crush/CRUSH.md

Crush Development Guide

Build/Test/Lint Commands

• Build: go build . or go run .
• Test: task test or go test ./... (run single test: go test ./internal/llm/prompt -run TestGetContextFromPaths)
• Update Golden Files: go test ./... -update (regenerates .golden files when test output changes)
  • Update specific package: go test ./internal/tui/components/core -update (in this case, we're updating "core")
• Lint: task lint-fix
• Format: task fmt (gofumpt -w .)
• Dev: task dev (runs with profiling enabled)

Code Style Guidelines

• Imports: Use goimports formatting, group stdlib, external, internal packages
• Formatting: Use gofumpt (stricter than gofmt), enabled in golangci-lint
• Naming: Standard Go conventions - PascalCase for exported, camelCase for unexported
• Types: Prefer explicit types, use type aliases for clarity (e.g., type AgentName string)
• Error handling: Return errors explicitly, use fmt.Errorf for wrapping
• Context: Always pass context.Context as first parameter for operations
• Interfaces: Define interfaces in consuming packages, keep them small and focused
• Structs: Use struct embedding for composition, group related fields
• Constants: Use typed constants with iota for enums, group in const blocks
• Testing: Use testify's require package, parallel tests with t.Parallel(), t.SetEnv() to set environment variables. Always use t.Tempdir() when in need of a temporary directory. This directory does not need to be removed.
• JSON tags: Use snake_case for JSON field names
• File permissions: Use octal notation (0o755, 0o644) for file permissions
• Comments: End comments in periods unless comments are at the end of the line.

Testing with Mock Providers

When writing tests that involve provider configurations, use the mock providers to avoid API calls:

func TestYourFunction(t *testing.T) {
    // Enable mock providers for testing
    originalUseMock := config.UseMockProviders
    config.UseMockProviders = true
    defer func() {
        config.UseMockProviders = originalUseMock
        config.ResetProviders()
    }()

    // Reset providers to ensure fresh mock data
    config.ResetProviders()

    // Your test code here - providers will now return mock data
    providers := config.Providers()
    // ... test logic
}

Formatting

• ALWAYS format any Go code you write.
  • First, try goftumpt -w ..
  • If gofumpt is not available, use goimports.
  • If goimports is not available, use gofmt.
  • You can also use task fmt to run gofumpt -w . on the entire project, as long as gofumpt is on the PATH.