提取token逻辑, 增加token单测

internal/utils/token/token_test.go

@@ -0,0 +1,94 @@
+package token
+
+import (
+	"testing"
+	"time"
+
+	"github.com/golang-jwt/jwt/v5"
+)
+
+func TestGenerateToken(t *testing.T) {
+	// 使用一个测试密钥初始化 TokenService
+	testSecret := []byte("test_secret_key")
+	service := NewTokenService(testSecret)
+
+	userID := uint(123)
+	tokenString, err := service.GenerateToken(userID)
+
+	if err != nil {
+		t.Fatalf("GenerateToken failed: %v", err)
+	}
+
+	if tokenString == "" {
+		t.Fatal("Generated token string is empty")
+	}
+
+	// 解析 token 以确保其有效性及声明
+	claims, err := service.ParseToken(tokenString)
+	if err != nil {
+		t.Fatalf("ParseToken failed after generation: %v", err)
+	}
+
+	if claims.UserID != userID {
+		t.Errorf("Expected UserID %d, got %d", userID, claims.UserID)
+	}
+
+	// 检查 token 是否未过期 (在合理范围内)
+	if claims.ExpiresAt == nil || claims.ExpiresAt.Time.Before(time.Now().Add(-time.Minute)) {
+		t.Errorf("Token expiration time is invalid or already expired")
+	}
+
+	if claims.Issuer != "pig-farm-controller" {
+		t.Errorf("Expected Issuer \"pig-farm-controller\", got \"%s\"", claims.Issuer)
+	}
+}
+
+func TestParseToken(t *testing.T) {
+	// 使用一个测试密钥初始化 TokenService
+	testSecret := []byte("test_secret_key")
+	service := NewTokenService(testSecret)
+
+	userID := uint(456)
+
+	// 生成一个有效的 token 用于解析测试
+	validToken, err := service.GenerateToken(userID)
+	if err != nil {
+		t.Fatalf("Failed to generate valid token for parsing test: %v", err)
+	}
+
+	// 测试用例 1: 有效 token
+	claims, err := service.ParseToken(validToken)
+	if err != nil {
+		t.Errorf("ParseToken failed for valid token: %v", err)
+	}
+
+	if claims.UserID != userID {
+		t.Errorf("Expected UserID %d, got %d for valid token", userID, claims.UserID)
+	}
+
+	// 测试用例 2: 无效 token (例如, 错误的签名)
+	invalidToken := "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VyX2lkIjoxMjMsImV4cCI6MTY3ODkwNTYwMCwiaXNzIjoicGlnLWZhcm0tY29udHJvbGxlciJ9.invalid_signature_here"
+	_, err = service.ParseToken(invalidToken)
+	if err == nil {
+		t.Error("ParseToken unexpectedly succeeded for invalid token")
+	}
+
+	// 测试用例 3: 过期 token (创建一个过期时间在过去的 token)
+	expiredClaims := Claims{
+		UserID: userID,
+		RegisteredClaims: jwt.RegisteredClaims{
+			ExpiresAt: jwt.NewNumericDate(time.Now().Add(-time.Hour)), // 1 小时前
+			Issuer:    "pig-farm-controller",
+		},
+	}
+	expiredTokenClaims := jwt.NewWithClaims(jwt.SigningMethodHS256, expiredClaims)
+	expiredTokenString, err := expiredTokenClaims.SignedString(testSecret)
+	if err != nil {
+		t.Fatalf("Failed to generate expired token: %v", err)
+	}
+
+	_, err = service.ParseToken(expiredTokenString)
+	if err == nil {
+		t.Error("ParseToken unexpectedly succeeded for expired token")
+	}
+}