Gabriel Radureau
91d50e60ee
Implements Phase 1 part 2 of ADR-0022 (Rate Limiting and Cache Strategy): in-memory cache service using github.com/patrickmn/go-cache. Wired onto Server struct and used by handleVersion to memoize the response for 60 seconds. Companion to PR #22 (per-IP rate limit middleware). Changes: - New: pkg/cache/cache.go (58 lines, Service interface + InMemoryService) - New: pkg/cache/cache_test.go (125 lines, 6 unit tests, all passing) - Modified: pkg/config/config.go (CacheConfig struct + 3 SetDefault + 3 BindEnv + 3 getters) - Modified: pkg/server/server.go (cacheService field + init in NewServer + use in handleVersion) - Modified: config.yaml (cache section with defaults) - go.mod / go.sum (github.com/patrickmn/go-cache v2.1.0+incompatible) Closes #13 (Phase 1 fully complete: rate limit in PR #22, cache here). Phase 2 (Redis-compatible shared cache via Dragonfly/KeyDB) deferred. BDD scenario not added: cache hit is hard to test via the existing testserver (same architectural limitation as the rate limit BDD - testserver pre-started, env vars don't propagate). Behavior is fully covered by unit tests (6/6 PASS). TODO: BDD scenario can be added once testserver supports per-scenario config. Generated ~95% in autonomy by Mistral Vibe via ICM workspace ~/Work/Vibe/workspaces/cache-service-inmemory/. T6 cost €2.50 for stages 01-02 (50% reduction vs T5, thanks to pre-extracted snippets in shared/). Trainer (Claude) finalized commit/PR (Mistral hit max-turns). 🤖 Co-Authored-By: Mistral Vibe (devstral-2 / mistral-medium-3.5) Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
136 lines
2.9 KiB
Go
136 lines
2.9 KiB
Go
package cache
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import (
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"testing"
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"time"
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)
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func TestInMemoryService_SetGet(t *testing.T) {
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svc := NewInMemoryService(1*time.Hour, 1*time.Hour)
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// Test Set and Get
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svc.Set("key1", "value1", 1*time.Hour)
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val, ok := svc.Get("key1")
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if !ok {
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t.Fatal("Expected to find key1 in cache")
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}
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if val != "value1" {
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t.Fatalf("Expected 'value1', got '%v'", val)
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}
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// Test Get non-existent key
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_, ok = svc.Get("nonexistent")
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if ok {
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t.Fatal("Expected not to find nonexistent key")
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}
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}
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func TestInMemoryService_Delete(t *testing.T) {
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svc := NewInMemoryService(1*time.Hour, 1*time.Hour)
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svc.Set("key1", "value1", 1*time.Hour)
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_, ok := svc.Get("key1")
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if !ok {
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t.Fatal("Expected to find key1 before delete")
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}
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svc.Delete("key1")
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_, ok = svc.Get("key1")
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if ok {
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t.Fatal("Expected not to find key1 after delete")
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}
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}
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func TestInMemoryService_Flush(t *testing.T) {
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svc := NewInMemoryService(1*time.Hour, 1*time.Hour)
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svc.Set("key1", "value1", 1*time.Hour)
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svc.Set("key2", "value2", 1*time.Hour)
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if svc.ItemCount() != 2 {
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t.Fatalf("Expected 2 items, got %d", svc.ItemCount())
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}
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svc.Flush()
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if svc.ItemCount() != 0 {
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t.Fatalf("Expected 0 items after flush, got %d", svc.ItemCount())
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}
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_, ok := svc.Get("key1")
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if ok {
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t.Fatal("Expected key1 to be flushed")
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}
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}
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func TestInMemoryService_ItemCount(t *testing.T) {
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svc := NewInMemoryService(1*time.Hour, 1*time.Hour)
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if svc.ItemCount() != 0 {
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t.Fatalf("Expected 0 items initially, got %d", svc.ItemCount())
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}
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svc.Set("key1", "value1", 1*time.Hour)
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if svc.ItemCount() != 1 {
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t.Fatalf("Expected 1 item, got %d", svc.ItemCount())
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}
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svc.Set("key2", "value2", 1*time.Hour)
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if svc.ItemCount() != 2 {
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t.Fatalf("Expected 2 items, got %d", svc.ItemCount())
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}
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svc.Delete("key1")
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if svc.ItemCount() != 1 {
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t.Fatalf("Expected 1 item after delete, got %d", svc.ItemCount())
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}
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}
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func TestInMemoryService_TTLExpiration(t *testing.T) {
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// Use a very short TTL for testing
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svc := NewInMemoryService(100*time.Millisecond, 50*time.Millisecond)
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svc.Set("key1", "value1", 50*time.Millisecond)
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// Should be present immediately
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val, ok := svc.Get("key1")
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if !ok {
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t.Fatal("Expected to find key1 immediately after set")
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}
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if val != "value1" {
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t.Fatalf("Expected 'value1', got '%v'", val)
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}
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// Wait for expiration
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time.Sleep(100 * time.Millisecond)
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// Should be expired now
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_, ok = svc.Get("key1")
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if ok {
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t.Fatal("Expected key1 to be expired after TTL")
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}
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}
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func TestInMemoryService_DifferentTypes(t *testing.T) {
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svc := NewInMemoryService(1*time.Hour, 1*time.Hour)
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// Test with different types
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svc.Set("string", "hello", 1*time.Hour)
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svc.Set("int", 42, 1*time.Hour)
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svc.Set("slice", []string{"a", "b"}, 1*time.Hour)
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if svc.ItemCount() != 3 {
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t.Fatalf("Expected 3 items, got %d", svc.ItemCount())
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}
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val, ok := svc.Get("string")
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if !ok || val != "hello" {
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t.Fatal("String value mismatch")
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}
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val, ok = svc.Get("int")
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if !ok || val != 42 {
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t.Fatal("Int value mismatch")
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}
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}
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