313 lines
8.9 KiB
Go
313 lines
8.9 KiB
Go
// Copyright 2022 The Gitea Authors.
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// Copyright 2015 https://github.com/unknwon. Licensed under the Apache License, Version 2.0
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// SPDX-License-Identifier: Apache-2.0
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package paginator
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import (
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"testing"
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"github.com/stretchr/testify/assert"
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)
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func TestPaginator(t *testing.T) {
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t.Run("Basic logics", func(t *testing.T) {
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p := New(0, -1, -1, 0)
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assert.Equal(t, 1, p.PagingNum())
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assert.True(t, p.IsFirst())
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assert.False(t, p.HasPrevious())
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assert.Equal(t, 1, p.Previous())
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assert.False(t, p.HasNext())
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assert.Equal(t, 1, p.Next())
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assert.True(t, p.IsLast())
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assert.Equal(t, 0, p.Total())
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p = New(1, 10, 2, 0)
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assert.Equal(t, 10, p.PagingNum())
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assert.True(t, p.IsFirst())
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assert.False(t, p.HasPrevious())
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assert.False(t, p.HasNext())
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assert.True(t, p.IsLast())
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p = New(10, 10, 1, 0)
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assert.Equal(t, 10, p.PagingNum())
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assert.True(t, p.IsFirst())
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assert.False(t, p.HasPrevious())
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assert.False(t, p.HasNext())
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assert.True(t, p.IsLast())
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p = New(11, 10, 1, 0)
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assert.Equal(t, 10, p.PagingNum())
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assert.True(t, p.IsFirst())
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assert.False(t, p.HasPrevious())
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assert.True(t, p.HasNext())
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assert.Equal(t, 2, p.Next())
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assert.False(t, p.IsLast())
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p = New(11, 10, 2, 0)
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assert.Equal(t, 10, p.PagingNum())
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assert.False(t, p.IsFirst())
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assert.True(t, p.HasPrevious())
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assert.Equal(t, 1, p.Previous())
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assert.False(t, p.HasNext())
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assert.True(t, p.IsLast())
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p = New(20, 10, 2, 0)
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assert.Equal(t, 10, p.PagingNum())
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assert.False(t, p.IsFirst())
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assert.True(t, p.HasPrevious())
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assert.False(t, p.HasNext())
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assert.True(t, p.IsLast())
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p = New(25, 10, 2, 0)
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assert.Equal(t, 10, p.PagingNum())
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assert.False(t, p.IsFirst())
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assert.True(t, p.HasPrevious())
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assert.True(t, p.HasNext())
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assert.False(t, p.IsLast())
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})
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t.Run("Generate pages", func(t *testing.T) {
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p := New(0, 10, 1, 0)
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pages := p.Pages()
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assert.Empty(t, pages)
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})
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t.Run("Only current page", func(t *testing.T) {
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p := New(0, 10, 1, 1)
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pages := p.Pages()
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assert.Len(t, pages, 1)
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assert.Equal(t, 1, pages[0].Num())
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assert.True(t, pages[0].IsCurrent())
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p = New(1, 10, 1, 1)
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pages = p.Pages()
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assert.Len(t, pages, 1)
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assert.Equal(t, 1, pages[0].Num())
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assert.True(t, pages[0].IsCurrent())
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})
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t.Run("Total page number is less or equal", func(t *testing.T) {
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p := New(1, 10, 1, 2)
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pages := p.Pages()
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assert.Len(t, pages, 1)
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assert.Equal(t, 1, pages[0].Num())
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assert.True(t, pages[0].IsCurrent())
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p = New(11, 10, 1, 2)
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pages = p.Pages()
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assert.Len(t, pages, 2)
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assert.Equal(t, 1, pages[0].Num())
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assert.True(t, pages[0].IsCurrent())
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assert.Equal(t, 2, pages[1].Num())
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assert.False(t, pages[1].IsCurrent())
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p = New(11, 10, 2, 2)
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pages = p.Pages()
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assert.Len(t, pages, 2)
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assert.Equal(t, 1, pages[0].Num())
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assert.False(t, pages[0].IsCurrent())
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assert.Equal(t, 2, pages[1].Num())
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assert.True(t, pages[1].IsCurrent())
