[🤖] Add Unit-Tests

pagination/pagination_test.go

@@ -0,0 +1,82 @@
+package pagination
+
+import "testing"
+
+func TestCalcPaginationTotalPagesZeroItems(t *testing.T) {
+	if got := CalcPaginationTotalPages(0, 10); got != 0 {
+		t.Errorf("expected 0, got %d", got)
+	}
+}
+
+func TestCalcPaginationTotalPagesZeroLimit(t *testing.T) {
+	if got := CalcPaginationTotalPages(100, 0); got != 0 {
+		t.Errorf("expected 0, got %d", got)
+	}
+}
+
+func TestCalcPaginationTotalPagesZeroBoth(t *testing.T) {
+	if got := CalcPaginationTotalPages(0, 0); got != 0 {
+		t.Errorf("expected 0, got %d", got)
+	}
+}
+
+func TestCalcPaginationTotalPagesExactMultiple(t *testing.T) {
+	if got := CalcPaginationTotalPages(100, 10); got != 10 {
+		t.Errorf("expected 10, got %d", got)
+	}
+}
+
+func TestCalcPaginationTotalPagesPartialLastPage(t *testing.T) {
+	if got := CalcPaginationTotalPages(101, 10); got != 11 {
+		t.Errorf("expected 11, got %d", got)
+	}
+}
+
+func TestCalcPaginationTotalPagesSingleItem(t *testing.T) {
+	if got := CalcPaginationTotalPages(1, 10); got != 1 {
+		t.Errorf("expected 1, got %d", got)
+	}
+}
+
+func TestCalcPaginationTotalPagesItemsLessThanLimit(t *testing.T) {
+	if got := CalcPaginationTotalPages(5, 10); got != 1 {
+		t.Errorf("expected 1, got %d", got)
+	}
+}
+
+func TestCalcPaginationTotalPagesLimitOfOne(t *testing.T) {
+	if got := CalcPaginationTotalPages(7, 1); got != 7 {
+		t.Errorf("expected 7, got %d", got)
+	}
+}
+
+func TestCalcPaginationTotalPagesItemsEqualLimit(t *testing.T) {
+	if got := CalcPaginationTotalPages(10, 10); got != 1 {
+		t.Errorf("expected 1, got %d", got)
+	}
+}
+
+func TestCalcPaginationTotalPagesLargeNumbers(t *testing.T) {
+	if got := CalcPaginationTotalPages(1_000_000, 250); got != 4000 {
+		t.Errorf("expected 4000, got %d", got)
+	}
+}
+
+func TestCalcPaginationTotalPagesOneMoreThanMultiple(t *testing.T) {
+	if got := CalcPaginationTotalPages(11, 5); got != 3 {
+		t.Errorf("expected 3, got %d", got)
+	}
+}
+
+func TestPaginationStructFields(t *testing.T) {
+	p := Pagination{
+		Page:             2,
+		Limit:            25,
+		TotalPages:       4,
+		TotalItems:       100,
+		CurrentPageCount: 25,
+	}
+	if p.Page != 2 || p.Limit != 25 || p.TotalPages != 4 || p.TotalItems != 100 || p.CurrentPageCount != 25 {
+		t.Errorf("unexpected pagination struct values: %+v", p)
+	}
+}