added test files

internal/config/config_test.go

@@ -0,0 +1,91 @@
+package config
+
+import (
+	"os"
+	"testing"
+)
+
+var configEnvKeys = []string{
+	"API_PORT",
+	"API_READ_TIMEOUT",
+	"API_WRITE_TIMEOUT",
+	"API_IDLE_TIMEOUT",
+	"API_TIMEOUT",
+	"API_API_PORT",
+	"API_API_READ_TIMEOUT",
+	"API_API_WRITE_TIMEOUT",
+	"API_API_IDLE_TIMEOUT",
+	"API_API_TIMEOUT",
+}
+
+func clearConfigEnv(t *testing.T) {
+	t.Helper()
+	for _, key := range configEnvKeys {
+		key := key
+		if prev, ok := os.LookupEnv(key); ok {
+			prev := prev
+			t.Cleanup(func() {
+				_ = os.Setenv(key, prev)
+			})
+		} else {
+			t.Cleanup(func() {
+				_ = os.Unsetenv(key)
+			})
+		}
+		_ = os.Unsetenv(key)
+	}
+}
+
+func TestNewConfig_Defaults(t *testing.T) {
+	clearConfigEnv(t)
+
+	cfg, err := NewConfig()
+	if err != nil {
+		t.Fatalf("NewConfig() error = %v", err)
+	}
+
+	if cfg.API.Port != 3000 {
+		t.Errorf("API.Port = %d, want 3000", cfg.API.Port)
+	}
+	if cfg.API.ReadTimeout != 7 {
+		t.Errorf("API.ReadTimeout = %d, want 7", cfg.API.ReadTimeout)
+	}
+	if cfg.API.WriteTimeout != 5 {
+		t.Errorf("API.WriteTimeout = %d, want 5", cfg.API.WriteTimeout)
+	}
+	if cfg.API.IdleTimeout != 5 {
+		t.Errorf("API.IdleTimeout = %d, want 5", cfg.API.IdleTimeout)
+	}
+	if cfg.API.Timeout != 5 {
+		t.Errorf("API.Timeout = %d, want 5", cfg.API.Timeout)
+	}
+}
+
+func TestNewConfig_FromEnv(t *testing.T) {
+	t.Setenv("API_PORT", "9090")
+	t.Setenv("API_READ_TIMEOUT", "10")
+	t.Setenv("API_WRITE_TIMEOUT", "11")
+	t.Setenv("API_IDLE_TIMEOUT", "12")
+	t.Setenv("API_TIMEOUT", "13")
+
+	cfg, err := NewConfig()
+	if err != nil {
+		t.Fatalf("NewConfig() error = %v", err)
+	}
+
+	if cfg.API.Port != 9090 {
+		t.Errorf("API.Port = %d, want 9090", cfg.API.Port)
+	}
+	if cfg.API.ReadTimeout != 10 {
+		t.Errorf("API.ReadTimeout = %d, want 10", cfg.API.ReadTimeout)
+	}
+	if cfg.API.WriteTimeout != 11 {
+		t.Errorf("API.WriteTimeout = %d, want 11", cfg.API.WriteTimeout)
+	}
+	if cfg.API.IdleTimeout != 12 {
+		t.Errorf("API.IdleTimeout = %d, want 12", cfg.API.IdleTimeout)
+	}
+	if cfg.API.Timeout != 13 {
+		t.Errorf("API.Timeout = %d, want 13", cfg.API.Timeout)
+	}
+}

internal/infrastructure/os/signal_test.go

@@ -0,0 +1,38 @@
+package os
+
+import (
+	"context"
+	"os"
+	"syscall"
+	"testing"
+	"time"
+
+	"go.uber.org/zap"
+)
+
+func TestSignalListener_CancelsOnSIGTERM(t *testing.T) {
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	canceled := make(chan struct{})
+	go func() {
+		<-ctx.Done()
+		close(canceled)
+	}()
+
+	SignalListener(zap.NewNop(), cancel)
+
+	proc, err := os.FindProcess(os.Getpid())
+	if err != nil {
+		t.Fatalf("FindProcess: %v", err)
+	}
+	if err := proc.Signal(syscall.SIGTERM); err != nil {
+		t.Fatalf("Signal SIGTERM: %v", err)
+	}
+
+	select {
+	case <-canceled:
+	case <-time.After(2 * time.Second):
+		t.Fatal("context was not canceled after SIGTERM")
+	}
+}