mirror of
https://github.com/ivuorinen/tree-sitter-shellspec.git
synced 2026-02-05 02:47:57 +00:00
feat: implement complete tree-sitter-shellspec grammar with comprehensive testing
- Add full ShellSpec grammar extending tree-sitter-bash - Support all ShellSpec constructs: Describe, Context, It, hooks, utilities - Include Data block parsing with statements and argument styles - Add 61 comprehensive test cases covering real-world patterns - Implement optimized GitHub workflows with CI/CD automation - Configure complete development tooling (linting, formatting, pre-commit) - Add comprehensive documentation and contribution guidelines - Optimize grammar conflicts to zero warnings - Support editor integration for Neovim, VS Code, Emacs Breaking Changes: - Initial release, no previous API to break BREAKING CHANGE: Initial implementation of tree-sitter-shellspec grammar # Conflicts: # .github/workflows/codeql.yml # .github/workflows/pr-lint.yml # .pre-commit-config.yaml # Conflicts: # .github/workflows/pr-lint.yml # Conflicts: # .github/workflows/pr-lint.yml
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README.md
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# tree-sitter-shellspec
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[](https://github.com/ivuorinen/tree-sitter-shellspec)
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[](https://github.com/ivuorinen/tree-sitter-shellspec)
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[](https://tree-sitter.github.io/)
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A comprehensive [Tree-sitter](https://tree-sitter.github.io/) grammar for [ShellSpec](https://shellspec.info/) - a BDD (Behavior Driven Development) testing framework for POSIX shell scripts.
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## Overview
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This grammar extends the [tree-sitter-bash](https://github.com/tree-sitter/tree-sitter-bash) grammar to provide complete parsing support for ShellSpec's BDD constructs.
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It enables syntax highlighting, code navigation, and tooling integration for ShellSpec test files.
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### Features
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- **Complete ShellSpec syntax support** - All block types, hooks, and utility constructs
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- **Real-world compatibility** - Tested against official ShellSpec examples
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- **Bash integration** - Seamlessly handles mixed ShellSpec/bash code
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- **Production ready** - 100% test coverage with 59 comprehensive test cases
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- **Editor support** - Works with any Tree-sitter compatible editor
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## Installation
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### Using npm
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```bash
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npm install @ivuorinen/tree-sitter-shellspec
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```
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### Manual Installation
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```bash
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git clone https://github.com/ivuorinen/tree-sitter-shellspec.git
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cd tree-sitter-shellspec
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npm install
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npm run build
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```
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## Grammar Support
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### Block Types
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#### Describe Blocks (Example Groups)
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```shellspec
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Describe 'Calculator functions'
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# Test cases go here
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End
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# Variants: Describe, fDescribe (focused), xDescribe (skipped)
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```
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#### Context Blocks (Sub-groups)
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```shellspec
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Context 'when input is valid'
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# Specific test scenarios
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End
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# Variants: Context, ExampleGroup, fContext, xContext
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```
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#### Example Blocks (Test Cases)
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```shellspec
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It 'should calculate sum correctly'
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When call add 2 3
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The output should eq 5
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End
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# Variants: It, Example, Specify, fIt, fExample, fSpecify, xIt, xExample, xSpecify
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```
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### Hook Types
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#### Block-Style Hooks
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```shellspec
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BeforeEach 'setup test environment'
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# Setup code here
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End
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AfterEach 'cleanup after test'
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# Cleanup code here
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End
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# Available: BeforeEach, AfterEach, BeforeAll, AfterAll, BeforeCall, AfterCall, BeforeRun, AfterRun
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```
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#### Statement-Style Hooks
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```shellspec
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Before 'setup_function'
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Before 'setup1' 'setup2' # Multiple functions
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After 'cleanup_function'
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Before 'variable=value' # Inline code
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```
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### Utility Blocks
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#### Data Blocks
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```shellspec
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Data 'test input data'
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item1 value1
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item2 value2
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End
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```
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#### Parameters
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```shellspec
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Parameters
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'param1'
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'param2'
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End
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```
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#### Test Control
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```shellspec
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Skip 'not implemented yet'
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# Skipped test code
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End
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Pending 'work in progress'
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# Code that should fail for now
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End
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Todo 'implement feature X' # Note without block
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```
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### Directives
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#### Include External Scripts
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```shellspec
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Include ./helper_functions.sh
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Include ./custom_matchers.sh
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```
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#### Conditional Skip
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```shellspec
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Skip if "platform not supported" [ "$PLATFORM" != "linux" ]
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Skip if "command not available" ! command -v docker
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```
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## Usage Examples
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### Basic Test Structure
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```shellspec
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#!/usr/bin/env shellspec
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Describe 'My Application'
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Include ./lib/my_app.sh
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Before 'setup_test_env'
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After 'cleanup_test_env'
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Context 'when user provides valid input'
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It 'processes input correctly'
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When call process_input "valid data"
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The status should be success
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The output should include "Processing complete"
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End
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It 'returns expected format'
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When call format_output "test"
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The output should match pattern "^Result: .*"
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End
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End
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Context 'when user provides invalid input'
