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virtual_test.go
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virtual_test.go
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package lcd
import (
"fmt"
"testing"
"github.com/liamg/lcd/virtual"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func Test_Initialisation(t *testing.T) {
tests := []struct {
cols uint8
rows uint8
fontSize FontSize
}{
{
cols: 16,
rows: 2,
fontSize: FontSize5x8,
},
{
cols: 16,
rows: 2,
fontSize: FontSize5x11,
},
{
cols: 16,
rows: 1,
fontSize: FontSize5x8,
},
{
cols: 8,
rows: 1,
fontSize: FontSize5x11,
},
{
cols: 8,
rows: 2,
fontSize: FontSize5x8,
},
{
cols: 16,
rows: 4,
fontSize: FontSize5x8,
},
{
cols: 20,
rows: 2,
fontSize: FontSize5x8,
},
{
cols: 20,
rows: 4,
fontSize: FontSize5x11,
},
}
for _, test := range tests {
t.Run(fmt.Sprintf("4-bit %dx%d %s", test.cols, test.rows, test.fontSize), func(t *testing.T) {
device := virtual.New(test.fontSize.Width(), test.fontSize.Height(), test.cols, test.rows)
dataBus := device.DataPins()
_, err := New(
test.cols,
test.rows,
test.fontSize,
device.RegisterSelectPin(),
device.EnablePin(),
nil,
dataBus[4],
dataBus[5],
dataBus[6],
dataBus[7],
)
require.NoError(t, err)
assert.True(t, device.IsInitialised())
assert.Equal(t, uint8(4), device.BusSize())
w, h := device.FontSize()
assert.Equal(t, test.fontSize.Width(), w)
assert.Equal(t, test.fontSize.Height(), h)
if test.rows > 1 {
assert.Equal(t, uint8(2), device.MemoryLines())
} else {
assert.Equal(t, uint8(1), device.MemoryLines())
}
})
t.Run(fmt.Sprintf("8-bit %dx%d %s", test.cols, test.rows, test.fontSize), func(t *testing.T) {
device := virtual.New(test.fontSize.Width(), test.fontSize.Height(), test.cols, test.rows)
dataBus := device.DataPins()
_, err := New(
test.cols,
test.rows,
test.fontSize,
device.RegisterSelectPin(),
device.EnablePin(),
nil,
dataBus[0],
dataBus[1],
dataBus[2],
dataBus[3],
dataBus[4],
dataBus[5],
dataBus[6],
dataBus[7],
)
require.NoError(t, err)
assert.True(t, device.IsInitialised())
assert.Equal(t, uint8(8), device.BusSize())
w, h := device.FontSize()
assert.Equal(t, test.fontSize.Width(), w)
assert.Equal(t, test.fontSize.Height(), h)
if test.rows > 1 {
assert.Equal(t, uint8(2), device.MemoryLines())
} else {
assert.Equal(t, uint8(1), device.MemoryLines())
}
})
}
}
func Test_BasicWrite(t *testing.T) {
device := virtual.New(5, 8, 16, 2)
dataBus := device.DataPins()
lcd1602, err := New(
16,
2,
FontSize5x8,
device.RegisterSelectPin(),
device.EnablePin(),
nil,
dataBus[0],
dataBus[1],
dataBus[2],
dataBus[3],
dataBus[4],
dataBus[5],
dataBus[6],
dataBus[7],
)
require.NoError(t, err)
lcd1602.WriteLine(0, "Hello...")
lcd1602.WriteLine(1, " ...world!")
assert.Equal(t, `Hello...
...world!`, device.String())
}
func Test_WriteWithRWPin(t *testing.T) {
device := virtual.New(5, 8, 16, 2)
dataBus := device.DataPins()
lcd1602, err := New(
16,
2,
FontSize5x8,
device.RegisterSelectPin(),
device.EnablePin(),
device.ReadWritePin(),
dataBus[0],
dataBus[1],
dataBus[2],
dataBus[3],
dataBus[4],
dataBus[5],
dataBus[6],
dataBus[7],
)
require.NoError(t, err)
lcd1602.WriteLine(0, "Hello...")
lcd1602.WriteLine(1, " ...world!")
assert.Equal(t, `Hello...
...world!`, device.String())
}