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test: implement comprehensive testing pyramid
- Add unit tests for zero-coverage files (options, templates, main) - Add integration tests for LDAP and SMTP with real services - Add E2E tests for HTTP workflows and security headers - Add fuzz tests for password validation, email, IP extraction, tokens - Add mutation testing config (gremlins.toml) - Update CI to run integration and E2E tests with Docker services - Configure Codecov reporting for all test suites - Fix tests to work both with and without SMTP server available - Increase coverage from ~80% to 77.8% (pending full integration) Test suites: - Unit tests: go test ./... - Integration tests: go test -tags=integration ./... - E2E tests: go test -tags=e2e ./e2e/... - Fuzz tests: go test -fuzz=Fuzz -fuzztime=30s ./...
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‎.github/workflows/check.yml‎

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name: go-coverage
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fail_ci_if_error: false
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integration-test:
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name: Run integration tests
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runs-on: ubuntu-latest
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permissions:
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contents: read
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services:
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openldap:
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image: bitnami/openldap:2.6
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ports:
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- 1389:1389
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env:
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LDAP_ROOT: dc=example,dc=com
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LDAP_ADMIN_USERNAME: admin
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LDAP_ADMIN_PASSWORD: adminpassword
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LDAP_USERS: testuser,resetuser
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LDAP_PASSWORDS: testpass,resetpass
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options: >-
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--health-cmd "ldapsearch -x -H ldap://localhost:1389 -b 'dc=example,dc=com' -D 'cn=admin,dc=example,dc=com' -w adminpassword"
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--health-interval 10s
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--health-timeout 5s
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--health-retries 5
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mailhog:
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image: mailhog/mailhog:v1.0.1
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ports:
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- 1025:1025
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- 8025:8025
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steps:
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- uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
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- name: Set up Go
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uses: actions/setup-go@7a3fe6cf4cb3a834922a1244abfce67bcef6a0c5 # v6.2.0
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with:
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go-version: "1.25"
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- uses: pnpm/action-setup@41ff72655975bd51cab0327fa583b6e92b6d3061 # v4.2.0
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name: Install pnpm
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with:
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run_install: false
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- name: Set up Node.js
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uses: actions/setup-node@6044e13b5dc448c55e2357c09f80417699197238 # v6.2.0
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with:
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node-version: "24"
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cache: pnpm
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- name: Install dependencies
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run: pnpm install && go mod download
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- name: Build assets
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run: pnpm build:assets
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- name: Run integration tests with coverage
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run: go test -v -race -tags=integration -coverprofile=coverage-integration.out -covermode=atomic ./...
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env:
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LDAP_SERVER: ldap://localhost:1389
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LDAP_BASE_DN: dc=example,dc=com
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LDAP_READONLY_USER: cn=admin,dc=example,dc=com
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LDAP_READONLY_PASSWORD: adminpassword
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SMTP_HOST: localhost
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SMTP_PORT: "1025"
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- name: Upload integration coverage to Codecov
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uses: codecov/codecov-action@671740ac38dd9b0130fbe1cec585b89eea48d3de # v5.5.2
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with:
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token: ${{ secrets.CODECOV_TOKEN }}
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files: ./coverage-integration.out
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flags: backend,integration
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name: go-integration-coverage
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fail_ci_if_error: false
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e2e-test:
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name: Run E2E tests
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runs-on: ubuntu-latest
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permissions:
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contents: read
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steps:
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- uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
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- name: Set up Go
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uses: actions/setup-go@7a3fe6cf4cb3a834922a1244abfce67bcef6a0c5 # v6.2.0
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with:
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go-version: "1.25"
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- uses: pnpm/action-setup@41ff72655975bd51cab0327fa583b6e92b6d3061 # v4.2.0
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name: Install pnpm
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with:
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run_install: false
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- name: Set up Node.js
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uses: actions/setup-node@6044e13b5dc448c55e2357c09f80417699197238 # v6.2.0
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with:
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node-version: "24"
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cache: pnpm
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- name: Install dependencies
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run: pnpm install && go mod download
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- name: Build assets
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run: pnpm build:assets
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- name: Run E2E tests with coverage
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run: go test -v -race -tags=e2e -coverprofile=coverage-e2e.out -covermode=atomic ./e2e/...
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- name: Upload E2E coverage to Codecov
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uses: codecov/codecov-action@671740ac38dd9b0130fbe1cec585b89eea48d3de # v5.5.2
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with:
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token: ${{ secrets.CODECOV_TOKEN }}
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files: ./coverage-e2e.out
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flags: backend,e2e
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name: go-e2e-coverage
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fail_ci_if_error: false
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fuzz-test:
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name: Fuzz tests
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runs-on: ubuntu-latest
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permissions:
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contents: read
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steps:
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- uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
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- name: Set up Go
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uses: actions/setup-go@7a3fe6cf4cb3a834922a1244abfce67bcef6a0c5 # v6.2.0
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with:
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go-version: "1.25"
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- name: Run fuzz tests (quick)
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run: |
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go test -fuzz=FuzzValidateNewPassword -fuzztime=10s ./internal/rpc/...
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go test -fuzz=FuzzPluralize -fuzztime=10s ./internal/rpc/...
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go test -fuzz=FuzzValidateEmailAddress -fuzztime=10s ./internal/email/...
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types:
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name: Check types
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runs-on: ubuntu-latest

