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// Copyright 2019-2022 Graham Clark. All rights reserved. Use of this source code is governed by the MIT license
// that can be found in the LICENSE file.
package vscroll
import (
"strings"
"testing"
"github.com/gcla/gowid"
"github.com/gcla/gowid/gwtest"
"github.com/gcla/gowid/gwutil"
"github.com/stretchr/testify/assert"
)
//======================================================================
func TestVerticalSplits(t *testing.T) {
x, y, z := 1, 1, 1
splits := gwutil.HamiltonAllocation([]int{x, y, z}, 3)
assert.Equal(t, []int{1, 1, 1}, splits)
x, y, z = 5, 5, 5
splits = gwutil.HamiltonAllocation([]int{x, y, z}, 3)
assert.Equal(t, []int{1, 1, 1}, splits)
x, y, z = 5, 5, 5
splits = gwutil.HamiltonAllocation([]int{x, y, z}, 6)
assert.Equal(t, []int{2, 2, 2}, splits)
x, y, z = 2, 4, 6
splits = gwutil.HamiltonAllocation([]int{x, y, z}, 6)
assert.Equal(t, []int{1, 2, 3}, splits)
x, y, z = 0, 3, 6
splits = gwutil.HamiltonAllocation([]int{x, y, z}, 6)
assert.Equal(t, []int{0, 2, 4}, splits)
x, y, z = 1, 3, 8
splits = gwutil.HamiltonAllocation([]int{x, y, z}, 6)
assert.Equal(t, []int{1, 1, 4}, splits)
x, y, z = 1, 3, 16
splits = gwutil.HamiltonAllocation([]int{x, y, z}, 6)
assert.Equal(t, []int{0, 1, 5}, splits)
x, y, z = 1, 3, 16
splits = gwutil.HamiltonAllocation([]int{x, y, z}, 0)
assert.Equal(t, []int{0, 0, 0}, splits)
x, y, z = 18, 14, 643
splits = gwutil.HamiltonAllocation([]int{x, y, z}, 12)
assert.Equal(t, []int{0, 0, 12}, splits)
}
func TestVerticalScrollbar(t *testing.T) {
w := New()
c1 := w.Render(gowid.RenderBox{C: 2, R: 5}, gowid.Focused, gwtest.D)
assert.Equal(t, c1.String(), "^^\n \n##\n \nvv")
assert.Panics(t, func() {
w.Render(gowid.RenderFixed{}, gowid.Focused, gwtest.D)
})
}
func TestVerticalScrollbar2(t *testing.T) {
w := New()
c1 := w.Render(gowid.RenderBox{C: 1, R: 5}, gowid.Focused, gwtest.D)
assert.Equal(t, c1.String(), strings.Join([]string{"^", " ", "#", " ", "v"}, "\n"))
w.Top = 0
w.Middle = 1
w.Bottom = 1
c1 = w.Render(gowid.RenderBox{C: 1, R: 5}, gowid.Focused, gwtest.D)
assert.Equal(t, c1.String(), strings.Join([]string{"^", "#", "#", " ", "v"}, "\n"))
// w.Top = 1
// w.Middle = 1
// w.Bottom = 97
// c1 = w.Render(gowid.RenderBox{C: 1, R: 5}, true, gwtest.D)
// assert.Equal(t, c1.String(), strings.Join([]string{"^", "#", "#", " ", "v"}, "\n"))
}
//======================================================================
// Local Variables:
// mode: Go
// fill-column: 110
// End:
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