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p = New(25, 10, 2, 3)
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pages = p.Pages()
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assert.Len(t, pages, 3)
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assert.Equal(t, 1, pages[0].Num())
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assert.False(t, pages[0].IsCurrent())
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assert.Equal(t, 2, pages[1].Num())
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assert.True(t, pages[1].IsCurrent())
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assert.Equal(t, 3, pages[2].Num())
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assert.False(t, pages[2].IsCurrent())
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})
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t.Run("Has more previous pages ", func(t *testing.T) {
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// ... 2
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p := New(11, 10, 2, 1)
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pages := p.Pages()
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assert.Len(t, pages, 2)
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assert.Equal(t, -1, pages[0].Num())
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assert.False(t, pages[0].IsCurrent())
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assert.Equal(t, 2, pages[1].Num())
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assert.True(t, pages[1].IsCurrent())
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// ... 2 3
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p = New(21, 10, 2, 2)
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pages = p.Pages()
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assert.Len(t, pages, 3)
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assert.Equal(t, -1, pages[0].Num())
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assert.False(t, pages[0].IsCurrent())
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assert.Equal(t, 2, pages[1].Num())
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assert.True(t, pages[1].IsCurrent())
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assert.Equal(t, 3, pages[2].Num())
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assert.False(t, pages[2].IsCurrent())
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// ... 2 3 4
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p = New(31, 10, 3, 3)
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pages = p.Pages()
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assert.Len(t, pages, 4)
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assert.Equal(t, -1, pages[0].Num())
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assert.False(t, pages[0].IsCurrent())
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assert.Equal(t, 2, pages[1].Num())
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assert.False(t, pages[1].IsCurrent())
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assert.Equal(t, 3, pages[2].Num())
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assert.True(t, pages[2].IsCurrent())
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assert.Equal(t, 4, pages[3].Num())
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assert.False(t, pages[3].IsCurrent())
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// ... 3 4 5
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p = New(41, 10, 4, 3)
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pages = p.Pages()
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assert.Len(t, pages, 4)
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assert.Equal(t, -1, pages[0].Num())
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assert.False(t, pages[0].IsCurrent())
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assert.Equal(t, 3, pages[1].Num())
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assert.False(t, pages[1].IsCurrent())
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assert.Equal(t, 4, pages[2].Num())
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assert.True(t, pages[2].IsCurrent())
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assert.Equal(t, 5, pages[3].Num())
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assert.False(t, pages[3].IsCurrent())
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// ... 4 5 6 7 8 9 10
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p = New(100, 10, 9, 7)
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pages = p.Pages()
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assert.Len(t, pages, 8)
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assert.Equal(t, -1, pages[0].Num())
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assert.False(t, pages[0].IsCurrent())
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assert.Equal(t, 4, pages[1].Num())
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assert.False(t, pages[1].IsCurrent())
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assert.Equal(t, 5, pages[2].Num())
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assert.False(t, pages[2].IsCurrent())
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assert.Equal(t, 6, pages[3].Num())
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assert.False(t, pages[3].IsCurrent())
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assert.Equal(t, 7, pages[4].Num())
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assert.False(t, pages[4].IsCurrent())
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assert.Equal(t, 8, pages[5].Num())
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assert.False(t, pages[5].IsCurrent())
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assert.Equal(t, 9, pages[6].Num())
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assert.True(t, pages[6].IsCurrent())
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assert.Equal(t, 10, pages[7].Num())
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assert.False(t, pages[7].IsCurrent())
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})
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t.Run("Has more next pages", func(t *testing.T) {
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// 1 ...
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p := New(21, 10, 1, 1)
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pages := p.Pages()
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assert.Len(t, pages, 2)
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assert.Equal(t, 1, pages[0].Num())
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assert.True(t, pages[0].IsCurrent())
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assert.Equal(t, -1, pages[1].Num())
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assert.False(t, pages[1].IsCurrent())
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// 1 2 ...
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p = New(21, 10, 1, 2)
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pages = p.Pages()
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assert.Len(t, pages, 3)
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assert.Equal(t, 1, pages[0].Num())
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assert.True(t, pages[0].IsCurrent())
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assert.Equal(t, 2, pages[1].Num())
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assert.False(t, pages[1].IsCurrent())
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assert.Equal(t, -1, pages[2].Num())
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assert.False(t, pages[2].IsCurrent())
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// 1 2 3 ...
