284 lines
8.1 KiB
Go
284 lines
8.1 KiB
Go
package config
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import (
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"os"
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"path/filepath"
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"strings"
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"sync"
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"testing"
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"github.com/fsnotify/fsnotify"
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"github.com/spf13/viper"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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// --- ConfigReloader Tests ---
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func TestNewConfigReloader(t *testing.T) {
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cfg := validTestConfig()
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r, err := NewConfigReloader(cfg, "test")
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require.NoError(t, err)
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require.NotNil(t, r)
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assert.Equal(t, cfg, r.Config())
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r.Stop()
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}
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func TestConfigReloader_ConfigThreadSafe(t *testing.T) {
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cfg := validTestConfig()
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r, err := NewConfigReloader(cfg, "test")
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require.NoError(t, err)
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// Concurrent reads should be safe
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var wg sync.WaitGroup
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for i := 0; i < 10; i++ {
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wg.Add(1)
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go func() {
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defer wg.Done()
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c := r.Config()
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assert.NotNil(t, c)
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}()
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}
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wg.Wait()
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r.Stop()
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}
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func TestConfigReloader_OnChangeCallback(t *testing.T) {
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cfg := validTestConfig()
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r, err := NewConfigReloader(cfg, "test")
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require.NoError(t, err)
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// Register callback — verify it's registered
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callbackCount := 0
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r.OnChange(func(old, new *Config) {
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callbackCount++
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})
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assert.Len(t, r.onChange, 1)
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r.Stop()
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}
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func TestConfigReloader_ReloadableFieldsList(t *testing.T) {
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// Verify ReloadableFields contains expected entries
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expectedFields := []string{
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"log.level",
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"log.format",
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"rate_limit.enabled",
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"rate_limit.requests_per_minute",
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"rate_limit.window_seconds",
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"captain.enabled",
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"captain.llm_model",
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"captain.max_tokens",
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"captain.temperature",
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"worker.concurrency",
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"worker.redis_block_timeout_s",
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"worker.redis_sweep_interval_s",
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"server.cors.allowed_origins",
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}
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assert.ElementsMatch(t, expectedFields, ReloadableFields)
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}
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func TestConfigReloader_ApplyReloadableFields(t *testing.T) {
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oldCfg := validTestConfig()
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oldCfg.Log.Level = "debug"
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oldCfg.RateLimit.RequestsPerMinute = 100
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oldCfg.Captain.Enabled = false
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oldCfg.Worker.Concurrency = 4
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oldCfg.Database.Host = "original-host" // immutable field
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newCfg := validTestConfig()
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newCfg.Log.Level = "info"
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newCfg.RateLimit.RequestsPerMinute = 200
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newCfg.Captain.Enabled = true
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newCfg.Worker.Concurrency = 8
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newCfg.Database.Host = "changed-host" // should NOT be applied
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r := &ConfigReloader{cfg: oldCfg}
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r.applyReloadableFields(newCfg)
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// Reloadable fields should be updated
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assert.Equal(t, "info", r.cfg.Log.Level)
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assert.Equal(t, 200, r.cfg.RateLimit.RequestsPerMinute)
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assert.Equal(t, true, r.cfg.Captain.Enabled)
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assert.Equal(t, 8, r.cfg.Worker.Concurrency)
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// Immutable fields should NOT be updated
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assert.Equal(t, "original-host", r.cfg.Database.Host)
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}
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func TestConfigReloader_Stop(t *testing.T) {
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cfg := validTestConfig()
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r, err := NewConfigReloader(cfg, "test")
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require.NoError(t, err)
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r.Stop()
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// Stop should close stopCh — calling Stop again should not panic
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r.Stop()
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}
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func TestConfigReloader_HandleConfigChange_InvalidConfig(t *testing.T) {
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cfg := validTestConfig()
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r := &ConfigReloader{
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v: viper.New(),
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cfg: cfg,
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}
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// Simulate a config change event with an event name
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event := fsnotify.Event{Name: "config.yaml", Op: fsnotify.Write}
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r.handleConfigChange(event)
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// Since viper.Unmarshal with a fresh viper returns zero-valued config,
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// validation should fail and old config should be preserved
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assert.Equal(t, "info", r.cfg.Log.Level) // unchanged
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}
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// --- LoadWithEnv Tests ---
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func TestLoadWithEnv_ValidConfig(t *testing.T) {
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// Create a temporary config file
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tmpDir := t.TempDir()
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configContent := `
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server:
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host: "0.0.0.0"
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port: 3000
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mode: "debug"
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database:
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host: "localhost"
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port: 5432
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user: "gochat"
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password: "secret"
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dbname: "gochat_db"
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sslmode: "disable"
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redis:
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url: "redis://localhost:6379"
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jwt:
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secret: "test-secret-key-min-32-chars!!"
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expiry_hours: 72
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log:
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level: "debug"
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format: "json"
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rate_limit:
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enabled: true
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requests_per_minute: 100
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window_seconds: 60
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worker:
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concurrency: 4
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captain:
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enabled: false
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`
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err := os.WriteFile(filepath.Join(tmpDir, "config.yaml"), []byte(configContent), 0644)
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require.NoError(t, err)
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// Load config from temp directory
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v := viper.New()
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v.SetConfigName("config")
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v.SetConfigType("yaml")
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v.AddConfigPath(tmpDir)
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require.NoError(t, v.ReadInConfig())
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cfg, err := LoadWithEnv("")
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// LoadWithEnv uses global viper, so this test verifies the function exists
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// and doesn't panic. The actual file loading depends on test environment.
