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package prompt
import (
"reflect"
"testing"
)
func TestNewBuffer(t *testing.T) {
b := NewBuffer()
if b.workingIndex != 0 {
t.Errorf("workingIndex should be %#v, got %#v", 0, b.workingIndex)
}
if !reflect.DeepEqual(b.workingLines, []string{""}) {
t.Errorf("workingLines should be %#v, got %#v", []string{""}, b.workingLines)
}
}
func TestBuffer_InsertText(t *testing.T) {
b := NewBuffer()
b.InsertText("some_text", false, true)
if b.Text() != "some_text" {
t.Errorf("Text should be %#v, got %#v", "some_text", b.Text())
}
if b.cursorPosition != len("some_text") {
t.Errorf("cursorPosition should be %#v, got %#v", len("some_text"), b.cursorPosition)
}
}
func TestBuffer_CursorMovement(t *testing.T) {
b := NewBuffer()
b.InsertText("some_text", false, true)
b.CursorLeft(1)
b.CursorLeft(2)
b.CursorRight(1)
b.InsertText("A", false, true)
if b.Text() != "some_teAxt" {
t.Errorf("Text should be %#v, got %#v", "some_teAxt", b.Text())
}
if b.cursorPosition != len("some_teA") {
t.Errorf("Text should be %#v, got %#v", len("some_teA"), b.cursorPosition)
}
// Moving over left character counts.
b.CursorLeft(100)
b.InsertText("A", false, true)
if b.Text() != "Asome_teAxt" {
t.Errorf("Text should be %#v, got %#v", "some_teAxt", b.Text())
}
if b.cursorPosition != len("A") {
t.Errorf("Text should be %#v, got %#v", len("some_teA"), b.cursorPosition)
}
// TODO: Going right already at right end.
}
func TestBuffer_CursorMovement_WithMultiByte(t *testing.T) {
b := NewBuffer()
b.InsertText("あいうえお", false, true)
b.CursorLeft(1)
if l := b.Document().TextAfterCursor(); l != "お" {
t.Errorf("Should be 'お', but got %s", l)
}
}
func TestBuffer_CursorUp(t *testing.T) {
b := NewBuffer()
b.InsertText("long line1\nline2", false, true)
b.CursorUp(1)
if b.Document().cursorPosition != 5 {
t.Errorf("Should be %#v, got %#v", 5, b.Document().cursorPosition)
}
// Going up when already at the top.
b.CursorUp(1)
if b.Document().cursorPosition != 5 {
t.Errorf("Should be %#v, got %#v", 5, b.Document().cursorPosition)
}
// Going up to a line that's shorter.
b.setDocument(&Document{})
b.InsertText("line1\nlong line2", false, true)
b.CursorUp(1)
if b.Document().cursorPosition != 5 {
t.Errorf("Should be %#v, got %#v", 5, b.Document().cursorPosition)
}
}
func TestBuffer_CursorDown(t *testing.T) {
b := NewBuffer()
b.InsertText("line1\nline2", false, true)
b.cursorPosition = 3
// Normally going down
b.CursorDown(1)
if b.Document().cursorPosition != len("line1\nlin") {
t.Errorf("Should be %#v, got %#v", len("line1\nlin"), b.Document().cursorPosition)
}
// Going down to a line that's storter.
b = NewBuffer()
b.InsertText("long line1\na\nb", false, true)
b.cursorPosition = 3
b.CursorDown(1)
if b.Document().cursorPosition != len("long line1\na") {
t.Errorf("Should be %#v, got %#v", len("long line1\na"), b.Document().cursorPosition)
}
}
func TestBuffer_DeleteBeforeCursor(t *testing.T) {
b := NewBuffer()
b.InsertText("some_text", false, true)
b.CursorLeft(2)
deleted := b.DeleteBeforeCursor(1)
if b.Text() != "some_txt" {
t.Errorf("Should be %#v, got %#v", "some_txt", b.Text())
}
if deleted != "e" {
t.Errorf("Should be %#v, got %#v", deleted, "e")
}
if b.cursorPosition != len("some_t") {
t.Errorf("Should be %#v, got %#v", len("some_t"), b.cursorPosition)
}
// Delete over the characters length before cursor.
deleted = b.DeleteBeforeCursor(100)
if deleted != "some_t" {
t.Errorf("Should be %#v, got %#v", "some_t", deleted)
}
if b.Text() != "xt" {
t.Errorf("Should be %#v, got %#v", "xt", b.Text())
}
// If cursor position is a beginning of line, it has no effect.
deleted = b.DeleteBeforeCursor(1)
if deleted != "" {
t.Errorf("Should be empty, got %#v", deleted)
}
}
func TestBuffer_NewLine(t *testing.T) {
b := NewBuffer()
b.InsertText(" hello", false, true)
b.NewLine(false)
ac := b.Text()
ex := " hello\n"
if ac != ex {
t.Errorf("Should be %#v, got %#v", ex, ac)
}
b = NewBuffer()
b.InsertText(" hello", false, true)
b.NewLine(true)
ac = b.Text()
ex = " hello\n "
if ac != ex {
t.Errorf("Should be %#v, got %#v", ex, ac)
}
}
func TestBuffer_JoinNextLine(t *testing.T) {
b := NewBuffer()
b.InsertText("line1\nline2\nline3", false, true)
b.CursorUp(1)
b.JoinNextLine(" ")
ac := b.Text()
ex := "line1\nline2 line3"
if ac != ex {
t.Errorf("Should be %#v, got %#v", ex, ac)
}
// Test when there is no '\n' in the text
b = NewBuffer()
b.InsertText("line1", false, true)
b.cursorPosition = 0
b.JoinNextLine(" ")
ac = b.Text()
ex = "line1"
if ac != ex {
t.Errorf("Should be %#v, got %#v", ex, ac)
}
}
func TestBuffer_SwapCharactersBeforeCursor(t *testing.T) {
b := NewBuffer()
b.InsertText("hello world", false, true)
b.CursorLeft(2)
b.SwapCharactersBeforeCursor()
ac := b.Text()
ex := "hello wrold"
if ac != ex {
t.Errorf("Should be %#v, got %#v", ex, ac)
}
}
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