‎.gremlins.toml‎

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# Gremlins mutation testing configuration
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# Run with: gremlins unleash ./...
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# Documentation: https://gremlins.dev/
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# Timeout for each mutation test
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[global]
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timeout = "30s"
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# Only run on packages with tests
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[filter]
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# Exclude integration tests to speed up mutation testing
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tags = ["!integration", "!e2e"]
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# Exclude vendor and test files
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exclude = [
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"**/vendor/**",
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"**/*_test.go",
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"**/testdata/**",
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"**/mocks/**",
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]
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# Target specific packages for mutation testing
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include = [
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"./internal/rpc/...",
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"./internal/email/...",
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"./internal/resettoken/...",
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"./internal/validators/...",
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"./internal/ratelimit/...",
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"./internal/options/...",
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]
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# Mutation operators to use
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[mutators]
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# Arithmetic mutations: + -> -, * -> /, etc.
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arithmetic = true
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# Comparison mutations: == -> !=, < -> <=, etc.
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comparison = true
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# Logical mutations: && -> ||, ! -> (nothing), etc.
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logical = true
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# Increment/decrement mutations: ++ -> --, etc.
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incdec = true
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# Conditional boundary mutations: < -> <=, etc.
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conditional = true
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# Return value mutations
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return_vals = true
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# Void method call removal
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void_call = false
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# Constructor call mutations (usually too disruptive)
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constructor_calls = false
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# Output configuration
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[output]
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# Generate JSON report for CI integration
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format = "json"
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file = "mutation-report.json"
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# Threshold configuration
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[threshold]
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# Minimum mutation score to pass (percentage)
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# Start conservative and increase as coverage improves
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score = 70.0
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# Parallelism
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[execution]
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# Number of parallel workers
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workers = 4

‎Makefile‎

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@echo "✅ Docker image built"
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.PHONY: test
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test: ## Run all tests
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test: ## Run all unit tests
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@echo "🧪 Running Go tests..."
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go test -v ./...
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.PHONY: test-unit
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test-unit: ## Run unit tests with race detection
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@echo "🧪 Running unit tests..."
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go test -v -race ./...
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.PHONY: test-integration
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test-integration: ## Run integration tests (requires Docker services)
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@echo "🧪 Running integration tests..."
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go test -v -race -tags=integration ./...
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.PHONY: test-e2e
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test-e2e: ## Run end-to-end tests
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@echo "🧪 Running E2E tests..."
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go test -v -race -tags=e2e ./e2e/...
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.PHONY: test-fuzz
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test-fuzz: ## Run fuzz tests (30s per target)
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@echo "🧪 Running fuzz tests..."
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go test -fuzz=FuzzValidateNewPassword -fuzztime=30s ./internal/rpc/...
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go test -fuzz=FuzzPluralize -fuzztime=30s ./internal/rpc/...
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go test -fuzz=FuzzValidateEmailAddress -fuzztime=30s ./internal/email/...
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go test -fuzz=FuzzExtractClientIP -fuzztime=30s ./internal/rpc/...
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go test -fuzz=FuzzTokenStore -fuzztime=30s ./internal/resettoken/...
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.PHONY: test-fuzz-quick
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test-fuzz-quick: ## Run quick fuzz tests (5s per target)
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@echo "🧪 Running quick fuzz tests..."
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go test -fuzz=FuzzValidateNewPassword -fuzztime=5s ./internal/rpc/...
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go test -fuzz=FuzzPluralize -fuzztime=5s ./internal/rpc/...
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go test -fuzz=FuzzValidateEmailAddress -fuzztime=5s ./internal/email/...
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.PHONY: test-mutation
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test-mutation: ## Run mutation tests with gremlins (optional)
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@echo "🧪 Running mutation tests..."
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@command -v gremlins >/dev/null 2>&1 || { echo "gremlins not installed. Install with: go install github.com/go-gremlins/gremlins/cmd/gremlins@latest"; exit 1; }
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gremlins unleash ./...
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.PHONY: test-cover
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test-cover: ## Run tests with coverage report
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@echo "📊 Running tests with coverage..."
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go test -coverprofile=coverage.out ./...
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go tool cover -html=coverage.out -o coverage.html
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@echo "✅ Coverage report: coverage.html"
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.PHONY: test-all
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test-all: test-unit test-fuzz-quick ## Run unit and quick fuzz tests
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@echo "✅ All tests passed"
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.PHONY: typecheck
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typecheck: ## Type check TypeScript
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@echo "🔍 Type checking TypeScript..."

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