userfront&backend test coverage 추가

backend/internal/domain/shared_link_test.go

@@ -0,0 +1,80 @@
+package domain
+
+import (
+	"encoding/hex"
+	"testing"
+	"time"
+)
+
+func TestSharedLinkBeforeCreate(t *testing.T) {
+	t.Run("generates id and token when missing", func(t *testing.T) {
+		link := SharedLink{}
+
+		if err := link.BeforeCreate(nil); err != nil {
+			t.Fatalf("unexpected error: %v", err)
+		}
+		if link.ID == "" {
+			t.Fatalf("expected generated id")
+		}
+		if len(link.Token) != 64 {
+			t.Fatalf("expected 64-character token, got %q", link.Token)
+		}
+		if _, err := hex.DecodeString(link.Token); err != nil {
+			t.Fatalf("expected hex token: %v", err)
+		}
+	})
+
+	t.Run("preserves existing id and token", func(t *testing.T) {
+		link := SharedLink{
+			ID:    "existing-id",
+			Token: "existing-token",
+		}
+
+		if err := link.BeforeCreate(nil); err != nil {
+			t.Fatalf("unexpected error: %v", err)
+		}
+		if link.ID != "existing-id" || link.Token != "existing-token" {
+			t.Fatalf("expected existing fields to be preserved: %#v", link)
+		}
+	})
+}
+
+func TestSharedLinkIsValid(t *testing.T) {
+	future := time.Now().Add(time.Hour)
+	past := time.Now().Add(-time.Hour)
+
+	tests := []struct {
+		name     string
+		link     SharedLink
+		expected bool
+	}{
+		{
+			name:     "active link without expiration is valid",
+			link:     SharedLink{IsActive: true},
+			expected: true,
+		},
+		{
+			name:     "active link with future expiration is valid",
+			link:     SharedLink{IsActive: true, ExpiresAt: &future},
+			expected: true,
+		},
+		{
+			name:     "inactive link is invalid",
+			link:     SharedLink{IsActive: false, ExpiresAt: &future},
+			expected: false,
+		},
+		{
+			name:     "expired link is invalid",
+			link:     SharedLink{IsActive: true, ExpiresAt: &past},
+			expected: false,
+		},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			if got := tc.link.IsValid(); got != tc.expected {
+				t.Fatalf("unexpected validity: got=%v expected=%v", got, tc.expected)
+			}
+		})
+	}
+}