Fixed pager page and pages value when no items present.

pkg/page/pager.go

@@ -34,6 +34,7 @@ type Pager struct {
 func NewPager(ctx echo.Context, itemsPerPage int) Pager {
 	p := Pager{
 		ItemsPerPage: itemsPerPage,
+		Pages:        1,
 		Page:         1,
 	}
 
@@ -53,7 +54,12 @@ func NewPager(ctx echo.Context, itemsPerPage int) Pager {
 // This should be used rather than setting either items or pages directly.
 func (p *Pager) SetItems(items int) {
 	p.Items = items
-	p.Pages = int(math.Ceil(float64(items) / float64(p.ItemsPerPage)))
+
+	if items > 0 {
+		p.Pages = int(math.Ceil(float64(items) / float64(p.ItemsPerPage)))
+	} else {
+		p.Pages = 1
+	}
 
 	if p.Page > p.Pages {
 		p.Page = p.Pages

pkg/page/pager_test.go

@@ -17,7 +17,7 @@ func TestNewPager(t *testing.T) {
 	assert.Equal(t, 10, pgr.ItemsPerPage)
 	assert.Equal(t, 1, pgr.Page)
 	assert.Equal(t, 0, pgr.Items)
-	assert.Equal(t, 0, pgr.Pages)
+	assert.Equal(t, 1, pgr.Pages)
 
 	ctx, _ = tests.NewContext(e, fmt.Sprintf("/abc?%s=%d", PageQueryKey, 2))
 	pgr = NewPager(ctx, 10)
@@ -34,6 +34,11 @@ func TestPager_SetItems(t *testing.T) {
 	pgr.SetItems(100)
 	assert.Equal(t, 100, pgr.Items)
 	assert.Equal(t, 5, pgr.Pages)
+
+	pgr.SetItems(0)
+	assert.Equal(t, 0, pgr.Items)
+	assert.Equal(t, 1, pgr.Pages)
+	assert.Equal(t, 1, pgr.Page)
 }
 
 func TestPager_IsBeginning(t *testing.T) {