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p = New(31, 10, 2, 3)
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pages = p.Pages()
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assert.Len(t, pages, 4)
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assert.Equal(t, 1, pages[0].Num())
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assert.False(t, pages[0].IsCurrent())
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assert.Equal(t, 2, pages[1].Num())
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assert.True(t, pages[1].IsCurrent())
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assert.Equal(t, 3, pages[2].Num())
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assert.False(t, pages[2].IsCurrent())
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assert.Equal(t, -1, pages[3].Num())
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assert.False(t, pages[3].IsCurrent())
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// 1 2 3 ...
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p = New(41, 10, 2, 3)
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pages = p.Pages()
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assert.Len(t, pages, 4)
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assert.Equal(t, 1, pages[0].Num())
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assert.False(t, pages[0].IsCurrent())
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assert.Equal(t, 2, pages[1].Num())
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assert.True(t, pages[1].IsCurrent())
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assert.Equal(t, 3, pages[2].Num())
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assert.False(t, pages[2].IsCurrent())
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assert.Equal(t, -1, pages[3].Num())
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assert.False(t, pages[3].IsCurrent())
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// 1 2 3 4 5 6 7 ...
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p = New(100, 10, 1, 7)
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pages = p.Pages()
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assert.Len(t, pages, 8)
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assert.Equal(t, 1, pages[0].Num())
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assert.True(t, pages[0].IsCurrent())
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assert.Equal(t, 2, pages[1].Num())
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assert.False(t, pages[1].IsCurrent())
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assert.Equal(t, 3, pages[2].Num())
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assert.False(t, pages[2].IsCurrent())
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assert.Equal(t, 4, pages[3].Num())
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assert.False(t, pages[3].IsCurrent())
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assert.Equal(t, 5, pages[4].Num())
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assert.False(t, pages[4].IsCurrent())
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assert.Equal(t, 6, pages[5].Num())
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assert.False(t, pages[5].IsCurrent())
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assert.Equal(t, 7, pages[6].Num())
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assert.False(t, pages[6].IsCurrent())
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assert.Equal(t, -1, pages[7].Num())
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assert.False(t, pages[7].IsCurrent())
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// 1 2 3 4 5 6 7 ...
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p = New(100, 10, 2, 7)
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pages = p.Pages()
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assert.Len(t, pages, 8)
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assert.Equal(t, 1, pages[0].Num())
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assert.False(t, pages[0].IsCurrent())
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assert.Equal(t, 2, pages[1].Num())
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assert.True(t, pages[1].IsCurrent())
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assert.Equal(t, 3, pages[2].Num())
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assert.False(t, pages[2].IsCurrent())
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assert.Equal(t, 4, pages[3].Num())
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assert.False(t, pages[3].IsCurrent())
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assert.Equal(t, 5, pages[4].Num())
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assert.False(t, pages[4].IsCurrent())
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assert.Equal(t, 6, pages[5].Num())
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assert.False(t, pages[5].IsCurrent())
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assert.Equal(t, 7, pages[6].Num())
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assert.False(t, pages[6].IsCurrent())
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assert.Equal(t, -1, pages[7].Num())
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assert.False(t, pages[7].IsCurrent())
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})
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t.Run("Has both more previous and next pages", func(t *testing.T) {
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// ... 2 3 ...
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p := New(35, 10, 2, 2)
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pages := p.Pages()
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assert.Len(t, pages, 4)
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assert.Equal(t, -1, pages[0].Num())
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assert.False(t, pages[0].IsCurrent())
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assert.Equal(t, 2, pages[1].Num())
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assert.True(t, pages[1].IsCurrent())
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assert.Equal(t, 3, pages[2].Num())
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assert.False(t, pages[2].IsCurrent())
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assert.Equal(t, -1, pages[3].Num())
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assert.False(t, pages[3].IsCurrent())
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// ... 2 3 4 ...
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p = New(49, 10, 3, 3)
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pages = p.Pages()
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assert.Len(t, pages, 5)
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assert.Equal(t, -1, pages[0].Num())
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assert.False(t, pages[0].IsCurrent())
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assert.Equal(t, 2, pages[1].Num())
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assert.False(t, pages[1].IsCurrent())
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assert.Equal(t, 3, pages[2].Num())
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assert.True(t, pages[2].IsCurrent())
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assert.Equal(t, 4, pages[3].Num())
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assert.False(t, pages[3].IsCurrent())
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assert.Equal(t, -1, pages[4].Num())
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assert.False(t, pages[4].IsCurrent())
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})
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}
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