test: 补齐 handler/repository/domain 层单元测试

internal/repository/pagination_test.go

@@ -0,0 +1,95 @@
+package repository
+
+import (
+	"testing"
+
+	"github.com/user-management-system/internal/pkg/pagination"
+)
+
+func TestPaginationResultFromTotal(t *testing.T) {
+	tests := []struct {
+		name        string
+		total       int64
+		params      pagination.PaginationParams
+		wantPages   int
+		wantTotal   int64
+		wantPage    int
+		wantPageSize int
+	}{
+		{
+			name:         "exact division",
+			total:        100,
+			params:       pagination.PaginationParams{Page: 1, PageSize: 20},
+			wantPages:    5,
+			wantTotal:    100,
+			wantPage:     1,
+			wantPageSize: 20,
+		},
+		{
+			name:         "with remainder",
+			total:        105,
+			params:       pagination.PaginationParams{Page: 1, PageSize: 20},
+			wantPages:    6,
+			wantTotal:    105,
+			wantPage:     1,
+			wantPageSize: 20,
+		},
+		{
+			name:         "zero total",
+			total:        0,
+			params:       pagination.PaginationParams{Page: 1, PageSize: 20},
+			wantPages:    0,
+			wantTotal:    0,
+			wantPage:     1,
+			wantPageSize: 20,
+		},
+		{
+			name:         "single page",
+			total:        5,
+			params:       pagination.PaginationParams{Page: 1, PageSize: 20},
+			wantPages:    1,
+			wantTotal:    5,
+			wantPage:     1,
+			wantPageSize: 20,
+		},
+		{
+			name:         "page 2",
+			total:        50,
+			params:       pagination.PaginationParams{Page: 2, PageSize: 20},
+			wantPages:    3,
+			wantTotal:    50,
+			wantPage:     2,
+			wantPageSize: 20,
+		},
+		{
+			name:         "small page size",
+			total:        10,
+			params:       pagination.PaginationParams{Page: 1, PageSize: 3},
+			wantPages:    4,
+			wantTotal:    10,
+			wantPage:     1,
+			wantPageSize: 3,
+		},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			result := paginationResultFromTotal(tc.total, tc.params)
+			if result == nil {
+				t.Fatal("expected non-nil result")
+			}
+			if result.Total != tc.wantTotal {
+				t.Errorf("expected total %d, got %d", tc.wantTotal, result.Total)
+			}
+			if result.Page != tc.wantPage {
+				t.Errorf("expected page %d, got %d", tc.wantPage, result.Page)
+			}
+			if result.PageSize != tc.wantPageSize {
+				t.Errorf("expected page_size %d, got %d", tc.wantPageSize, result.PageSize)
+			}
+			if result.Pages != tc.wantPages {
+				t.Errorf("expected pages %d, got %d", tc.wantPages, result.Pages)
+			}
+		})
+	}
+}