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Skip if "validation not implemented" ! grep -q "validate" lib/my_app.sh
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It 'handles errors gracefully'
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When call process_input ""
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The status should be failure
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The stderr should include "Error: Invalid input"
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End
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End
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End
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```
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### Top-Level Examples (No Describe Required)
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```shellspec
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It 'can run without describe block'
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When call echo "hello"
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The output should eq "hello"
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End
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```
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### Complex Hook Chains
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```shellspec
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Describe 'Complex setup scenario'
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Before 'init_database' 'load_fixtures' 'start_services'
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After 'stop_services' 'cleanup_database'
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BeforeEach 'reset test state'
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test_counter=0
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temp_dir=$(mktemp -d)
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End
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AfterEach 'verify cleanup'
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[ "$test_counter" -gt 0 ]
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rm -rf "$temp_dir"
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End
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It 'runs with full setup chain'
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When call complex_operation
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The status should be success
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End
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End
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```
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## Development
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### Prerequisites
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- [Node.js](https://nodejs.org/) (v16 or later)
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- [Tree-sitter CLI](https://github.com/tree-sitter/tree-sitter/tree/master/cli) (`npm install -g tree-sitter-cli`)
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### Setup
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```bash
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git clone https://github.com/ivuorinen/tree-sitter-shellspec.git
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cd tree-sitter-shellspec
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npm install
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```
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### Available Scripts
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```bash
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# Generate parser from grammar
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npm run generate
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# Run test suite (59 comprehensive tests)
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npm test
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# Build the parser
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npm run build
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# Development workflow
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npm run dev # Generate + test
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npm run dev:watch # Watch mode for development
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# Linting and formatting
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npm run lint # Check code style
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npm run lint:fix # Auto-fix style issues
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npm run format # Format code
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# Utilities
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npm run clean # Clean generated files
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npm run rebuild # Clean + generate + build
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```
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### Testing
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The grammar includes comprehensive test coverage:
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- **59 test cases** covering all ShellSpec constructs
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- **Real-world patterns** from official ShellSpec repository
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- **Edge cases** and complex nesting scenarios
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- **Mixed content** (ShellSpec + bash code)
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```bash
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# Run all tests
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npm test
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# Test specific patterns
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tree-sitter test --filter "describe_blocks"
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tree-sitter test --filter "real_world_patterns"
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```
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### Grammar Structure
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The grammar extends tree-sitter-bash with these main rules:
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- `shellspec_describe_block` - Describe/fDescribe/xDescribe blocks
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- `shellspec_context_block` - Context/ExampleGroup blocks
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- `shellspec_it_block` - It/Example/Specify blocks
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- `shellspec_hook_block` - BeforeEach/AfterEach/etc. blocks
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- `shellspec_utility_block` - Data/Parameters/Skip/Pending/Todo blocks
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- `shellspec_hook_statement` - Before/After statements
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- `shellspec_directive_statement` - Include and conditional Skip
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## Editor Integration
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### Neovim (with nvim-treesitter)
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Add to your Tree-sitter config:
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```lua
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require'nvim-treesitter.configs'.setup {
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ensure_installed = { "bash", "shellspec" },
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highlight = {
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enable = true,
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},
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}
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```
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### VS Code
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Install a Tree-sitter extension that supports custom grammars, then add this grammar to your configuration.
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### Emacs (with tree-sitter-mode)
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Add to your configuration:
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```elisp
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(add-to-list 'tree-sitter-major-mode-language-alist '(sh-mode . shellspec))
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```
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## Contributing
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Contributions are welcome! Please see our [contributing guidelines](CONTRIBUTING.md) for details.
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### Areas for Contribution
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- **Enhanced Data block support** - Advanced syntax (`:raw`, `:expand`, `|` filters)
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- **Assertion parsing** - When/The statement structures
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- **Performance optimization** - Reduce parser conflicts
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- **Editor plugins** - Syntax highlighting themes
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- **Documentation** - Usage examples and tutorials
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### Reporting Issues
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Please report issues with:
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- ShellSpec code that doesn't parse correctly
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- Missing syntax highlighting
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- Performance problems
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- Documentation improvements
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## Related Projects
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- [ShellSpec](https://github.com/shellspec/shellspec) - The BDD testing framework
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- [tree-sitter-bash](https://github.com/tree-sitter/tree-sitter-bash) - Base bash grammar
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- [Tree-sitter](https://tree-sitter.github.io/) - Parser generator framework
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## License
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MIT License - see [LICENSE](LICENSE) file for details.
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## Acknowledgments
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- [ShellSpec project](https://shellspec.info/) for the excellent BDD testing framework
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- [Tree-sitter team](https://tree-sitter.github.io/) for the parsing framework
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- [tree-sitter-bash](https://github.com/tree-sitter/tree-sitter-bash) contributors for the base grammar
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---
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**Star this project** ⭐ if you find it useful for your ShellSpec development workflow!
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