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package vt10x
import (
"io"
"strings"
"testing"
)
func extractStr(term Terminal, x0, x1, row int) string {
var s []rune
for i := x0; i <= x1; i++ {
attr := term.Cell(i, row)
s = append(s, attr.Char)
}
return string(s)
}
func TestPlainChars(t *testing.T) {
term := New()
expected := "Hello world!"
_, err := term.Write([]byte(expected))
if err != nil && err != io.EOF {
t.Fatal(err)
}
actual := extractStr(term, 0, len(expected)-1, 0)
if expected != actual {
t.Fatal(actual)
}
}
func TestNewline(t *testing.T) {
term := New()
expected := "Hello world!\n...and more."
_, err := term.Write([]byte("\033[20h")) // set CRLF mode
if err != nil && err != io.EOF {
t.Fatal(err)
}
_, err = term.Write([]byte(expected))
if err != nil && err != io.EOF {
t.Fatal(err)
}
split := strings.Split(expected, "\n")
actual := extractStr(term, 0, len(split[0])-1, 0)
actual += "\n"
actual += extractStr(term, 0, len(split[1])-1, 1)
if expected != actual {
t.Fatal(actual)
}
// A newline with a color set should not make the next line that color,
// which used to happen if it caused a scroll event.
st := (term.(*terminal))
st.moveTo(0, st.rows-1)
_, err = term.Write([]byte("\033[1;37m\n$ \033[m"))
if err != nil && err != io.EOF {
t.Fatal(err)
}
cur := term.Cursor()
attr := term.Cell(cur.X, cur.Y)
if attr.FG != DefaultFG {
t.Fatal(st.cur.X, st.cur.Y, attr.FG, attr.BG)
}
}
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