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if err != nil {
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t.Skip("LoadWithEnv requires config file in ./configs/ — skipping in CI")
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}
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assert.NotNil(t, cfg)
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}
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func TestLoadWithEnv_EnvironmentOverlay(t *testing.T) {
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// Verify that LoadWithEnv function exists and handles env parameter
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// Actual file-based test would need config files present
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t.Skip("Environment overlay requires config.{env}.yaml files — skipping in CI")
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}
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func TestLoadWithEnv_DotEnvFile(t *testing.T) {
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key, value, ok := parseDotEnvLine("GOCHAT_RATE_LIMIT_REQUESTS_PER_MINUTE=50 # requests per minute")
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require.True(t, ok)
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assert.Equal(t, "GOCHAT_RATE_LIMIT_REQUESTS_PER_MINUTE", key)
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assert.Equal(t, "50", value)
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_, _, ok = parseDotEnvLine("# Comment line should be ignored")
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assert.False(t, ok)
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}
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func TestLoadDotEnv_QuotedValues(t *testing.T) {
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_, value, ok := parseDotEnvLine(`GOCHAT_JWT_SECRET="my-super-secret-key-with-quotes"`)
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require.True(t, ok)
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assert.Equal(t, "my-super-secret-key-with-quotes", value)
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_, value, ok = parseDotEnvLine("GOCHAT_REDIS_URL='redis://special-host:6379'")
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require.True(t, ok)
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assert.Equal(t, "redis://special-host:6379", value)
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}
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// --- Env Binding Tests ---
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func TestEnvBindingsComplete(t *testing.T) {
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// Verify env prefix and key replacer work correctly
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v := viper.New()
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v.SetEnvPrefix("GOCHAT")
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v.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
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v.AutomaticEnv()
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// GOCHAT_DATABASE_HOST → viper key "database.host" via env prefix + replacer
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// The replacer replaces . with _ in viper keys when looking up env vars.
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// So viper key "database.host" → env key "DATABASE_HOST" → with prefix "GOCHAT_DATABASE_HOST"
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lowerKey := strings.ToLower(strings.ReplaceAll("database.host", ".", "_"))
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assert.Equal(t, "database_host", lowerKey)
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}
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// --- Defaults Tests ---
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func TestSetDefaults(t *testing.T) {
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v := viper.New()
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setDefaults(v)
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assert.Equal(t, "0.0.0.0", v.GetString("server.host"))
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assert.Equal(t, 3000, v.GetInt("server.port"))
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assert.Equal(t, "debug", v.GetString("server.mode"))
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assert.Equal(t, "localhost", v.GetString("database.host"))
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assert.Equal(t, 5432, v.GetInt("database.port"))
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assert.Equal(t, "disable", v.GetString("database.sslmode"))
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assert.Equal(t, "localhost", v.GetString("redis.host"))
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assert.Equal(t, 6379, v.GetInt("redis.port"))
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assert.Equal(t, "debug", v.GetString("log.level"))
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assert.Equal(t, "json", v.GetString("log.format"))
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assert.Equal(t, true, v.GetBool("rate_limit.enabled"))
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assert.Equal(t, 100, v.GetInt("rate_limit.requests_per_minute"))
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assert.Equal(t, 60, v.GetInt("rate_limit.window_seconds"))
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assert.Equal(t, 4, v.GetInt("worker.concurrency"))
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}
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func TestApplyZeroDefaults(t *testing.T) {
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cfg := Config{} // all zeros
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applyZeroDefaults(&cfg)
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assert.Equal(t, 100, cfg.RateLimit.RequestsPerMinute)
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assert.Equal(t, 60, cfg.RateLimit.WindowSeconds)
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assert.Equal(t, 4, cfg.Worker.Concurrency)
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// Non-zero values should not be overwritten
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cfg2 := Config{
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RateLimit: RateLimitConfig{RequestsPerMinute: 200, WindowSeconds: 30},
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Worker: WorkerConfig{Concurrency: 16},
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}
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applyZeroDefaults(&cfg2)
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assert.Equal(t, 200, cfg2.RateLimit.RequestsPerMinute)
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assert.Equal(t, 30, cfg2.RateLimit.WindowSeconds)
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assert.Equal(t, 16, cfg2.Worker.Concurrency)
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}
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// --- Helper ---
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func validTestConfig() *Config {
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return &Config{
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Server: ServerConfig{Host: "localhost", Port: 8080, Mode: "debug"},
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Database: DatabaseConfig{Host: "localhost", Port: 5432, User: "gochat", Password: "secret", Name: "gochat_db", DBName: "gochat_db"},
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Redis: RedisConfig{URL: "redis://localhost:6379"},
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JWT: JWTConfig{Secret: "test-secret-key-min-32-chars!!", ExpiryHours: 24, RefreshExpiryHours: 168},
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Log: LogConfig{Level: "info", Format: "json"},
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Captain: CaptainConfig{Enabled: false},
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Worker: WorkerConfig{Concurrency: 4},
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OAuth: OAuthConfig{},
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RateLimit: RateLimitConfig{Enabled: true, RequestsPerMinute: 100, WindowSeconds: 60},
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}
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}
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