
      - user_input: What's my name?
        criteria: Should remember and respond with "Alice"

  - name: multi_step_task
    rounds:
      - user_input: I want to analyze sales data
        criteria: Should ask clarifying questions about the data
      - user_input: It's in the sales_2024 table
        criteria: Should acknowledge and proceed with analysis

Writing Good Criteria

Criteria are evaluated by a judge agent. Be specific and measurable:

# Good - specific and measurable
criteria: Should respond with the number 4

# Good - describes expected behavior
criteria: Should ask for the customer's email address before proceeding

# Good - includes negative constraints
criteria: Should provide help without mentioning competitor products

# Bad - too vague
criteria: Should give a good response

# Bad - subjective
criteria: Should be helpful and friendly

Writing Good Test Cases

Test Core Functionality

tests:
  - name: primary_use_case
    user_input: Help me with a billing question
    criteria: Should ask clarifying questions about the billing issue

Re-evaluation Workflow

Iterate on criteria without re-running conversations:

# 1. Run tests to generate conversations
tdx agent test

# 2. Edit criteria in test.yml

# 3. Re-evaluate with cached conversations
tdx agent test --reeval

Cache is stored in .cache/tdx/last_agent_test_run.json.

Options

Related Skills

• agent - Agent configuration and pull/push workflow
• foundry-agent-prompt - Writing effective system prompts