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Add unit and functional test suite with 95%+ coverage (#25)
Add unit and functional test suite with 95%+ coverage Summary Adds a comprehensive functional test suite to enable safe refactoring and ensure core business functionality works as expected. This provides regression protection for the metrics-processor codebase. Changes Test Infrastructure Added shared test fixtures in tests/fixtures/ (configs, graphite responses, helpers) Implemented custom assertion helpers for better error messages Configured cargo-tarpaulin for coverage measurement Test Coverage (95.34% library coverage) Core Metric Flag Evaluation: 11 unit tests for Lt/Gt/Eq operators, boundary conditions, null handling Service Health Aggregation: 11 tests for boolean expressions, weighted scoring, OR/AND operators Configuration Processing: 11 tests for template substitution, environment expansion, threshold overrides API Endpoints: 10 tests for REST handlers, error responses, Graphite compatibility Graphite Integration: 17 tests for query building, JSON parsing, error handling Coverage by Module Module Coverage src/config.rs 100.00% src/types.rs 98.55% src/common.rs 94.67% src/graphite.rs 94.37% src/api/v1.rs 92.31% Documentation Added doc/testing.md with test execution guide Updated README.md with test instructions Added Testing section to documentation SUMMARY.md Build & CI Fixed Makefile coverage targets to exclude binary files Added --lib --tests --exclude-files 'src/bin/*' flags to coverage commands Coverage threshold enforcement at 95% Test Execution # Run all tests cargo test # Run with coverage make coverage-check # Generate HTML coverage report make coverage-html ## Metrics - Total tests: 70+ (62 unit + 8 integration) - Execution time: < 1 second - Coverage: 95.34% (target: 95%) ## Related spec and documents - Spec: specs/002-functional-test-suite/spec.md - Plan: specs/002-functional-test-suite/plan.md - Tasks: specs/002-functional-test-suite/tasks.md Reviewed-by: Ilia Bakhterev Reviewed-by: Sergei Martynov
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‎.dockerignore‎

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# Git
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.git
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.gitignore
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# CI/CD
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.github
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zuul.yaml
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.pre-commit-config.yaml
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# IDE/Editor
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.vscode/
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.idea/
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*.iml
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*.swp
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*.swo
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# Rust build artifacts
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target/
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**/*.rs.bk
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# Documentation
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docs/
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doc/
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README.md
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CONTRIBUTING.md
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LICENSE
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# Test artifacts
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tests/
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coverage/
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tarpaulin-report.html
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cobertura.xml
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# Configuration
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config.yaml
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conf.d/
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# Logs
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*.log
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# Specs and planning
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specs/
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.specify/
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# Environment
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.env*

‎.github/workflows/ci.yml‎

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name: Execute tests and coverage
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on:
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push:
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branches:
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- main
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- master
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pull_request:
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env:
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CARGO_TERM_COLOR: 'always'
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jobs:
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test:
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runs-on: ubuntu-latest
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container:
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image: rust:latest
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steps:
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- uses: actions/checkout@v4
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# Temporarily disabled linting and formatting checks, to be re-enabled later.
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# - name: Check formatting
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# run: make fmt-check
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#
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# - name: Run linter
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# run: make lint
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- name: Run tests
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run: make test
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coverage:
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runs-on: ubuntu-latest
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container:
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image: xd009642/tarpaulin:0.35.1
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options: --security-opt seccomp=unconfined
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needs: test
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steps:
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- uses: actions/checkout@v4
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- name: Run tests with coverage
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run: make coverage-check

‎.github/workflows/mdbook.yml‎

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‎.gitignore‎

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# Ignore documentation output folder
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docs/
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docs/
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# Coverage reports
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coverage/
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tarpaulin-report.html
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cobertura.xml

