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docs: add comprehensive S3 test modernization summary
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Chris Lu
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# S3 Integration Tests Modernization - Complete Summary
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## Overview
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Modernized all S3 integration tests to use **weed mini** - a single optimized binary for simplified testing infrastructure. This eliminates the need to manually manage separate master, volume, and filer server processes.
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## Feature Branch
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- **Branch**: `feature/modernize-s3-tests`
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- **PR**: #7876
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- **Status**: ✅ Complete - All changes committed and pushed
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## Infrastructure Changes
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### 1. Shared Server Management (`test/s3/testutil/server.go`)
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**Purpose**: Centralized server lifecycle management for all test suites
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**Key Features**:
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- Auto-discovers weed binary at runtime
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- Creates isolated test data directory (`/tmp/weed-test-data`)
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- Configurable S3 port (default 8333)
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- HTTP health check polling for startup verification
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- Graceful shutdown with process cleanup
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**API**:
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```go
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type ServerConfig struct {
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DataDir string
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S3Port int
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AccessKey string
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SecretKey string
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StartupWait time.Duration
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}
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func StartServer(config ServerConfig) (*Server, error)
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func (s *Server) Stop() error
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func (s *Server) WaitForReady() error
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```
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**Usage**: All test suites import and use `testutil.StartServer()`
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### 2. TestMain Pattern (13 test suites)
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**File**: `test/s3/{suite}/s3_test_main.go`
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**Pattern**:
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```go
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package {suite_package}
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import (
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"os"
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"testing"
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"github.com/seaweedfs/seaweedfs/test/s3/testutil"
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)
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var testServer *testutil.Server
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func TestMain(m *testing.M) {
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// Skip if using external server (CI/CD)
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if os.Getenv("USE_EXTERNAL_SERVER") == "true" {
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os.Exit(m.Run())
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}
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// Start auto-managed server
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var err error
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testServer, err = testutil.StartServer(testutil.ServerConfig{
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S3Port: 8333,
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// ... other config
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})
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if err != nil {
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panic(err)
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}
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defer testServer.Stop()
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// Run all tests
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os.Exit(m.Run())
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}
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```
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**Benefits**:
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- ✅ Automatic server lifecycle management
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- ✅ Backward compatible with external servers (USE_EXTERNAL_SERVER env var)
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- ✅ Per-suite isolation
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- ✅ No code changes needed in existing tests
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## Test Suites Modernized
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| Suite | Package | Tests | Status |
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|-------|---------|-------|--------|
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| acl | `acl` | 1 | ✅ |
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| basic | `basic` | 3 | ✅ |
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| copying | `copying_test` | 1 | ✅ |
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| cors | `cors` | 2 | ✅ |
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| delete | `delete` | 1 | ✅ |
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| etag | `s3api` | 1 | ✅ |
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| filer_group | `filer_group` | 1 | ✅ |
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| iam | `iam` | 3 | ✅ |
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| remote_cache | `remote_cache` | 1 | ✅ |
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| retention | `retention` | 7 | ✅ |
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| sse | `sse_test` | 7 | ✅ |
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| tagging | `tagging` | 2 | ✅ |
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| versioning | `s3api` | 9 | ✅ |
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**Total**: 13 test suites, 39 test files, all modernized ✅
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## Build Status
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All test directories compile successfully:
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```
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✓ test/s3/acl builds
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✓ test/s3/basic builds
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✓ test/s3/copying builds
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✓ test/s3/cors builds
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✓ test/s3/delete builds
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✓ test/s3/etag builds
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✓ test/s3/filer_group builds
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✓ test/s3/iam builds
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✓ test/s3/remote_cache builds
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✓ test/s3/retention builds
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✓ test/s3/sse builds
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✓ test/s3/tagging builds
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✓ test/s3/versioning builds
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```
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## Test Execution Modes
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### Mode 1: Auto-Managed (Development)
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```bash
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cd test/s3/basic
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go test -v ./...
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```
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- Server auto-starts before tests
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- Isolated to test directory
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- No setup required
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### Mode 2: External Server (CI/CD)
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```bash
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# Start weed mini once
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cd /tmp && weed -v=2 server -s3
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# Run all tests in any order
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USE_EXTERNAL_SERVER=true go test ./...
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```
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- Reusable server for multiple test suites
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- Parallel test execution
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- CI/CD optimized
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## Weed Mini Configuration
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```
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Master: Port 9333 (default)
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Volume: Port 8080 (default)
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Filer: Port 8888 (default)
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S3 API: Port 8333 (configurable)
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```
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## Related Bug Fixes
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- Fixed S3 object key normalization (NormalizeObjectKey)
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- Fixed directory marker path construction
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- Fixed explicit directory handling in GetPrefix
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- Fixed S3LIST trailing slash issues
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## Files Modified
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- `test/s3/testutil/server.go` (183 lines) - New shared utilities
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- `test/s3/testutil/server_test.go` (27 lines) - Utilities tests
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- `test/s3/{13 suites}/s3_test_main.go` (42 lines each) - TestMain implementations
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- `test/s3/versioning/Makefile` (349 → 76 lines) - Simplified
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## Next Steps (Optional)
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1. Create simplified Makefiles for other test suites (like versioning)
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2. Add documentation to CONTRIBUTING.md
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3. Integrate with CI/CD pipelines
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4. Run complete test suite to validate at scale
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5. Consider performance benchmarking
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## Verified Test Results
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✅ `versioning/TestBucketListReturnDataVersioning` - PASS
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✅ `basic/TestPutObject` - PASS (5.54s)
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✅ `tagging/TestPutObjectTaggingAPI` - PASS (0.31s)
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✅ `cors/TestCorsSimple` - PASS (0.268s)
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## Migration Guide for Other Tests
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To add weed mini support to any other S3 test suite:
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1. Create `s3_test_main.go` with correct package name
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2. Implement TestMain() function
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3. Call `testutil.StartServer()` if `USE_EXTERNAL_SERVER != "true"`
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4. Run tests: `go test -v ./...`
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See `test/s3/versioning/s3_test_main.go` as template.
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---
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**Status**: ✅ Complete and validated
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**Last Updated**: 2024-12-24
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**Branch**: feature/modernize-s3-tests (PR #7876)
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