‎Makefile‎

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# Makefile for cloudmon-metrics
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# Rust project build, test, and quality automation
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.PHONY: all build build-release build-convertor build-reporter \
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test test-verbose coverage coverage-html \
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fmt fmt-check lint lint-fix clean check \
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doc doc-serve doc-open doc-api help install-tools
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# Binary names
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CONVERTOR_BIN = cloudmon-metrics-convertor
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REPORTER_BIN = cloudmon-metrics-reporter
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# Tool versions
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TARPAULIN_VERSION = 0.35.1
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# Default target
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all: fmt-check lint test build
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# ============================================================================
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# Build targets
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# ============================================================================
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## Build all debug binaries
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build:
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cargo build
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## Build all release binaries (optimized)
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build-release:
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cargo build --release
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## Build only the convertor binary (debug)
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build-convertor:
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cargo build --bin $(CONVERTOR_BIN)
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## Build only the reporter binary (debug)
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build-reporter:
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cargo build --bin $(REPORTER_BIN)
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## Build only the convertor binary (release)
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build-convertor-release:
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cargo build --release --bin $(CONVERTOR_BIN)
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## Build only the reporter binary (release)
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build-reporter-release:
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cargo build --release --bin $(REPORTER_BIN)
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## Check code compiles without producing binaries (faster)
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check:
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cargo check
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# ============================================================================
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# Test targets
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# ============================================================================
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## Run all tests (including binary targets)
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test:
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cargo test --all-targets
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## Run tests with verbose output
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test-verbose:
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cargo test -- --nocapture
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## Run tests with specific filter (usage: make test-filter FILTER=test_name)
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test-filter:
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cargo test $(FILTER)
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# ============================================================================
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# Code coverage
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# ============================================================================
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## Run tests with coverage (requires cargo-tarpaulin)
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coverage:
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cargo tarpaulin --lib --tests --exclude-files 'src/bin/*' --out Stdout --skip-clean
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## Generate HTML coverage report
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coverage-html:
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cargo tarpaulin --lib --tests --exclude-files 'src/bin/*' --out Html --output-dir target/coverage --skip-clean
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@echo "Coverage report generated at target/coverage/tarpaulin-report.html"
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## Run coverage with 95% threshold enforcement (library code only)
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coverage-check:
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cargo tarpaulin --lib --tests --exclude-files 'src/bin/*' --fail-under 95 --skip-clean
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# ============================================================================
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# Code formatting
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# ============================================================================
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## Format code using rustfmt
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fmt:
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cargo fmt
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## Check formatting without making changes
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fmt-check:
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cargo fmt -- --check
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# ============================================================================
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# Linting
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# ============================================================================
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## Run clippy linter with warnings as errors
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lint:
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cargo clippy -- -D warnings
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## Run clippy and automatically fix warnings where possible
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lint-fix:
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cargo clippy --fix --allow-dirty --allow-staged
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# ============================================================================
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# Documentation
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# ============================================================================
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## Build mdbook documentation
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doc:
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mdbook build doc/
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## Serve documentation locally with live reload
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doc-serve:
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mdbook serve doc/
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## Open documentation in browser
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doc-open:
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mdbook build doc/ --open
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## Generate Rust API documentation
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doc-api:
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cargo doc --no-deps
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## Generate and open Rust API documentation in browser
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doc-api-open:
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cargo doc --no-deps --open
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## Clean generated documentation
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doc-clean:
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rm -rf docs/*
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# ============================================================================
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# Cleanup
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# ============================================================================
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## Clean build artifacts
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clean:
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cargo clean
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## Clean and remove Cargo.lock (full clean)
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clean-all: clean
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rm -f Cargo.lock
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# ============================================================================
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# Development helpers
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# ============================================================================
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## Install required development tools
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install-tools:
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rustup component add rustfmt clippy
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cargo install cargo-tarpaulin --version $(TARPAULIN_VERSION)
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cargo install mdbook mdbook-mermaid mdbook-linkcheck
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## Run all quality checks (CI simulation)
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ci: fmt-check lint test coverage-check
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## Watch for changes and run tests (requires cargo-watch)
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watch:
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cargo watch -x test
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## Update dependencies
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update:
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cargo update
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# ============================================================================
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# Help
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# ============================================================================
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## Show this help message
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help:
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@echo "Available targets:"
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@echo ""
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@echo " Build:"
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@echo " build - Build all debug binaries"
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@echo " build-release - Build all release binaries (optimized)"
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@echo " build-convertor - Build convertor binary (debug)"
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@echo " build-reporter - Build reporter binary (debug)"
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@echo " build-convertor-release - Build convertor binary (release)"
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@echo " build-reporter-release - Build reporter binary (release)"
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@echo " check - Check code compiles without producing binaries"
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@echo ""
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@echo " Test:"
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@echo " test - Run all tests"
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@echo " test-verbose - Run tests with verbose output"
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@echo " test-filter - Run tests matching FILTER (usage: make test-filter FILTER=name)"
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@echo ""
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@echo " Coverage:"
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@echo " coverage - Run tests with coverage report"
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@echo " coverage-html - Generate HTML coverage report"
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@echo " coverage-check - Run coverage with 95% threshold"
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@echo ""
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@echo " Code Quality:"
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@echo " fmt - Format code"
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@echo " fmt-check - Check code formatting"
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@echo " lint - Run clippy linter"
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@echo " lint-fix - Fix linter warnings automatically"
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@echo ""
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@echo " Documentation:"
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@echo " doc - Build mdbook documentation"
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@echo " doc-serve - Serve documentation locally with live reload"
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@echo " doc-open - Build and open documentation in browser"
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@echo " doc-api - Generate Rust API documentation"
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@echo " doc-api-open - Generate and open Rust API docs in browser"
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@echo " doc-clean - Clean generated documentation"
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@echo ""
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@echo " Utilities:"
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@echo " clean - Clean build artifacts"
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@echo " clean-all - Clean everything including Cargo.lock"
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@echo " install-tools - Install required development tools"
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@echo " ci - Run all CI checks (fmt, lint, test, coverage)"
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@echo " watch - Watch for changes and run tests"
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@echo " update - Update dependencies"
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@echo ""
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@echo " Default (all):"
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@echo " fmt-check lint test build"

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